George Feher
Group Abstracts: 1980-current
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Updated: June 20, 2003

56. Molecular weight determination of photosynthetic reaction centers subunits from Rhodopseudomonas sphaeroides using amino acid composition; D. Rosen, G. Feher and L. Steiner; Fed. Proc.39, #6, 1801 (1980) (Abstr. # 1029). (The 24th Annual Meeting of the Biophysical Society, New Orleans, La., June 1-5, 1980).

57. Investigation of the ferroquinone complex in reaction centers of Rhodopseudomonas sphaeroides R-26 by EXAFS; P. M. Eisenberger, M. Y. Okamura and G. Feher; Fed. Proc. 39, #6, 1802 (1980) (Abstr. # 1036). (The 24th Annual Meeting of the Biophysical Society, New Orleans, La., June 1-5, 1980).

58. ENDOR of reduced ubisemiquinone in iron-free reaction centers from Rhodopseudomonas sphaeroides; M. Y. Okamura, R. J. Debus, R. A. Isaacson and G. Feher; Fed. Proc.39, #6, 1802 (1980) (Abstr. # 1037). (The 24th Annual Meeting of the Biophysical Society, New Orleans, La., June 1-5, 1980).

59. Functional reconstitution of photosynthetic reaction centers in planar lipid bilayers; M. Schonfeld, M. Montal and G. Feher; Fed. Proc. 39, #6, 1813 (1980) (Abstr. # 1085). (The 24th Annual Meeting of the Biophysical Society, New Orleans, La., June 1-5, 1980).

60. Nitrogen ENDOR spectra of single crystals of aquometmyoglobin; C. P. Scholes, R. A. Isaacson, G. Feher, T. Inubushi and A. Lapidot; Fed. Proc. 39, #6, 3087 (1980) (Abstr. # 1085). (The 24th Annual Meeting of the Biophysical Society, New Orleans, La., June 1-5, 1980).

61. Characterization of reaction centers (RCs) from Rhodopseudomonas sphaeroides R-26 and their functional reconstitution into planar lipid bilayers; G. Feher, M. Schonfeld and M. Montal; Abstracts of the First European Bioenergetics Conference, Urbino, Italy, June 29-July 5, 1980, pp. 419-420.

62. EPR and ENDOR of the primary reactants in bacterial photosynthesis; G. Feher; Proceedings of the 9th International Conference on Magnetic Resonance in Biological Systems, Bendor, France, September 1-6, 1980.

63. The molecular organization of the bacterial photosynthetic membrane and its reaction centers; G. Feher; Proceedings of the 5th International Photosynthesis Congress, held in Kallithea-Kassandra, Halkidiki, Greece, September 7-13, 1980.

64. Localization of reaction center protein in spheroplasts from Rhodopseudomonas sphaeroides by ferritin labeling; G. Valkirs and G. Feher; Biophys. J. (Abstracts) 33, 18a, 1981 (Abstr. #M-AM-E3). (The 25th Annual Meeting of the Biophysical Society, Denver, Colorado, February 23-25, 1981).

65. Dissociation and reconstitution of the H subunit from RCs of Rhodopseudomonas sphaeroides; R. J. Debus, M. Y. Okamura and G. Feher; Biophys. J. (Abstracts) 33, 19a, 1981 (Abstr. #M-AM-E4). (The 25th Annual Meeting of the Biophysical Society, Denver, Colorado, February 23-25, 1981).

66. N-terminal sequence of the H subunit of the photosynthetic reaction center protein of Rhodopseudomonas sphaeroides R-26; M. R. Sutton, L. A. Steiner, E. C. Abresch and G. Feher; Biophys. J. (Abstracts) 33, 19a, 1981 (Abstr. #M-AM-E5). (The 25th Annual Meeting of the Biophysical Society, Denver, Colorado, February 23-25, 1981).

67. Mossbauer studies of reaction centers from Rhodopseudomonas sphaeroides; B. Boso, P. G. Debrunner, M. Y. Okamura and G. Feher; Biophys. J. (Abstracts) 33, 263a, 1981 (Abstr. #T-PM-Po104). (The 25th Annual Meeting of the Biophysical Society, Denver, Colorado, February 23-25, 1981).

68. Functional reconstitution of photosynthetic reaction centers into planar lipid bilayers; G. Feher, M. Schonfeld and M. Montal; Proceedings of the VII International Biophysics Congress, held in Mexico City, August 23-29, 1981.

69. The charge recombination pathway of the transition D+QIQII- to DQIQII in RCs from Rhodopseudomonas sphaeroides; D. Kleinfeld, M. Y. Okamura and G. Feher; Biophys. J. (Abstracts) 37, 110a (1982) (Abstr. #M-PM-E5). (The 26th Annual Meeting of the Biophysical Society, Boston, Ma., February 14-17, 1982).

70. The redox free energy difference between the primary and secondary electron acceptors in RCs from Rhodopseudomonas sphaeroides; D. Kleinfeld, M. Y. Okamura and G. Feher; Biophys. J. (Abstracts) 37, 110a (1982) (Abstr. #M-PM-E6). (The 26th Annual Meeting of the Biophysical Society, Boston, MA, February 14-17, 1982).

71. Spin-lattice relaxation time of the reduced primary quinone in RCs from Rhodopseudomonas sphaeroides: Determination of zero-field splitting of Fe2+; R. Calvo, W. F. Butler, R. A. Isaacson, M. Y. Okamura, D. R. Fredkin and G. Feher; Biophys. J. (Abstracts) 37, 111a (1982) (Abstr. #M-PM-E7). (The 26th Annual Meeting of the Biophysical Society, Boston, MA, February 14-17, 1982).

 72. The Stark effect in reaction centers from Rhodopseudomonas sphaeroides; D. deLeeuv, M. Malley, G. Buttermann, M. Y. Okamura and G. Feher; Biophys. J. (Abstracts) 37, 111a (1982) (Abstr. #M-PM-E8). (The 26th Annual Meeting of the Biophysical Society, Boston, MA, February 14-17, 1982).

73. Mossbauer studies on reaction centers from Rhodopseudomonas sphaeroides R-26 in strong magnetic fields; B. Boso, P. G. Debrunner, M. Y. Okamura and G. Feher; Biophys. J. (Abstracts) 37, 230a (1982) (Abstr. #T-AM-Po94). (The 26th Annual Meeting of the Biophysical Society, Boston, MA, February 14-17, 1982).

74. The effect of transmembrane potentials on electron transfer in reaction centers incorporated in planar bilayers; A. Gopher, Y. Blatt, M. Y. Okamura, G. Feher and M. Montal; Biophys. J. (Abstracts) 41 121a (1983) (Abstr. #M-PM-B4). (The 27th Annual Meeting of the Biophysical Society, San Diego, Ca., February 13-16, 1983).

75. Photovoltages from reaction centers incorporated in interfacial lipid layers; Y. Blatt, A. Gopher, M. Montal and G. Feher; Biophys. J. (Abstracts) 41, 121a (1983) (Abstr. #M-PM-B5). (The 27th Annual Meeting of the Biophysical Society, San Diego, Ca., February 13-16, 1983).

76. Formation and recombination kinetics of the states D+QAQB- and D+QA- at cryogenic temperature in reaction centers from Rhodopseudomonas sphaeroides; D. Kleinfeld, M. Y. Okamura and G. Feher; Biophys. J. (Abstracts) 41, 121a (1983) (Abstr. #M-PM-B6). (The 27th Annual Meeting of the Biophysical Society, San Diego, Ca., February 13-16, 1983).

77. Sequencing of the gene encoding the M subunit of the reaction center of Rhodopseudomonas sphaeroides; J. C. Williams, G. Feher and M. I. Simon; Biophys. J. (Abstracts) 41, 122a (1983) (Abstr. #M-PM-B7). (The 27th Annual Meeting of the Biophysical Society, San Diego, Ca., February 13-16, 1983).

78. Labeling the cytochrome c2 binding site in reaction centers from Rhodopseudomonas sphaeroides; M. Y. Okamura and G. Feher; Biophys. J. (Abstracts) 41, 122a (1983) (Abstr. #M-PM-B8). (The 27th Annual Meeting of the Biophysical Society, San Diego, Ca., February 13-16, 1983).

79. A model for the damping of oscillations in the semiquinone absorption of reaction centers after successive light flashes; D. Kleinfeld, E. C. Abresch, M. Y. Okamura and G. Feher; Biophys. J. (Abstracts) 41, 122a (1983) (Abstr. #M-PM-B9). (The 27th Annual Meeting of the Biophysical Society, San Diego, Ca., February 13-16, 1983).

80. The structure of the reaction center genes of Rhodopseudomonas sphaeroides; J. C. Williams, G. Feher and M. I. Simon; presented at the 11th Annual American Society for Photobiology meeting, Madison, Wisconsin, June 30-July 1, 1983.

81. Reaction centers from Rhodopseudomonas sphaeroides in reconstituted phospholipid vesicles: Structural characterization and light-dependent photon translocation; K. Hellingwerf, G. Feher and M. Montal; Abstracts of the Sixth International Congress on Photosynthesis (Brussels, Belgium, 1-6 August, 1983), volume 1, p. 342, Abstract #211-14.

82. Identification and characterization of the primary reactants in bacterial photosynthesis; G. Feher; Sixth International EPR Symposium, Denver, Colorado, August 15-17, 1983 (Plenary Lecture).

83. The electron transfer rate from QA- to QB in iron-depleted RCs from Rhodopseudomonas sphaeroides R-26; R. J. Debus, M. Y. Okamura and G. Feher; Biophys. J. (Abstracts) 45, 255a (1984) (Abstr. #W-AM-A3). (The 28th Annual Meeting of the Biophysical Society, San Antonio, Texas, February 19-23, 1984).

84. Charge recombination kinetics in reaction centers with anthraquinone as the primary acceptor: Evidence for protonation accompanying the formation of D+QA-; D. Kleinfeld, M. Y. Okamura and G. Feher; Biophys. J. (Abstracts) 45, 256a (1984) (Abstr. #W-AM-A4). (The 28th Annual Meeting of the Biophysical Society, San Antonio, Texas, February 19-23, 1984).

85. Crystallization of reaction centers from Rhodopseudomonas sphaeroides R-26; J. Allen and G. Feher; Biophys. J. (Abstracts) 45, 256a (1984) (Abstr. #W-AM-A5). (The 28th Annual Meeting of the Biophysical Society, San Antonio, Texas, February 19-23, 1984).

86. Single crystal studies of reaction centers from Rhodopseudomonas sphaeroides R-26; J. P. Allen, R. A. Isaacson, A. McPherson and G. Feher; Biophys. J. (Abstracts) 45, 256a (1984) (Abstr. #W-AM-A6). (The 28th Annual Meeting of the Biophysical Society, San Antonio, Texas, February 19-23, 1984).

87. Characterization of reaction centers containing Mn or Zn in place of Fe; M. Y. Okamura, E. C. Abresch, R. A. Isaacson and G. Feher; Biophys. J. (Abstracts) 45, 257a (1984) (Abstr. #W-AM-A7). (The 28th Annual Meeting of the Biophysical Society, San Antonio, Texas, February 19-23, 1984).

88. Crystallization of reaction centers from Rhodopseudomonas sphaeroides: Preliminary characterization; G. Feher and J. P. Allen (invited paper presented at the Cold Spring Harbor Meeting on The Molecular Biology of the Photosynthetic Apparatus, May 9-13, 1984, Cold Spring Harbor, New York).

89. Sequencing of the genes encoding the subunits of the reaction center from Rhodopseudomonas sphaeroides; J. C. Williams, L. A. Steiner, M. I. Simon and G. Feher (presented at the Cold Spring Harbor Meeting on The Molecular Biology of the Photosynthetic Apparatus, May 9-13, 1984, Cold Spring Harbor, New York).

90. Sequence homology between proteins in the bacterial and plant photosynthetic systems; J. C. Williams, L. A. Steiner, M. I. Simon and G. Feher (invited Paper presented at the 1984 ASBC/AAI Meeting, St. Louis, Missouri, June 3-7, 1984).

91. Reconstitution of iron-depleted reaction centers from Rhodopseudomonas sphaeroides R-26 with Fe, Mn, Cu, & Zn. R. J. Debus, M. Y. Okamura and G. Feher. Biophys. J. (Abstracts). 47, 3a, (1985) (Abstr.# M-AM-A4) (29th Annual Meeting of the Biophysical Society, in Baltimore, Maryland, February 24-28, 1985).

 92. ENDOR of ubisemiquinone in reaction centers from Rhodopseudomonas sphaeroides in which Fe was replaced by Zn. W. Lubitz, R. J. Debus, M. Y. Okamura and G. Feher. Biophys. J. (Abstracts). 47, 3a (1985) (Abstr.# M-AM-A5). (29th Annual Meeting of the Biophysical Society, in Baltimore, Maryland, February 24-28, 1985).

93. Hybridization of RC subunits from native and herbicide resistant strains of Rhodopseudomonas sphaeroides - Localization of the herbicide Binding site. M. Y. Okamura, E. C. Abresch, R. J. Debus and G. Feher. Biophys. J. (Abstracts). 47, 3a, (1985) (Abstr.# M-AM-A6). (29th Annual Meeting of the Biophysical Society, in Baltimore, Maryland, February 24-28, 1985).

94. Crystallization of an Antenna Pigment-Protein from Rhodopseudomonas sphaeroides. J. P. Allen, R. Theiler and G. Feher Biophys. J. (Abstracts). 47, 4a, (1985) (Abstr.# M-AM-A8). (29th Annual Meeting of the Biophysical Society, in Baltimore, Maryland, February 24-28, 1985).

95. Crystal Growth Studies of Lysozyme as a Model for Protein Crystallization. S. D. Durbin and G. Feher. Presented at the First International Conference on Protein Crystal Growth, Stanford, August 14-16, 1985.

96. Structure and Function of Reaction Centers from Rhodopseudomonas sphaeroides; M. Y. Okamura and G. Feher. Presented at the Vth International Symposium of Photosynthetic Prokaryotes, September 22-28, 1985, Grindelwald, Switzerland.

97. ENDOR-Untersuchungen der Ubisemichinon-Elektronenakzeptoren in der Bacteriellen Photosynthese. W. Lubitz, E. C. Abresch, R. J. Debus, R. A. Isaacson, M. Y. Okamura and G. Feher. Presented at the 7th Disskussionstagung der Fachgruppe ``Magnetische Resonanzspektroskopie'' der GDCh, Heidelberg (FRG) Sept. 30 - Oct. 2, 1985.

 98. ENDOR Studies of QA- and QB- in Reaction Centers from Rhodopseudomonas sphaeroides. W. Lubitz, R. A. Isaacson, M. Y. Okamura and G. Feher. Presented at the ``Quinones in the Photosynthetic Membranes'' Conference, Saint Lambert des Bois (France), Oct. 9-11, 1985.

99. Structure and Function of the Quinone-Fe Binding site in Reaction Centers from Rhodopseudomonas sphaeroides. M. Y. Okamura and G. Feher. Presented at the ``Quinones in the Photosynthetic Membranes'' Conference, Saint Lambert des Bois (France), Oct. 9-11, 1985.

100. Studies of Crystal Growth of Lysozyme as a Model System for Protein Crystallization. S. D. Durbin and G. Feher. Biophys. J. (Abstracts) 49, 439a (1986) (Abstr.# W-PM-G5). (30th Biophysical Society Meeting at San Francisco, February 9-13, 1986).

101. Preliminary Electron Density Mapping of the Reaction Centers from .Rs using the Molecular Replacement Method. J. P. Allen and G. Feher, T. O. Yeates, D. C. Rees, D. S. Eisenberg, J. Deisenhofer, H. Michel, R. Huber. Biophys. J. (Abstracts) 49, 583a (1986) (Abstr.# Th-AM-D1). (30th Biophysical Society Meeting at San Francisco, February 9-13, 1986).

102. The Superhyperfine Structure of 14N in Iron Depleted RCs from .Rs R-26.1 Reconstituted with 65Cu: Determination of the Number of Nitrogen to Metal Ligands. G. Feher, R. A. Isaacson, R. J. Debus, M. Y. Okamura. Biophys. J. (Abstracts) 49, 585a (1986) (Abstr.# Th-AM-D8). (30th Biophysical Society Meeting at San Francisco, February 9-13, 1986).

103. Photochemistry in Iron-Depleted Reaction Centers from Rhodopseudomonas sphaeroides R-26.1. D. Holten, C. Kirmaier, R. J. Debus, M. Y. Okamura and G. Feher. Biophys. J. (Abstracts) 49, 585a (1986) (Abstr.# Th-AM-D9). (30th Biophysical Society Meeting at San Francisco, February 9-13, 1986).

104. Deuterium Isotope Effect on Electron Transfer in Reaction Centers from Rhodopseudomonas sphaeroides. M. Y. Okamura and G. Feher. Biophys. J. (Abstracts) 49, 587a (1986) (Abstr.# Th-AM-D13). (30th Biophysical Society Meeting at San Francisco, February 9-13, 1986).

105. Structure of Reaction Centers from Rhodopseudomonas sphaeroides. G. Feher. Bulletin of the American Physical Society, 31, #3 (1986) (Abstr.# DC3). (March Meeting of the American Physical Society 31 March - 4 April 1986, Las Vegas, Nevada).

106. Structure of Reaction Centers from Rps. sphaeroides. G. Feher. Invited talk at the Las Vegas Meeting of the American Physical Society (March 31 - April 4, 1986).

107. ENDOR Studies of Semiquinones in Reaction Centers of Photosynthetic Bacteria. W. Lubitz, R. A. Isaacson, M. Y. Okamura and G. Feher. (XXIII Congress Ampere, Rome, Italy, September 1986). Proceedings, pp. 370-371.

108. Primary Processes in Bacterial Photosynthesis: Structure and Function of Reaction Centers from Rhodopseudomonas sphaeroides. G. Feher. Biological Chemistry Hoppe-Seyler 367, SUPP., p. 67, 1986. (Proceedings of the 17th FEBS Meeting, Berlin (West), Aug. 24-29, 1986).

109. Study of Protein Crystal Growth Mechanisms by Electron Microscopy. S. D. Durbin, D. E. Palmer and G. Feher. Biophys. J. (Abstracts)51, 553a (1987) (Abstr. # Th-AM-C2). (31st Annual Meeting of the Biophysical Society, in New Orleans, Louisiana, February 22-26, 1987).

110. ENDOR of the Reduced Intermediate Electron Acceptor in RCs of R. sphaeroides. G. Feher, R. A. Isaacson, M. Y. Okamura, W. Lubitz. Biophys. J. (Abstracts) 51, 377a (1987) (Abstr. # W-AM-E3). (31st Annual Meeting of the Biophysical Society, in New Orleans, Louisiana, February 22-26, 1987).

111. Light Induced Proton Uptake by RCs from R. sphaeroides R-26.1. P. H. McPherson, M. Y. Okamura, G. Feher, M. Schonfeld. Biophys. J. (Abstracts) 51, 125a (1987) (Abstr. # M-Pos217). (31st Annual Meeting of the Biophysical Society, in New Orleans, Louisiana, February 22-26, 1987).

112. Structure of the Reaction Center from R. sphaeroides at 3.3 Å Resolution. J. P. Allen, G. Feher, T. O. Yeates, H. Komiya, D. C. Rees. Biophys. J. (Abstracts) 51, 377a (1987) (Abstr. # W-AM-E1). (31st Annual Meeting of the Biophysical Society, in New Orleans, Louisiana, February 22-26, 1987).

113. Reaction Centers from Herbicide Resistant Mutants of Rhodopseudomonas sphaeroides. M. Y. Okamura, M. L. Paddock, G. Feher. (Molecular Biology of Photosynthetic Procaryotes Conference, University of Wisconsin-Madison, Madison, Wisconsin, June 7-11, 1987).

114. Studies of Crystal Growth Mechanisms of Proteins by Electron Microscopy. S. D. Durbin and G. Feher. (Crystal Growth of Biological Macromolecules Conference, a FEBS Advanced Lecture Course), Bischenberg, Alsace, France, July 19-25, 1987.

115. A 9 GHz Loop-Gap ENDOR Spectrometer. R. A. Isaacson and G. Feher. (10th International EPR Symposium, in Denver, Colorado, August 3-6, 1987).

116. Reaction Centers from Rb. sphaeroides. M. Y. Okamura and G. Feher. (US-Japan Information Exchange Seminar on "Chemical Approach to the Photosynthetic Reaction Center"), Kyoto, Japan, January 10-14, 1988.

117. ENDOR of the Reduced Intermediate Electron Acceptor in Bacterial and Photosystem II Reaction Centers. W. Lubitz, M. Plato, G. Feher, R. A. Isaacson, M. Y. Okamura. Biophys. J. (Abstracts) 53, 67a (1988) (Abstr. # M-PM-F12). (32nd Annual Meeting of the Biophysical Society, in Phoenix, Arizona, February 28-March 3, 1988).

118. ENDOR of Exchangeable Protons of the Reduced Intermediate Acceptor in RCs from Rb. sphaeroides R-26. G. Feher, R. A. Isaacson, M. Y. Okamura, W. Lubitz. Biophys. J. (Abstracts) 53, 67a (1988) (Abstr. # M-PM-F11). (32nd Annual Meeting of the Biophysical Society, in Phoenix, Arizona, February 28-March 3, 1988).

119. Structure of the Reaction Center from Rhodobacter sphaeroides R-26 and 2.4.1. J. P. Allen, G. Feher, D. C. Rees. Biophys. J. (Abstracts)53, 205a (1988) (Abstr. # TU-AM-MinI-1). (32nd Annual Meeting of the Biophysical Society, in Phoenix, Arizona, February 28-March 3, 1988).

120. Dependence of the Recombination Rate D+QA- to DQA on the Electric Field Applied to Reaction Centers from Rb. sphaeroides R-26 Incorporated into a Planar Lipid Bilayer. T. Arno, A. Gopher, M. Y. Okamura and G. Feher. Biophys. J. (Abstracts)53, 270a (1988) (Abstr. # TU-PM-E9). (32nd Annual Meeting of the Biophysical Society, in Phoenix, Arizona, February 28-March 3, 1988).

121. Stark Effect in PSII RCs from Spinach. M. Losche, K. Satoh, G. Feher and M. Y. Okamura. Biophys. J. (Abstracts) 53, 270a (1988) (Abstr. # TU-PM-E7). (32nd Annual Meeting of the Biophysical Society, in Phoenix, Arizona, February 28-March 3, 1988).

122. pH-Dependence of the Charge Recombination Rate D+QA- to DQA in Reaction Centers from Rb. sphaeroides R-26. P. H. McPherson, T. Arno, M. Y. Okamura and G. Feher. Biophys. J. (Abstracts)53, 271a (1988) (Abstr. # TU-PM-E10). (32nd Annual Meeting of the Biophysical Society, in Phoenix, Arizona, February 28-March 3, 1988).

123. Protein Crystal Growth Mechanisms: Visualization by Electron Microscopy. S. D. Durbin and G. Feher. Biophys. J. (Abstracts) 53, 300a (1988) (Abstr. # T-Pos82). (32nd Annual Meeting of the Biophysical Society, in Phoenix, Arizona, February 28-March 3, 1988).

124. Identification and Characterization of the Primary Reactants in Bacterial Photosynthesis. G. Feher. Presented at the International Conference on Magnetic Resonance in Biological Systems, University of Wisconsin-Madison, August 14-19, 1988.

125. FTIR Studies of the D+QA- and D+QB- States in Reaction Centers from Rb. sphaeroides. K. A. Bagley, E. Abresch, M. Y. Okamura, G. Feher. Biophys. J. (Abstracts) 55, 179a (1989) (Abstr. # M-Pos312). (33rd Annual Meeting of the Biophysical Society, in Cincinnati, Ohio, February 12-16, 1989).

126. The Exchange Interaction Between Cu2+ and QA- in Reaction Centers from Rb. sphaeroides R-26 in which Fe2+ has been Replaced by Cu2+. R. Calvo, M. Passeggi, R. A. Isaacson, M. Y. Okamura and G. Feher. Biophys. J. (Abstracts) 55, 221a (1989) (Abstr. # Tu-AM-G4). (33rd Annual Meeting of the Biophysical Society, in Cincinnati, Ohio, February 12-16, 1989).

127. Superexchange Mechanism of Electron Transfer from QA- to QB in the Fe-Quinone Complex of Bacterial Reaction Centers. M. Y. Okamura and G. Feher. Biophys. J. (Abstracts) 55, 221a (1989) (Abstr. # Tu-AM-G5). (33rd Annual Meeting of the Biophysical Society, in Cincinnati, Ohio, February 12-16, 1989).

128. pH Dependence of the Free Energy Gap Between DQA and D+QA- Determined from the Delayed Fluorescence of D+QA- in RCs from Rb.sphaeroides R-26. P. H. McPherson, M. Y. Okamura, G. Feher, V. Nagarajan and W. W. Parson. Biophys. J. (Abstracts) 55, 221a (1989) (Abstr. # Tu-AM-G6). (33rd Annual Meeting of the Biophysical Society, in Cincinnati, Ohio, February 12-16, 1989).

129. EPR and ENDOR Studies of D+QA Fe2+QB- in Single Crystals of RCs from Rb. sphaeroides. J. P. Allen, E. J. Lous, R. A. Isaacson, M. Y. Okamura and G. Feher. Biophys. J. (Abstracts)55, 222a (1989) (Abstr. # Tu-AM-G7). (33rd Annual Meeting of the Biophysical Society, in Cincinnati, Ohio, February 12-16, 1989).

130. The Stark Effect in Antenna Proteins from Rb. sphaeroides. M. Loesche, P. B. Madden, G. Feher and M. Y. Okamura. Biophys. J. (Abstracts)55, 223a (1989) (Abstr. # Tu-AM-G12). (33rd Annual Meeting of the Biophysical Society, in Cincinnati, Ohio, February 12-16, 1989).

131. Simulation of Lysozyme Crystal Growth by the Monte-Carlo Method. S. D. Durbin and G. Feher. Biophys. J. (Abstracts) 55, 574a (1989) (Abstr. # W-Pos319). (33rd Annual Meeting of the Biophysical Society, in Cincinnati, Ohio, February 12-16, 1989).

132. X-ray Diffraction Studies on Crystals of Modified Photosynthetic Reaction Center Proteins. E. J. Lous, J. P. Allen and G. Feher. Presented at the "American Crystallographic Association'' (ACA) Congress, in Seattle, Washington, July 23-29, 1989.

133. Refinement of the Bacterial Photosynthetic Reaction Center from Rhodobacter sphaeroides Using the Molecular Dynamics Package, X-Plor. A. J. Chirino, H. Komiya and D. C. Rees; J. P. Allen and G. Feher. Presented at the "American Crystallographic Association'' (ACA) Congress, in Seattle, Washington, July 23-29, 1989.

134. Pathway of Proton Transfer in Bacterial Reaction Centers: Replacement of Glutamic Acid 212 in the L Subunit by Glutamine Inhibits Quinone (Secondary Acceptor) Turnover. G. Feher, M. L. Paddock, S. H. Rongey and M. Y. Okamura. Presented at the ``Molecular Biology of Membrane-bound Complexes in Phototropic Bacteria'' Congress, in Freiburg, West Germany, August 1-5, 1989.

135. Mutagenesis of GLUL212 of the Bacterial Reaction Center from Rhodobacter sphaeroides. M. Paddock, S. Rongey, G. Feher and M. Okamura. Presented at the "VIII International Congress on Photosynthesis'', in Stockholm, Sweden, August 6-11, 1989.

136. Studies of Protein Crystal Growth by Electron Microscopy. S. D. Durbin and G. Feher. Presented at the "Third International Conference on the Crystallization of Biological Macromolecules'', Washington, D. C., August 13-18, 1989.

137. Simulation of Lysozyme Crystal Growth by the Monte-Carlo Method. S. D. Durbin and G. Feher. Presented at the "Third International Conference on the Crystallization of Biological Macromolecules'', Washington, D. C., August 13-18, 1989.

138. The Effect of Mutations on the Herbicide Binding Site in Bacterial Reaction Centers. M. L. Paddock, G. Feher and M. Y. Okamura. Presented at the "International Symposia on Herbicides Active in the Chloroplast'', in Monheim, West Germany, August 13-15, 1989.

139. Proton Uptake by RCs from Rb. sphaeroides in which Glu-L212 was Replaced with Gln. P. H. McPherson, M. Schonfeld, M. L. Paddock, G. Feher and M. Y. Okamura. Biophys. J. (Abstracts) 57, 404a (1990) (Abstr. # W-PM-F6). (34th Annual Meeting of the Biophysical Society, in Baltimore, Maryland, February 18-22, 1990).

140. pH Dependence of Charge Recombination in RCs from Rb. sphaeroides in which Glu-L212 is Replaced with ASP. M. L. Paddock, G. Feher and M. Y. Okamura. Biophys. J. (Abstracts) 57, 569a (Abstr. # W-Pos601). (34th Annual Meeting of the Biophysical Society, in Baltimore, Maryland, February 18-22, 1990).

141. Functional Role of Amino Acid Residues near the QB Binding Site in Reaction Centers from Rb. sphaeroides. M. Y. Okamura and G. Feher. (US/Japan Seminar on Photosynthesis, Honolulu, Hawaii, March 5-8, 1990).

142. Pathway of Proton Transfer in Bacterial RCs from Rb. sphaeroides: Replacement of Ser-L223 with ALA Inhibits Electron and Proton Transfer to the Secondary Quinone. M. L. Paddock, P. H. McPherson, G. Feher and M. Y. Okamura. (10th International Biophysics Congress, Vancouver, Canada, July 29-August 3, 1990).

143. Flash-Induced Electrogenic Events Associated with Electron and Proton Transfer in Bacterial Reaction Centers Incorporated in Phospholipid Interfacial Layers. P. Brzezinski, M. L. Paddock, M. Y. Okamura and G. Feher. (10th International Biophysics Congress, Vancouver, Canada, July 29-August 3, 1990).

144. EPR, ENDOR and Special Triple Studies of D+ in RCs of the M202 His to Leu Hetero-Dimer-Mutant from Rb. sphaeroides. E. J. Lous, M. Huber, R. A. Isaacson, G. Feher, D. Gaul and C. Schenck. (10th International Biophysics Congress, Vancouver, Canada, July 29-August 3, 1990).

145. EPR/ENDOR 9 GHz Spectrometer Sensitivity Enhancement for Small Samples Using Dielectric Resonators. R. A. Isaacson and G. Feher. (32nd Rocky Mountain Conference on Analytical Chemistry, in Denver, Colorado, July 29-August 2, 1990).

146. Structure and Function of Photosynthetic Reaction Centers. G. Feher and M. Y. Okamura. International School on Structure and Conformational Dynamics of Biomacromolecules, in High Tatras, Czechoslovakia, September 30-October 5, 1990).

147. Pathway of Proton Transfer in Bacterial RCs from Rb. sphaeroides: Replacement of Asp-L213 with ASN Inhibits Electron and Proton Transfer to the Secondary Quinone. S.H. Rongey, M. L. Paddock, A. L. Juth, P. H. McPherson, G. Feher and M. Y. Okamura. Biophys. J. (Abstracts) 59, 142a (1991) (Abstr. # M-Pos360). (35th Annual Meeting of the Biophysical Society, in San Francisco, California, February 24-28, 1991).

148. The Rate of Electron Transfer QA- QB to QA QB- in RCs from Rb. sphaeroides in which Asp-L213 is Replaced with ASN. P. H. McPherson, S. H. Rongey, M. L. Paddock, G. Feher and M. Y. Okamura. Biophys. J. (Abstracts)59, 142a (1991) (Abstr. # M-Pos361). (35th Annual Meeting of the Biophysical Society, in San Francisco, California, February 24-28, 1991).

149. The pH Dependence of Charge Recombination in RCs from Rb. sphaeroides in which Asp-L213 is Replaced by ASN. M. L. Paddock, S. H. Rongey, P. H. McPherson, G. Feher and M. Y. Okamura. Biophys. J. (Abstracts) 59, 142a (1991) (Abstr. # M-Pos362). (35th Annual Meeting of the Biophysical Society, in San Francisco, California, February 24-28, 1991).

150. Electrogenicity Associated with Proton Uptake by QB2- in Bacterial RCs. P. Brzezinski, M. L. Paddock, M. Y. Okamura and G. Feher. Biophys. J. (Abstracts) 59, 143a (1991) (Abstr. # M-Pos363). (35th Annual Meeting of the Biophysical Society, in San Francisco, California, February 24-28, 1991).

151. Electrogenicity Associated with Proton Uptake by Glu-L212 and Asp-L213 upon Forming QB- in Bacterial RCs. P. Brzezinski, M. L. Paddock, S.H. Rongey, M. Y. Okamura and G. Feher. Biophys. J. (Abstracts) 59, 143a (1991) (Abstr. # M-Pos364). (35th Annual Meeting of the Biophysical Society, in San Francisco, California, February 24-28, 1991).

152. Titration of Multiple Sites in a Protein by Monte Carlo Sampling: Application to the Reaction Center from Rb. sphaeroides. P. Beroza, D. R. Fredkin, M. Okamura and G. Feher. Biophys. J. (Abstracts)59, 412a (1991) (Abstr. # W-PM-D4). (35th Annual Meeting of the Biophysical Society, in San Francisco, California, February 24-28, 1991).

153. Effects of Iron Ligand Substitutions in Reaction Centers from Rhodobacter sphaeroides. J. C. Williams, M. L. Paddock, G. Feher and J.P. Allen. Biophys. J. (Abstracts) 59, 142a (1991) (Abstr. # M-Pos359). (35th Annual Meeting of the Biophysical Society, in San Francisco, California, February 24-28, 1991).

154. Nucleation of Virus Crystals Studied by Electron Microscopy. S.D. Durbin and G. Feher. Biophys. J. (Abstracts) 59, 120a (1991) (Abstr. # M-Pos282). (35th Annual Meeting of the Biophysical Society, in San Francisco, California, February 24-28, 1991).

155. Dielectric Resonator for 9 GHz ENDOR/EPR Incorporating Efficient Light Irradiation. R.A. Isaacson and G. Feher. (33rd Rocky Mountain Conference on Analytical Chemistry, in Denver, Colorado, July 29-August 1, 1991).

156. Crystallization of the Oxygen Evolving Reaction Center of Photosystem II. Noam Adir, Melvin Okamura and George Feher. (15th International Congress of Biochemistry, in Jerusalem, Israel, August 4-8, 1991).

157. ENDOR of the Oxidized Primary Donor of the Heterodimer Mutants HL (M202) and HL (L173) in Single Crystals of Reaction Centers from Rb. sphaeroides. M. Huber, R. A. Isaacson, E. C. Abresch, D. Gaul and C.C. Schenck. Biophys. J. (Abstracts) 61, 104a (1992) (Abstr. # 602). (1992 ASBMB/Biophysical Society, in Houston, Texas, February 9-13, 1992).

158. Electrostatic Effects of Replacing Asp-L210 with Asn in Bacterial RCs from Rb. sphaeroides. M. L. Paddock, A. Juth, G. Feher and M. Y. Okamura. Biophys. J. (Abstracts) 61, 153a (1992) (Abstr. # 875). (1992 ASBMB/Biophysical Society, in Houston, Texas, February 9-13, 1992).

159. X-ray Structure Determination of Cytochrome c2 from Rhodobacter sphaeroides. H. L. Axelrod, G. Feher, J. P. Allen, M. Day, A. Chirino, B. T. Hsu, D. C. Rees. Biophys. J. (Abstracts)61, 103a (1992) (Abstr. # 596). (1992 ASBMB/Biophysical Society, in Houston, Texas, February 9-13, 1992).

160. Electrogenic Change after the Formation of D+QA- in Bacterial Reaction Centers. P. Brzezinski, M. L. Paddock, A. Messinger, M. Y. Okamura and G. Feher. Biophys. J. (Abstracts) 61, 101a (1992) (Abstr. # 585). (1992 ASBMB/Biophysical Society, in Houston, Texas, February 9-13, 1992).

161. Crystallization of the Reaction Center of Photosystem II. N. Adir, M. Y. Okamura and G. Feher. Biophys. J. (Abstracts) 61, 101a (1992) (Abstr. # 586). (1992 ASBMB/Biophysical Society, in Houston, Texas, February 9-13, 1992).

162. NMR Studies of Quinone Binding to Reaction Centers from Rb. sphaeroides. M. Trotta, G. Feher and M. Y. Okamura. Biophys. J. (Abstracts) 61, 101a (1992) (Abstr. # 584). (1992 ASBMB/Biophysical Society, in Houston, Texas, February 9-13, 1992).

163. EPR and ENDOR Investigations of the Primary Reactants in Bacterial Photosynthesis. G. Feher. (34th Rocky Mountain Conference on Analytical Chemistry, in Denver, Colorado, August 2-6, 1992).

164. Liquid Cooled CW ENDOR Coil with Dielectric Resonator at 9 GHz Optimized for Small Aqueous Samples. R.A. Isaacson and G. Feher. (34th Rocky Mountain Conference on Analytical Chemistry, in Denver, Colorado, August 2-6, 1992).

165. X-ray Structure Determination of Cytochrome c2 from Rhodobacter sphaeroides at 2 Å Resolution. H. L. Axelrod, G. Feher, J. P. Allen, M. Day, A. Chirino, B. T. Hsu, D.C. Rees. (American Crystallographic Association Society Meeting, in Pittsburgh, Pennsylvania, August 9-12, 1992).

166. Pathway of Proton Transfer in Bacterial RCs. M. L. Paddock, S.H. Rongey, P. H. McPherson, A. Juth, C. Sterrett, G. Feher and M. Y. Okamura. (9th International Conference on Photosynthesis, in Nagoya, Japan, August 30 - September 5, 1992).

167. Crystallization of the PSII-Reaction Center. N. Adir, M. Okamura and G. Feher. (9th International Conference on Photosynthesis, in Nagoya, Japan, August 30 - September 5, 1992).

168. Reaction Centers from Proton Transfer Mutants of Rb. sphaeroides: Characterization by Infrared Spectroscopy. R. Hienerwadel, E. Nabedryk, M. L. Paddock, S. Rongey, G. Feher, M. Y. Okamura, W. Mantele and J. Breton. (9th International Conference on Photosynthesis, in Nagoya, Japan, August 30 - September 5, 1992).

169. Proton Transfer in Bacterial Reaction Center. M. Y. Okamura, M. L. Paddock, P.H. McPherson, S. Rongey and G. Feher. (9th International Conference on Photosynthesis, in Nagoya, Japan, August 30 - September 5, 1992).

170. Additional Evidence of Structural Changes Following the Formation of D+QA- in Bacterial Reaction Centers: Measurement of Light-Induced Electrogenicities in RCs Incorporated in a Phospholipid Monolayer. P. Brzezinski, M. Y. Okamura and G. Feher. (Research Frontiers in Biophysics, October 5-6, 1992, in Stockholm, Sweden. Symposium in honor of Anders Ehrenberg's retirement).

171. EPR and ENDOR Studies of QA- in Reaction Center Single Crystals from Rb. sphaeroides R-26 in which Iron was Replaced by Zn. W. Lubitz, R.A. Isaacson, E.C. Abresch and G. Feher. Biophys. J. (Abstracts) 64, A18 (1993) (Abstr. # M-PM-K4). (37th Annual Meeting of the Biophysical Society, in Washington, D.C., February 14-18, 1993).

172. UV Difference Spectrum Associated with Slow Proton Uptake in Glu-L212 to Gln Mutant RCs from Rb. sphaeroides. P. H. McPherson, M. L. Paddock, M. Y. Okamura and G. Feher. Biophys. J. (Abstracts) 64, A18 (1993) (Abstr. # M-PM-K5). (37th Annual Meeting of the Biophysical Society, in Washington, D.C., February 14-18, 1993).

173. The Role of Asp-L213 in Proton Transfer in Bacterial RCs from Rb. sphaeroides. M. L. Paddock, S. H. Rongey, P. H. McPherson, A. Juth, G. Feher and M. Y. Okamura. Biophys. J. (Abstracts) 64, A18 (1993) (Abstr. # M-PM-K6). (37th Annual Meeting of the Biophysical Society, in Washington, D.C., February 14-18, 1993).

174. The Proton-Coupled Electron Transfer Reaction QA-QB- + 2 H+ to QAQB H2 ( kAB(2) ) is Accelerated by Asp Residues at L213 or M44 in Reaction Centers from Rb. sphaeroides. Biophys. J. (Abstracts) 64, A19 (1993) (Abstr. # M-PM-K7). S. H. Rongey, M. L. Paddock, G. Feher and M. Y. Okamura. (37th Annual Meeting of the Biophysical Society, in Washington, D.C., February 14-18, 1993).

175. Hybrid Finite Difference-Boundary Integral Method for Calculating Solvation Energies. P. Beroza, D.R. Fredkin and G. Feher. Biophys. J. (Abstracts) 64, A220 (1993) (Abstr. # Tu-Pos503). (37th Annual Meeting of the Biophysical Society, in Washington, D.C., February 14-18, 1993).

176. Light-Induced FTIR Difference Spectroscopy of Proton Transfer Mutants of Rb. sphaeroides. E. Nabedryk, J. Breton, R. Hienerwadel, W. Mantele, M. L. Paddock, S.H. Rongey, G. Feher and M. Y. Okamura. Biophys. J. (Abstracts) 64, A214 (1993) (Abstr. # Tu-Pos468). (37th Annual Meeting of the Biophysical Society, in Washington, D.C., February 14-18, 1993).

177. Time-Resolved IR Spectroscopy of Proton Transfer in Native and Mutant Reaction Centers of Rb. sphaeroides. R. Hienerwadel, M. Y. Okamura, M. L. Paddock, S.H. Rongey, G. Feher, J. Breton, E. Nabedryk, W. Mantele. Biophys. J. (Abstracts) 64, A214 (1993) (Abstr. # Tu-Pos467).(37th Annual Meeting of the Biophysical Society, in Washington, D.C., February 14-18, 1993).

178. EPR/ENDOR on QA- in Single Crystals of Bacterial Photosynthetic Reaction Centers from Rb. sphaeroides. R. A. Isaacson, E. C. Abresch and G. Feher, F. Lendzian and W. Lubitz, J. C. Williams and J. P. Allen. (35th Rocky Mountain Conference on Analytical Chemistry, in Denver, Colorado, July 25-29, 1993).

179. Proton Transfer in Reaction Centers from Rb. sphaeroides. G. Feher and M. Y. Okamura. (11th International Biophysics Congress, in Budapest, Hungary, July 25-30, 1993).

180. Co-Crystallization of the Photosynthetic Reaction Centre and Cytochrome c2 from Rb. sphaeroides. N. Adir, H. Axelrod, D.C. Rees, M. Y. Okamura and G.Feher. (Fifth International Conference on Crystallization of Biological Macromolecules, in San Diego, CA. August 8-13, 1993).

181. X-ray Structure Determination of Cytochrome c2 from Rhodobacter sphaeroides at 1.6 Å Resolution. H.L. Axelrod, G. Feher, A. Chirino, M. Day, B.T. Hsu, D.C. Rees. (Fifth International Conference on Crystallization of Biological Macromolecules, in San Diego, CA. August 8-13, 1993).

182. EPR/ENDOR on the Ubiquinone Radical Anion QA- in Single Crystals of Bacterial Photosynthetic Reaction Centers. W. Lubitz, F. Lendzian, R.A. Isaacson, E.C. Abresch, G. Feher, J.C. Williams and J.P. Allen. (5th European Photobiology Congress, in Marburg, Germany, September 19-26, 1993).

183. Proton Transport in Bacterial Reaction Centers. M. Y. Okamura, M. L. Paddock, S. H. Rongey, A. Juth and G. Feher. (2nd IUBMB Conference, Biochemistry of Cell Membranes, in Bari, Italy, September 29-October 3, 1993).

184. Proton Transport in Bacterial Reaction Centers. M. Y. Okamura, M. L. Paddock, P. H. McPherson, S.H. Rongey, A. Juth, P. Beroza, D. Fredkin and G. Feher. Biological Chemistry Hoppe-Seyler; (Workshop on Structure-Function of Ion-Translocating Complexes, in Freiburg, Germany, October 3-7, 1993).

185. EPR Studies at 35 GHz of QA- in Single Crystals of Reaction Centers from Rb. sphaeroides R-26. R. A. Isaacson, E. C. Abresch, G. Feher, F. Lendzian and W. Lubitz. Biophys. J. (Abstracts)66, A229 (1994) (Abstr. # W-AM-C9). (38th Annual Meeting of the Biophysical Society, in New Orleans, Louisiana, March 6-10, 1994).

186. Direct Charge Recombination from D+QAQB- to DQAQB in Bacterial Reaction Centers from Rb. sphaeroides. A. Labahn, M. L. Paddock, P.H. McPherson, M. Y. Okamura and G. Feher. Biophys. J. (Abstracts) 66, A127 (1994) (Abstr. # Tu-AM-C7). (38th Annual Meeting of the Biophysical Society, in New Orleans, Louisiana, March 6-10, 1994).

187. Electron Transfer QA- QB to QA QB- in Rb. sphaeroides: Possible Evidence for an Intermediate State. M. L. Paddock, M. S. Graige, G. Feher and M. Y. Okamura. Biophys. J. (Abstracts) 66, A127 (1994) (Abstr. # Tu-AM-C6). (38th Annual Meeting of the Biophysical Society, in New Orleans, Louisiana, March 6-10, 1994).

188. Binding of Cytochrome c2 to the Reaction Center from the Asp-L155 to Lys and Asp-M184 to Lys Mutants of Rb. sphaeroides. S. H. Rongey, A. L. Juth, G. Feher and M. Y. Okamura. Biophys. J. (Abstracts)66, A228 (1994) (Abstr. # W-AM-C8). (38th Annual Meeting of the Biophysical Society, in New Orleans, Louisiana, March 6-10, 1994).

189. Co-crystallization and Preliminary Structure Determination of the Photosynthetic Reaction Center and Cytochrome c2 Complex from Rb. sphaeroides. N. Adir, M. Y. Okamura and G. Feher. Biophys. J. (Abstracts)66, A127 (1994) (Abstr. # Tu-AM-C9). (38th Annual Meeting of the Biophysical Society, in New Orleans, Louisiana, March 6-10, 1994).

190. Crystallization and X-ray Diffraction to 2.9 Å Resolution of the Reaction Center Complex of Photosystem II from the Thermophilic Cyanobacterium Mastigocladus laminosus. N. Adir, T. Gilon, R. Nechushtai, E. Abresch, M. Y. Okamura and G. Feher. Biophys. J. (Abstracts)66, A228 (1994) (Abstr. # W-AM-C7).(38th Annual Meeting of the Biophysical Society, in New Orleans, Louisiana, March 6-10, 1994).

191.Calculating the pKa of Glu L212 in the Photosynthetic Reaction Center: Sensitivity of the Results to Variation of Parameters. P. Beroza, D. R. Fredkin, M. Y. Okamura and G. Feher. Biophys. J. (Abstracts)66, A229 (1994) (Abstr. # W-AM-C10). (38th Annual Meeting of the Biophysical Society, in New Orleans, Louisiana, March 6-10, 1994).

192. Proton Transfer in Bacterial Reaction Centers from Rb. sphaeroides. M. L. Paddock, S.H. Rongey, P. H . McPherson, A. C. Juth, G. Feher and M. Y. Okamura. Biophys. J. (Abstracts) 66, A1 (1994) (Abstr. # SubBioen Su-AM-3). (38th Annual Meeting of the Biophysical Society, in New Orleans, Louisiana, March 6-10, 1994).

193. Proton Transfer in Bacterial Reaction Centers Studied by Time-Resolved Infrared Spectroscopy. W. Mantele, R. Hienerwadel, C. Fogel, S. Gryzbek, E. Nabedryk, J. Breton, M. L. Paddock, G. Feher and M. Y. Okamura. Biophys. J. (Abstracts) 66, A1 (1994) (Abstr. # SubBioen Su-AM-4). (38th Annual Meeting of the Biophysical Society, in New Orleans, Louisiana, March 6-10, 1994).

194. Crystallization and X-ray Diffraction Studies of the Reaction Center Complex of PS II. N. Adir, E. Abresch, M. Y. Okamura and G. Feher. (4th International Congress of Plant Molecular Biology, in Amsterdam, The Netherlands, June 19-24, 1994).

195. EPR and ENDOR Studies of the Quinone Radical Anions in Bacterial Photosynthetic Reaction Center. W. Lubitz, R.A. Isaacson, E.C. Abresch, F. Lendzian, A. Gardiner and G. Feher. (European EPR Conference, in Paris, France, September 3-9, 1994).

196. Suggested Role of an Internal Water Molecule in Proton Transfer in a Ser-L223 to Gly Site-Directed Mutant Reaction Center from Rb. sphaeroides. M. L. Paddock, G. Feher and M. Y. Okamura. Biophys. J. (Abstracts) 68, A246 (1995). (Abstr. # W-AM-J4). (39th Annual Meeting of the Biophysical Society, in San Francisco, CA., February 12-16, 1995).

197. X-Ray Crystallographic Analysis of a Site-Directed Proton Transfer Mutant Ser-L223 to Gly of the Bacterial RC from Rb. sphaeroides. H. L. Axelrod, E. Abresch, M. L. Paddock, M. Y. Okamura, G. Feher and D. C. Rees. Biophys. J. (Abstracts) 68, A247 (1995). (Abstr. # W-AM-J7). (39th Annual Meeting of the Biophysical Society, in San Francisco, CA., February 12-16, 1995).

198. The Mechanism of Proton-Coupled Electron Transfer to QB in Reaction Centers from Rb. sphaeroides. M. S. Graige, M. L. Paddock, A. Labahn, J. M. Bruce, G. Feher, M. Y. Okamura. Biophys. J. (Abstracts) 68, A246 (1995). (Abstr. # W-AM-J6). (39th Annual Meeting of the Biophysical Society, in San Francisco, CA., February 12-16, 1995).

199. Measurement of Direct Charge Recombination from D+ QA QB- to DQA QB in Bacterial Reaction Centers from Rb. sphaeroides Containing Low Potential Quinone in the QA-Site. A. Labahn, J.M. Bruce, M. Y. Okamura and G. Feher. Biophys. J. (Abstracts) 68, A95 (1995). (Abstr. # M-Pos391). 39th Annual Meeting of the Biophysical Society, in San Francisco, CA., February 12-16, 1995).

200. ENDOR Studies of QA- in Single Crystals of Reaction Centers from Rb. sphaeroides. R. A. Isaacson, E. Abresch, G. Feher, W. Lubitz, J. C. Williams and J. P. Allen. Biophys. J. (Abstracts) 68, A246 (1995). (Abstr. # W-AM-J2). (39th Annual Meeting of the Biophysical Society, in San Francisco, CA., February 12-16, 1995).

201. Importance of a Carboxylic Acid at H173 for Proton-Coupled Electron Transfer in RCs of Rb. sphaeroides. S. H. Rongey, A. L. Juth, M. L. Paddock, G. Feher and M. Y. Okamura. Biophys. J. (Abstracts) 68, A247 (1995). (Abstr. # W-AM-J8). (39th Annual Meeting of the Biophysical Society, in San Francisco, CA., February 12-16, 1995).

202. The Role of Hydrogen Bonded Protons in the Photochemical Reduction of QB to QB H2 in Reaction Centers of Rb. sphaeroides. M. L. Paddock, E. Abresch, R.A. Isaacson, G. Feher and M. Y. Okamura. Biophys. J. (Abstracts) 68, A246 (1995). (Abstr. # W-AM-J3). (39th Annual Meeting of the Biophysical Society, in San Francisco, CA, February 12-16, 1995).

203. Reaction Centers of Purple Bacteria. G. Feher. (Xth International Photosynthesis Congress, in Montpellier, France, August 20-25, 1995).

204. The Role of Amino Acid Residues near QB in Proton Transfer in Reaction Centers from Rb. sphaeroides. M. L. Paddock, S. H. Rongey, G. Feher and M. Y. Okamura. (Xth International Photosynthesis Congress, in Montpellier, France, August 20-25, 1995).

205. Mechanism of Proton-Coupled Electron Transfer to QB in Reaction Centers from Rb. sphaeroides. M. S. Graige, M. L. Paddock, S. H. Rongey, G. Feher and M. Y. Okamura. (Xth International Photosynthesis Congress, in Montpellier, France, August 20-25, 1995).

206. The Electrostatic Effects of Glu and Asp at the L212 and L213 Sites on Electron Transfers Involving QB in RCs from Rb. sphaeroides. M. L. Paddock, G. Feher and M. Y. Okamura. Biophys. J. (Abstracts)70, A11 (1996). (Abstr. # Su-AM-G6). (40th Annual Meeting of the Biophysical Society, in Baltimore, MD, February 17-21, 1996).

207. Using Stigmatellin to Probe the Electrostatic Environment of the QB Site in Bacterial RCs. M. S. Graige, M. L. Paddock, G. Feher, M. Y. Okamura. Biophys. J. (Abstracts) 70, A11 (1996)(Abstr. # Su-AM-G7). (40th Annual Meeting of the Biophysical Society, in Baltimore, MD, February 17-21, 1996).

208. The Rate Limiting Step in the Observed Reaction, QA- QB to QA QB-, is not Electron Transfer. M. S. Graige, G. Feher, M. Y. Okamura. Biophys. J. (Abstracts) 70, A10 (1996). (Abstr. # Su-AM-G4). (40th Annual Meeting of the Biophysical Society, in Baltimore, MD, February 17-21, 1996).

209. Determination of the Rate Limiting Step in the Reaction, QA- QB- + H+ to QA ( QB H )-, in Asp-L213 to Asn Mutant RCs from Rb. sphaeroides. M. S. Graige, M. L. Paddock, G. Feher, M. Y. Okamura. Biophys. J. (Abstracts) 70, A11 (1996). (Abstr. # Su-AM-G5). (40th Annual Meeting of the Biophysical Society, in Baltimore, MD, February 17-21, 1996).

210. Light Induced Proton Coupled Electron Transfer in Reaction Centers from Rb. sphaeroides. M. L. Paddock, M. S. Graige, S. H. Rongey, G. Feher and M. Y. Okamura. (Twenty-Fourth Annual Meeting, American Society for Photobiology, Atlanta, GA, June 15-20, 1996).

211. A Crystallographic Investigation of Light-Induced Structural Changes in Reaction Centers of Rb. sphaeroides. E. C. Abresch, M. H. B. Stowell, T. M. McPhillips, D. C. Rees, S. M. Soltis and G. Feher. Biophys. J. (Abstracts) 72, A8 (1997). (Abstr. # M-AM-E6). (41st Annual Meeting of the Biophysical Society Meeting, in New Orleans, LA, March 2-6, 1997).

212. Identification of Hydrogen Bonds to QB- in RCs of Rb. sphaeroides by ENDOR Spectroscopy. M. L. Paddock, E. Abresch, R. A. Isaacson, G. Feher and M. Y. Okamura. Biophys. J. (Abstracts) 72, A8 (1997). (Abstr. # M-AM-E5). (41st Annual Meeting of the Biophysical Society Meeting, in New Orleans, LA, March 2-6, 1997).

213. Observation of the Protonated Semiquinone in RCs of Rb. sphaeroides Supports the Two-Step Mechanism of Proton-Activated Electron Transfer. M. S. Graige, M. L. Paddock, G. Feher and M. Y. Okamura. Biophys. J. (Abstracts) 72, A7 (1997). (Abstr. # M-AM-E3). (41st Annual Meeting of the Biophysical Society Meeting, in New Orleans, LA., March 2-6, 1997).

214. Mapping the Cyt c2 Binding Site of the RC:Cyt c2 Complex Using Site-Directed Mutagenesis. M. Tetreault, S. H. Rongey, G. Feher and M. Y. Okamura. Biophys. J. (Abstracts) 72, A7 (1997). (Abstr. # M-AM-E4). (41st Annual Meeting of the Biophysical Society Meeting, in New Orleans, LA, March 2-6, 1997).

215. Interaction of QB and QB- with the Protein in Native and Ser-L223 to Ala Rb. sphaeroides Reaction Centers Probed by Light-Induced FTIR Difference Spectroscopy. J. Breton, E. Nabedryk, C. Boullais, C. Mioskowski, M. L. Paddock, G. Feher and M. Y. Okamura. Biophys. J. (Abstracts) 72, A7 (1997). (Abstr. # M-AM-E1). (41st Annual Meeting of the Biophysical Society Meeting, in New Orleans, LA, March 2-6, 1997).

216. Improved Resolution of X-Ray Diffraction of Crystals of Reaction Centers from Rb. sphaeroides: Light Induced Structural Changes and Elucidation of Possible Water (Proton) Channels; E.C. Abresch, M.H.B. Stowell, T.M. McPhillips, D.C. Rees, S.M. Soltis, M. L. Paddock, H.L. Axelrod, M. Y. Okamura and G. Feher. (Cadarache III ESF Workshop on "Reaction Centers of Photosynthetic Purple Bacteria : Structure, Spectroscopy, Dynamics", in Cadarache, France, June 1-6, 1997).

217. The Influence of Fe2+ on T1 of the Primary Reactants D+, I-, QA-, QB- in Reaction Centers from Photosynthetic Bacteria. Rafael Calvo, Roger A. Isaacson, Edward C. Abresch and George Feher. (39th Rocky Mountain Conference on Analytical Chemistry, in Denver, Colorado, August 3-7, 1997).

218. Magnetic Coupling between QA- and QB- in RCs of Rb. sphaeroides Determined by EPR Spectroscopy; R. Calvo, M. L. Paddock, E. Abresch, R.A. Isaacson, M. Y. Okamura and G. Feher. Biophys. J. (Abstracts) 74, A135 (1998). (Abstr. # Tu-PM-F4). (42nd Annual Meeting of the Biophysical Society Meeting, in Kansas City, MO, February 22-26, 1998).

219. Mechanism of Proton-Coupled Electron Transfer QA- QB- +H+ to QA ( QB H )- in Bacterial RCs Determined with Site-Directed Mutants; M. L. Paddock, M. S. Graige, G. Feher and M. Y. Okamura. Biophys. J. (Abstracts) 74, A135 (1998). (Abstr. # Tu-PM-F6). (42nd Annual Meeting of the Biophysical Society Meeting, in Kansas City, MO, February 22-26, 1998).

220. QA- and QB- in ZnRCs of Rb. sphaeroides Studied by Orientation-Selected ENDOR at 35 GHz; R. A. Isaacson, E. C. Abresch, M. L. Paddock, G. Feher, F. Lendzian and W. Lubitz. Biophys. J. (Abstracts) 74, A135 (1998). (Abstr. # Tu-PM-F3). (42nd Annual Meeting of the Biophysical Society Meeting, in Kansas City, MO, February 22-26, 1998).

221. The Mechanism of Proton-Coupled Electron Transfer in Mutant RCs from Rb. sphaeroides; M. S. Graige, M. L. Paddock, G. Feher and M. Y. Okamura. Biophys. J. (Abstracts) 74, A135 (1998). (Abstr. # Tu-PM-F5). (42nd Annual Meeting of the Biophysical Society Meeting, in Kansas City, MO, February 22-26, 1998).

222. A Stronger Binding Cyt c2 : Reaction Center Complex in Mutant RCs from Rhodobacter sphaeroides ; M. Tetreault, T. Turanchick, M. L. Paddock, G. Feher and M. Y. Okamura. Biophys. J. (Abstracts)74, A75 (1998). (Abstr. # M-Pos186). (42nd Annual Meeting of the Biophysical Society Meeting, in Kansas City, MO, February 22-26, 1998).

223. Co-Crystals of the RC-Cyt c2 Complex from Rhodobacter sphaeroides, with an Improved Cyt c2 RC Ratio; H.L. Axelrod, E. Abresch, R. Isaacson, M. Tetreault, M. Y. Okamura and G. Feher). Biophys. J. (Abstracts) 74, A146 (1998). (Abstr. # Tu-PM-N7). (42nd Annual Meeting of the Biophysical Society Meeting, in Kansas City, MO, February 22-26, 1998).

 224. Temperature Dependence of the Direct Charge Recombination from QB in Bacterial Reaction Centers from Rhodobacter sphaeroides; A. Labahn, R. Schmid, M. Y. Okamura and G. Feher. Biophys. J. (Abstracts) 74, A135 (1998). (Abstr. # Tu-PM-F7). (42nd Annual Meeting of the Biophysical Society Meeting, in Kansas City, MO, February 22-26, 1998).

225.  Spin-Lattice Relaxation of F- in Bacterial Photosynthetic Reaction Centers; R. Calvo, R.A. Isaacson, E.C. Abresch, M.Y. Okamura, G. Feher. Biophys. J. (Abstracts) 76, A357 (1999). (Abstr. # Tu-Pos463). (43rd Annual Meeting of the Biophysical Society Meeting, in Baltimore, MD, February 13-17, 1999).

226.  X-Ray Structure Determination of the RC-Cyt c2 Complex from Rhodobacter sphaeroides; H.L. Axelrod, E.C. Abresch, M.Y. Okamura, G. Feher, A.P. Yeh, D.C. Rees. Biophys. J. (Abstracts) 76, A20 (1999). (Abstr. # Su-AM-J5). (43rd Annual Meeting of the Biophysical Society Meeting, in Baltimore, MD, February 13-17, 1999).

227. Crystal Structure of the Charge-Separated State, D+ QA-, in Photosynthetic Reaction Centers from Rb. sphaeroides; E.C. Abresch, A.P. Yeh, S.M. Soltis, D.C. Rees, H.L. Axelrod, M.Y. Okamura and G. Feher. Biophys. J. (Abstracts) 76, A141 (1999). (Abstr. # M-AM-D6). (43rd Annual Meeting of the Biophysical Society Meeting, in Baltimore, MD, February 13-17, 1999).

228. Identification of Hydrogen Bonds to QA- in RCs of Rb. sphaeroides by ENDOR Spectroscopy; M.L. Paddock, E.C. Abresch, R.A. Isaacson, W. Lubitz, M.Y. Okamura and G. Feher. Biophys. J. (Abstracts) 76, A141 (1999). (Abstr. # M-AM-D7). (43rd Annual Meeting of the Biophysical Society Meeting, in Baltimore, MD, February 13-17, 1999).

229. Magnetic Coupling Between QA- and QB-  in RCs of Rb. sphaeroides Determined by EPR Spectroscopy; R. Calvo, W. Hofbauer, F. Lendzian, W. Lubitz, M.L. Paddock, E.C. Abresch, R.A. Isaacson, M.Y. Okamura and G. Feher. Biophys. J. (Abstracts) 76, A392 (1999). (Abstr. # W-AM-F5). (43rd Annual Meeting of the Biophysical Society Meeting, in Baltimore, MD, February 13-17, 1999).

230. Crystal Structure of a Photosynthetic Revertant from Rb. sphaeroides: Mechanism of Action of a Long Distant Suppressor Mutation; M.L. Paddock, H.L. Axelrod, E.C. Abresch, A.P. Yeh, D.C. Rees, G. Feher and M.Y. Okamura. Biophys. J. (Abstracts) 76, A141 (1999). (Abstr. # M-AM-D5). (43rd Annual Meeting of the Biophysical Society Meeting, in Baltimore, MD, February 13-17, 1999).

231. The Effects of Compensating Charged Mutations on Cytochrome C2 and Reaction Center Support a Model for the CYT/RC Complex; M. Tetreault, M. Cusanovich, T. Meyer, G. Feher and M.Y. Okamura. Biophys. J. (Abstracts) 76, A20 (1999). (Abstr. # Su-AM-J6). (43rd Annual Meeting of the Biophysical Society Meeting, in Baltimore, MD, February 13-17, 1999).

232. EPR Study of the Molecular and Electronic Structure of the QA-QB- State of the Photosynthetic Reaction Center in Rb. sphaeroides R26 at 35 and 94 GHz. Rafael Calvo, Wulf Hofbauer, F. Lendzian, W. Lubitz, M.L. Paddock, E.C. Abresch, R.A. Isaacson, M.Y. Okamura and G. Feher. (22nd International EPR Symposium at the 41st Rocky Mountain Conference, in Denver, CO, Aug. 1-5, 1999).

233. Identification of the Proton Pathway in Rb.sphaeroides: Inhibition of Proton Transfer by Binding of Divalent Metals; M.L. Paddock, G. Feher, M.Y. Okamura; Biophys. J. (Abstracts) 78, A337 (2000). (44th Annual Meeting of the Biophysical Society, in New Orleans, LA, February 12-16, 2000).

234. Mutation of Asp-M17 and Asp-L210 blocks proton transfer in bacterial RCs of Rb. sphaeroides; M.L. Paddock, G. Feher, M.Y. Okamura; Biophys. J. (Abstracts) 78, A337 (2000). (44th Annual Meeting of the Biophysical Society, in New Orleans, LA, February 12-16, 2000).

235. X-Ray Crystal Structure Determination of the Binding Sites of the Proton Transfer Inhibitors Cd2+, Zn2+, and Ni2+; H.L. Axelrod, E.C. Abresch, M.L. Paddock, M.Y. Okamura, and G. Feher; Biophys. J. (Abstracts), 78, A337 (2000). (44th Annual Meeting of the Biophysical Society, in New Orleans, LA, February 12-16, 2000).

236. Simultaneous replacement of His-H126 and His-H118 with Ala drastically reduces the binding of Cd2+ & Ni2+ to bacterial RCs of Rhodobacter sphaeroides. J.T. Beatty, M.L. Paddock, G. Feher, M.Y. Okamura; Biophys. J. (Abstracts) 78, A339 (2000). (44th Annual Meeting of the Biophysical Society, in New Orleans, LA, February 12-16, 2000).

237. Identification of Endor Lines in QA- and QB-  in RCs of Rb. sphaeroides by Selective Isotopic Labeling; R. Isaacson, F. Lendzian, M. Stein, W. Lubitz, C. Boullais, E.C. Abresch, and G. Feher; Biophys. J. (Abstracts), 78, A339 (2000). (44th Annual Meeting of the Biophysical Society, in New Orleans, LA, February 12-16, 2000).

238. Asp-L210 and Asp-M17 Provide Parallel Paths in the Proton Transfer to Reduced QB; M.L. Paddock, C. Chang, E.C. Abresch, G. Feher, M.Y. Okamura; Biophys. J. (Abstracts), 80, A28 (2001). (45th Annual Meeting of the Biophysical Society, in Boston, MA, February 17-21, 2001).

239. EPR Study of the Semiquinone Biradical QA-.QB-.  in Photosynthetic Reaction Centers of Rb. Sphaeroides at 326 GHz; R. Calvo, R.A. Isaacson, E.C. Abresch, M.L. Paddock, A-L. Maniero, C. Saylor, L-C. Brunel, M.Y. Okamura, G. Feher; Biophys. J. (Abstracts), 80, A29 (2001). (45th Annual Meeting of the Biophysical Society, in Boston, MA, February 17-21, 2001).

240. Chemical Rescue of Inhibited Proton Transfer in His-H126→Ala/His-H128→Ala Mutant Reaction Centers Shows that the His are Proton Donors; P. Ädelroth, M.L. Paddock, J.T. Beatty, G. Feher, M.Y. Okamura; Biophys. J. (Abstracts), 80, A427 (2001). (45th Annual Meeting of the Biophysical Society, in Boston, MA, February 17-21, 2001).

241. Binding of Cd2+ or Ni2+ to the Reaction Center Displaces a proton; L. Sagle, M.L. Paddock, G. Feher, M.Y. Okamura; Biophys. J. (Abstracts), 82, A196 (2002). (46th Annual Meeting of the Biophysical Society in San Francisco, CA, February 23-27, 2002).

242. Chemical Rescue of Inhibited proton Transfer in His-H126→Asn/His-H128→Asn/Asp-H124→Asp Mutant Reaction Centers; J.T. Beatty, P. Ädelroth, M.L. Paddock, M. Yang, G. Feher, M.Y. Okamura; Biophys. J. (Abstracts), 82, A196 (2002). (46th Annual Meeting of the Biophysical Society in San Francisco, CA, February 23-27, 2002).

243. The PKa of the Surface Imidazole Group Associated with Proton Transfer in the RC from Rb. sphaeroides, P. Ädelroth, M.L. Paddock, J.T. Beatty, G. Feher, M.Y. Okamura; Biophys. J. (Abstracts), 82, A197 (2002). (46th Annual Meeting of the Biophysical Society in San Francisco, CA, February 23-27, 2002).

244. The Importance for Cyt c2 Docking of a Cation-Interaction between ARGC32 of Cyt c2 and TYRM295 of the Reaction Center from Rb. sphaeroides; K. Weber, H.L. Axelrod, M.L. Paddock, J. McCoy, G. Feher, M.Y. Okamura; Biophys. J. (Abstracts), 82, A290 (2002). (46th Annual Meeting of the Biophysical Society in San Francisco, CA, February 23-27, 2002).

245. Hydrogen Bonds to Quinone Anion Radicals Studied by 2H ENDOR Spectroscopy and Density Functional Calculations; W. Lubitz, R. Isaacson, M. Flores, S. Sinnecker, F. Lendzian, G. Feher; Biophys. J. (Abstracts), 82, A478 (2002). (46th Annual Meeting of the Biophysical Society in San Francisco, CA, February 23-27, 2002).

246. Characterization of Hydrogen Bonds to  in Reaction Centers of Rb. sphaeroides R-26 by Deuterium ENDOR; M. Flores, E. Abresch, W. Lubitz, R. Isaacson, G. Feher; Biophys. J. (Abstracts), 82, A478 (2002). (46th Annual Meeting of the Biophysical Society in San Francisco, CA, February 23-27, 2002).

247. The Rate Constant for Proton Transfer from the Surface Imidazole to Glu-L212 in the RC; M.L. Paddock, P. Ädelroth, T. Beatty, G. Feher, M.Y. Okamura; Biophys. J. (Abstracts), 82, A517 (2002). (46th Annual Meeting of the Biophysical Society in San Francisco, CA, February 23-27, 2002).

248. Determination of the Number of Exchangeable Protons in Hydrogen Bonds to Benzosemiquinone by EPR Spectroscopy; M. Flores, R. Isaacson, W. Lubitz, G. Feher; Biophys. J. (Abstracts), 84, A120 (2003). (47th Annual Meeting of the Biophysical Society in San Antonio, TX, March 1-5, 2003).

249. Interactions between Cytochrome c2 and the Photosynthetic Reaction Center from Rb. sphaeroides: The Effects of Replacing Hydrophobic Residues Leu-M191 or Val-M192 with Ala or Ser; X.-M. Gong, M.L. Paddock, C. Chang, G. Feher, M. Okamura; Biophys. J. (Abstracts), 84, A150 (2003). (47th Annual Meeting of the Biophysical Society in San Antonio, TX, March 1-5, 2003).

250. Reaction Center Structures of Two Photosynthetic Revertants Suggest Altered Proton Transfer Pathways; Q. Xu, E.C. Abresch, H.L. Axelrod, M.L. Paddock, M.Y. Okamura, G. Feher; Biophys. J. (Abstracts), 84, A273-4 (2003). (47th Annual Meeting of the Biophysical Society in San Antonio, TX, March 1-5, 2003).

251. Entry Point for Proton Transfer in Photosynthetic Revertants of the Bacterial RC is the Same as in the Native RC; M.L. Paddock, Q. Xu, G. Feher, M. Okamura; Biophys. J. (Abstracts), 84, A274 (2003). (47th Annual Meeting of the Biophysical Society in San Antonio, TX, March 1-5, 2003).

252. Interactions between Cytochrome and the Photosynthetic Reaction Center: Differences between Horse Heart Cytochrome c and Rb. sphaeroides Cytochrome c2; X.-M. Gong, M. Paddock, K. Weber, C. Chang, G. Feher, M. Okamura; Biophys. J. (Abstracts), 84, A454 (2003). (47th Annual Meeting of the Biophysical Society in San Antonio, TX, March 1-5, 2003).

253. A Cation-π Interaction between Cytochrome c2 and the Photosynthetic Reaction Center from Rhodobacter sphaeroides; K.H. Weber, M.L. Paddock, H. Axelrod, C. Change, X.-M. Gong, G. Feher, M.Y. Okamura; Biophys. J. (Abstracts), 84, A454 (2003). (47th Annual Meeting of the Biophysical Society in San Antonio, TX, March 1-5, 2003).

 

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