Roger Isaacson Publications 1980-current: [Back to home page]
24. Coaxial Coupler for a 9 GHz EPR/ENDOR Cryostat; Isaacson, R. A., Lulich, C., Oseroff, S. B., and Calvo, R.; Review of Scientific Instruments 51, 1409-1411 (1980).
25. Q-band (35 GHz) EPR spectroscopy of electron spin polarization of the primary acceptor ubiquinone in Rhodopseudomonas sphaeroides and in perdeuterated Rhodospirillum rubrum; A. J. Hoff, P. Gast, R. A. Isaacson, and G. Feher; Photosynthesis III. Structure and Molecular Organization of the Photosynthetic Apparatus (ed. George Akoyunoglou), Balaban Int'l. Sci. Servs., Phila. Pa. 1981, pp. 1023-1029. (Conference was entitled 5th International Photosynthesis Congress, held in Kassandra-Halkidiki, Greece, September 7-13, 1980).
26. Electron nuclear double resonance (ENDOR) from heme and histidine nitrogens in single crystals of aquometmyoglobin; C. P. Scholes, Aviva Lapidot, Rita Mascarenhas, T. Inubushi, R. A. Isaacson, and G. Feher; J. Am. Chem. Soc. 104, 2724-2735 (1982).
27. Reaction of Nitric Oxide with Heme Proteins: Studies on Metmyoglobin, Opossum Methemoglobin, and Microperoxidase; Sharma, V. S., Isaacson, R. A., John, M. E., Waterman, M. R., and Chevion, M.; Biochemistry 22, 3897-3902 (1983).
28. The electronic structure of Fe2+ in reaction centers from Rhodopseudomonas sphaeroides III. EPR measurements of the reduced acceptor complex; W. F. Butler, R. Calvo, D. R. Fredkin, R. A. Isaacson, M. Y. Okamura, and G. Feher; Biophysical J.,45, 947-973 (May 1984).
29. 15 N ENDOR of the primary donor cation radical P865+ in reaction centers of Rhodopseudomonas sphaeroides. Additional evidence for the dimer model; W. Lubitz, R. A. Isaacson, E. C. Abresch and G. Feher. Proc. Natl. Acad. Sci. 81, 7792-7796 (1984).
30. Electron Nuclear Double Resonance of Semiquinones in Reaction Centers of Rhodopseudomonas sphaeroides; W. Lubitz, E. C. Abresch, R. J. Debus, R. A. Isaacson, M. Y. Okamura, and G. Feher, Biochim. Biophys. Acta. 808, 464-469 (1985).
31. ENDOR of Semiquinones in Reaction Centers from Rhodopseudomonas sphaeroides; G. Feher, R. A. Isaacson, M. Y. Okamura, and W. Lubitz (1985); in Antennas and Reaction Centers of Photosynthetic Bacteria - Structure, Interactions and Dynamics, Michel-Beyerle, Ed., Springer-Verlag, Berlin, pp. 174-189.
32. Evidence of the Primary Charge Separation in the D1D2 Complex of Photosystem II from Spinach: EPR of the Triplet State; M. Y. Okamura, K. Satoh, R. A. Isaacson and G. Feher; Progress in Photosynthesis Research, Vol. 1, pp. I.4.379-I.4.381 (Proceedings of the VIIth International Conference on Photosynthesis, Brown University, August 1986, Ed. J. Biggins), Martinus Nijhoff, Boston, 1987.
33. ENDOR of Exchangeable Protons of the Reduced Intermediate Acceptor in Reaction Centers from Rhodobacter sphaeroides R-26; G. Feher, R. A. Isaacson, M. Y. Okamura, W. Lubitz (1988); in The Photosynthetic Bacterial Reaction Center, Jacques Breton and Andre Vermeglio, editors; Plenum Press, Publishers, pp. 229-235. (Presented at the Conference on Structure of the Photosynthetic Bacterial Reaction Center, in Cadarache, France, September 1987.)
34. ENDOR studies of the Intermediate Electron Acceptor Radical Anion I - in Photosystem II Reaction Centers; W. Lubitz, R. A. Isaacson, M. Y. Okamura, E. C. Abresch, M. Plato and G. Feher; Biochim. Biophys. Acta , 977, 227-232 (1989).
35. ENDOR Studies of the Intermediate Electron Acceptor Radical Anion I -· in Reaction Centers of Rps. Viridis ; W. Lubitz, B. Bonigk, M. Plato, R. A. Isaacson, M. Y. Okamura and G. Feher; in Current Research in Photosynthesis, Vol. I, pp. I.1.141-I.1.144 (Proceedings of the VIIIth International Conference on Photosynthesis, Stockholm, Sweden, August l989, Ed. M. Baltscheffsky), Kluwer Academic Publishers, Dordrecht, 1990.
36. EPR Investigation of Photosynthetic Reaction Centers from Rb. Sphaeroides R-26 in which Fe2+ was Replaced by Cu2+:Determination of Hyperfine Interactions and Exchange and Dipole-Dipole Interactions Between Cu2+ and Q-A- ; R. Calvo, M. C. G. Passeggi, R. A. Isaacson, M. Y. Okamura and G. Feher; Biophysical J., 58, 149-165 (1990).
37. EPR and ENDOR Studies of the Oxidized Primary Donor in Single Crystals of Reaction Centers of Rhodobacter sphaeroides R-26; E. J. Lous, M. Huber, R. A. Isaacson and G. Feher (1990); in Reaction Centers of Photosynthetic Bacteria, M.-E. Michel-Beyerle, ed.; Springer-Verlag, Berlin Heidelberg, pp. 45-55.
38. EPR and ENDOR Studies of the Oxidized Donor in Reaction Centers of Rhodobacter sphaeroides Strain R-26 and two Heterodimer Mutants in which Histidine M202 or L173 was Replaced by Leucine; M. Huber, E. J. Lous, R. A. Isaacson, G. Feher, D. Gaul and C. C. Schenck (1990); in Reaction Centers of Photosynthetic Bacteria, M.-E. Michel-Beyerle, ed.; Springer-Verlag, Berlin Heidelberg, pp. 219-228.
39. The Electronic Structure of the Primary Donor Cation Radical in Rhodobacter sphaeroides R-26: ENDOR and TRIPLE Resonance Studies in Single Crystals of Reaction Centers; F. Lendzian, M. Huber, R.A. Isaacson, B. Endeward, M. Plato, B. Bönigk, K. Möbius, W. Lubitz and G. Feher; Biochim. Biophys. Acta 1183, 139-160 (1993).
40. Electronic Structure of QA-· in Reaction Centers from Rb. Sphaeroides: I. EPR in Single Crystals; R. A. Isaacson, F. Lendzian, E. C. Abresch, W. Lubitz and G. Feher; Biophys. J., 69, 311-322 (1995).
41. Electronic Structure of the Oxidized Primary Electron Donor of the HL (M202) and HL (L173) Heterodimer Mutants of the Photosynthetic Bacterium Rhodobacter sphaeroides: ENDOR on Single Crystals of Reaction Centers; M. Huber, R. A. Isaacson, E. C. Abresch, D. Gaul, C. C. Schenck, G. Feher; Biochim. Biophys. Acta, 1273, 108-128 (1996).
42. Asymmetry of the Binding Sites of QA-· and QB-· in Reaction Centers of Rb. sphaeroides Probed by Q-Band EPR with 13C-Labeled Quinones; R. A. Isaacson, E. C. Abresch, F. Lendzian, C. Boullais, M. L. Paddock, C. Mioskowski, W. Lubitz and G. Feher; in Structure and Dynamics, M. E. Beyerle, editor, (Springer-Verlag, Berlin) pp 353-368 (Presented at Feldafing Meeting, March 1-4, 1995, Feldafing, Germany).
43. Co-Crystallization and Characterization of the Photosynthetic Reaction Center-Cytochrome c2 Complex from Rhodobacter sphaeroides; N. Adir, H. L. Axelrod, P. Beroza, R. A. Isaacson, S. H. Rongey, M. Y. Okamura and G. Feher; Biochemistry 35 2535-2547 (1996).
44. EPR Study of the Molecular and Electronic Stucture of the Semiquinone Biradical QA-· QB-· in Photosynthetic Reaction Centers from Rb. sphaeroides; R. Calvo, E.C. Abresch, R. Bittl, G. Feher, W. Hofbauer, R.A. Isaacson, W. Lubitz, M.Y. Okamura, and M.L. Paddock; J. Am. Chem. Soc. 122, 7327-7341 (2000).
45. EPR Study of the Semiquinone Biradical QA-· QB-· in Photosynthetic Reaction Centers from Rb. Sphaeroides at 326 GHz: Determination of the Exchange Interaction J0; R. Calvo, R. Isaacson, M.L. Paddock, E.C. Abresch, M.Y. Okamura, A.-L. Maniero, L.-C. Brunel and G. Feher; Journal of Physical Chemistry B, 105, 4053-4057 (2001).
46. EPR
Study of Electronic Properties and Weak Exchange Interactions in Bis(L-phenylalaninamidato)Cu(II); Nieves M. C. Casado, Roger A. Isaacson,
Rafael Calvo; Journal of Inorganic Biochemistry, 84, 201-206
(2001)
47. Spin-lattice relaxation of coupled metal-radical spin-dimers in proteins: application to Fe2+-cofactor (QA-·, QB-·, f-·) dimers in reaction centers from photosynthetic bacteria; R. Calvo, R.A. Isaacson, E.C. Abresch, M.Y. Okamura, G. Feher; Biophys. J. 83, 2440-2456 (2002).
48. EPR spectroscopic detection of free radical outflow from an isolated muscle bed in exercising humans; Bailey D.M., Davies B., Young I.S., Jackson M.J., Davison G.W., Isaacson R., Richardson R.S. J. Appl. Physiol. 94, 1714-1718 (2003)
49. Probing Hydrogen Bonding to Quinone Anion Radicals by 1H and 2H ENDOR Spectroscopy at 35 GHz; M. Flores, R.A. Isaacson, R. Calvo, G. Feher, W. Lubitz; Chemical Physics, (in press 2003).
Last revised 19 May 03