PHOTOSYNTHETIC PHOSPHORYLATION AND MOLECULAR OXYGEN

The authors wish to thank Mrs. Juanita Cooke for her expert assistance in many of these experiments. * Present address: Massachusetts General Hospital, Boston 14, Massachusetts. t On leave of absence from The Weizmann Institute of Science, Rehovoth, Israel. 1 Sela, M., F. H. White, Jr., and C. B. Anfinsen, Biochim. et Biophys. Acta, 31, 417 (1959). 2 White, F. H., Jr., J. Biol. Chem., 236, 1353 (1961). 3Anfinsen, C. B., and E. Haber, ibid., 236, 1361 (1961). 4Aqvist, S. E. G., and C. B. Anfinsen, ibid., 234, 1112 (1959). 6 Peterson, E. A., and H. A. Sober, J. Am. Chem. Soc., 78, 751 (1956)-. 6 Hirs, C. H. W., S. Moore, and W. H. Stein, J. Biol. Chem., 200, 493 (1953). 7 Spackman, D. H., W. H. Stein, and S. Moore, Anal. Chem., 30, 1190 (1958). 8 Anfinsen, C. B., R. R. Redfield, W. L. Choate, J. Page, and W. R. Carroll, J. Biol. Chem., 207, 201 (1954). 9 Crestfield, A. M., Smith, K. C., and F. W. Allen, ibid., 216, 185 (1956). 10 Richards, F. M., Compt. rend. trav. lIb. Carlsberg, Ser. Chim., 29, 315 (1955). 11 Boyer, P. D., J. Am. Chem. Soc., 76, 4331 (1954). 12 Bray, G. A., Anal. Biochem., 1, 279 (1960). 13 Sela, M., and C. B. Anfinsen, Biochim. et Biophys. Acta, 24, 229 (1957). 14 Sela, M., C. B. Anfinsen, and W. F. Harrington, ibid., 26, 502 (1957). Haber, E., M. Sela, and C. B. Anfinsen, Federation Proc., 20, Part I, 217 (1961). 16 Experimental work is now in progress to determine the nature of the pairing of half-cystine residues at various times during the early stages of reoxidation. Preliminary results indicate that pairing is quite random and that "incorrectly" formed bonds are present. 17 Harrington, W. F., and J. A. Schellman, Compt. rend. trav. lib. Carlsberg, Ser. Chim., 30, 21 (1956).