Chymotrypsinogen: Increased Resolution and Absolute Configuration.

* Research carried out at Brookhaven National Laboratory under the auspices of the U.S. Atomic Energy Commission. 1 Tissibres, A., J. D. Watson, D. Schlessinger, and B. R. Hollingworth, J. Mol. Biol., 1, 221 (1959). 2 Zubay, G., in Recent Progress in Microbiology (Montreal: University of Toronto Press, 1962), p. 65. 3 Gilbert, W., J. Mol. Biol., 6, 374 (1963). 4 Nirenberg, M. W., and J. H. Matthaei, these PROCEEDINGS, 47, 1588 (1961). 5 Brenner, S., F. Jacob, and M. Meselson, Nature, 190, 576 (1961). 6 Gros, F., H. Hiatt, W. Gilbert, C. G. Kurland, R. W. Risebrough, and J. D. Watson, Nature, 190, 581 (1961). 7 Takanami, M., and T. Okamoto, J. Mol. Biol., 7, 323 (1963). 8 Warner, J. R., A. Rich, and C. E. Hall, Science, 138, 1399 (1962). 9Littauer, V. Z., and A. Kornberg, J. Biol. Chem., 227, 1077 (1957). 10 Singer, M. F., and J. K. Guss, J. Biol. Chem., 237, 182 (1962). Nomura, M., B. D. Hall, and S. Spiegelman, J. Mol. Biol., 2, 306 (1960). 12Marcus, L., R. K. Bretthauer, R. M. Bock, and H. 0. Halvorson, these PROCEEDINGS, 50, 782 (1963). 13Jones, 0. W., E. E. Townsend, H. A. Sober, and L. A. Heppel, Biochemistry, 3, 238 (1964). 14 Zubay, G., Science, 140, 1092 (1963). 15Huxley, H. E., and G. Zubay, J. Mol. Biol., 2, 10 (1960). 16Barondes, S. H., and M. W. Nirenberg, Science, 138, 813 (1962). 17 Okamoto, T., and M. Takanami, Biochim. Biophys. Acta, 76, 266 (1963). 18Fresco, J. R., and E. Klemperer, Ann. N.Y. Acad. Sci., 81, 739 (1959).