Relationship between Ci 4 - L - Phenylalanine Incorporated and Polyuridylic Acid Present

I The abbreviations used in this report are: TMG, thiomethyl3-d-galactopyranoside; Tris, tris-(hydroxymethyl)-aminomethane; ATP, adenosine triphosphate; ADP, adenosine diphosphate; UDP, GDP, CDP, UTP, GTP, CTP, diand triphosphates of uridine, guanine, and cytidine; TCA, trichloroacetic acid; RNase, ribonuclease; 1)Nase, deoxyribonuclease; cpm, counts per minute; DNA, deoxyribonucleic acid; CP, chloramphenicol. 8 Wallenfels, K., and A. Arens, Biochem. Z., 332, 247 (1960). 9 Lederberg, J., J. Bacteriol., 60, 381 (1950). 10Siekevitz, P., J. Biol. Chem., 195, 549 (1952). 11 Lowry, 0. H., N. J. Rosebrough, A. L. Faar, and R. J. Randall, J. Biol. Chem., 193, 265 (1951). 12 Kameyama, T., and G. D. Novelli, Arch. Biochem. Biophys., in press. 13 Noda, L., S. Kuby, and H. Lardy, in Methods of Enzymology, ed. S. P. Colowick and N. 0. Kaplan (New York: Academic Press, 1955), vol. 2, pp. 605-610. 4 Nisman, B., and H. Fukuhara, Compt. rend., 250, 410 (1960). 15 Tissieres, A., D. Schlessinger, and F. Gros, these PROCEEDINGS, 46, 1450 (1960). 16 Matthaei, J. H., and M. W. Nirenberg, Federation Proc., 20, 391 (1961). 17 Allfrey, V. (I., and A. E. Mirsky, these PROCEEDINGS, 44, 981 (1958). 18 Eisenstadt, J. M., T. Kameyama, and G. D. Novelli, these PROCEEDINGS, 48, 652 (1962).