The uptake of C14 of carboxyl-labeled glycine into the protein of Torula utilis.

Protein synthesis in living tissues has been studied recently by several investigators. The uptake by liver slices of radio-sulfur administered as methionine and labeled with S8' was demonstrated by Melchoir and Tarver (1947). That the process was aerobic was shown by Franz, Loftfield, and Miller (1947), and that the azide ion was inhibitory was shown by Winnick, Friedberg, and Greenberg (1947). The desirability of using microorganisms in studies of this sort was suggested by Melchoir, Mellody, and Klotz (1948), who demonstrated that