INCORPORATION IN VITRO OF LABELED AMINO ACIDS INTO PROTEINS OF RABBIT RETICULOCYTES

作者：Henry Borsook, Clara L. Deasy, Arie J. Haagen-Smit, Geoffrey Keighley, Peter H. Lowy · 发表于：Journal of Biological Chemistry · 年份：1952 · DOI：10.1016/s0021-9258(19)52400-0 · 被引用次数：255 · 研究领域：Hemoglobinopathies and Related Disorders、Metabolism and Genetic Disorders、Amino Acid Enzymes and Metabolism

Continuing our work on the incorporation of labeled amino acids into proteins (1), we have begun a study of the incorporation in vitro of C14-labeled glycine, L-histidine, L-leucine, and L-lysine into the proteins of rabbit reticulocytes. In preliminary experiments the incorporation into the hemoglobin isolated from the reticulocytes was determined. But, after it was found that plasma contains factors accelerating amino acid incorporation, it was decided to proceed as rapidly as possible toward the identification of these factors; we have, therefore, measured incorporation into the total proteins of the reticulocytes, since isolation of the hemoglobin was time-consuming. The results obtained with hemoglobin and with the total proteins are essentially the same, indicating that the other proteins of the reticulocytes incorporate amino acids at approximately the same rate as hemoglobin.