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Characterization of Aminoacyl Transfer Ribonucleic Acid Formation Stimulated by Polyamines

^a Department of Bacteriology and Serology, Research Institute for Microbial Diseases, Osaka University, Yamada-kami, Suita, Osaka, Japan

ABSTRACT

From a comparative study of aminoacyl transfer ribonucleic acid (tRNA) formation stimulated by polyamines or by Mg²⁺, it is shown that both reactions have the same requirements for adenosine triphosphate, tRNA, and aminoacyl-tRNA synthetase. Reaction kinetics are similar in both reactions. The same tRNA is aminoacylated in the presence of either spermine of Mg²⁺. Aminoacyl-tRNA formed in the presence of polyamines can be a donor of amino acids in polypeptide synthesis.

¹ Present address: Faculty of Pharmaceutical Sciences, Chiba University, Chiba, Japan.