Adenosine triphosphate consumption by bacterial arginyl-transfer ribonucleic acid synthetases

Autor: J Charlier, J M Godeau
Rok vydání: 1979
Předmět:
Zdroj: Biochemical Journal. 179:407-412
ISSN: 0264-6021
DOI: 10.1042/bj1790407
Popis: ATP consumption by arginyl-tRNA synthetases from Escherichia coli and Bacillus stearothermophilus has been investigated by the firefly luciferin–luciferase assay. Arginyl-tRNA synthetase from E. coli utilizes ATP only for aminocylation of tRNA with a 1:1 stoicheiometry. In contrast, we have shown an adenosine triphosphatase activity of arginyl-tRNA synthetase from B. stearothermophilus in the absence of tRNAArg. Dowex chromatography revealed the formation of ADP by the thermophile enzyme; under aminoacylation conditions, AMP was also formed in amounts stoicheiometric with arginyl-tRNA formation.
Databáze: OpenAIRE