Changes in levels of amino acid acceptors in tRNA from Escherichia coli grown under various conditions.

Amino Acyl-tRNA Synthetases/metabolism Aminobutyrates Carbon Radioisotopes Chromatography, DEAE-Cellulose Densitometry Electrophoresis, Polyacrylamide Gel Escherichia coli/enzymology,metabolism Fluorine Mutation Organophosphonates Phenylalanine RNA, Bacterial/isolation & purification,metabolism RNA, Transfer/isolation & purification,metabolism Spectrophotometry, Ultraviolet Temperature Threonine Time Factors Transfer RNA Aminoacylation Tyrosine Valine

Aminobutyrates Carbon Radioisotopes Organophosphonates RNA, Bacterial Fluorine Threonine Tyrosine Phenylalanine RNA, Transfer Amino Acyl-tRNA Synthetases Valine