title: Formation of valyl- and isoleucyl-sRNA synthetases in a valine-requiring mutant of Escherichia coli.
mesh_terms: D004926:Escherichia coli / Q000201:enzymology* / Q000254:growth & development; D007532:Isoleucine / Q000494:pharmacology*; D007930:Leucine / Q000494:pharmacology; D008025:Ligases / Q000096:biosynthesis*; D014633:Valine / Q000494:pharmacology*
chemical_list: D007532:Isoleucine; D008025:Ligases; D007930:Leucine; D014633:Valine