title: Cloning and amplified expression of the tyrosyl-tRNA synthetase genes of Bacillus stearothermophilus and Escherichia coli.
abstract: Two fragments of DNA which carry the genes coding for the tyrosyl-tRNA synthetases of Escherichia coli and Bacillus stearothermophilus have been cloned into the plasmid pBR322 and were selected by complementation of an E. coli temperature-sensitive mutant. Transformation of this strain with either of the recombinant plasmids results in a 100-fold increase in tyrosyl-tRNA synthetase activity measured in vitro and the protein products co-migrate with the corresponding purified enzymes on polyacrylamide gels.
mesh_terms: D000604:Amino Acyl-tRNA Synthetases / Q000235:genetics*; D003001:Cloning, Molecular; D004926:Escherichia coli / Q000201:enzymology* / Q000235:genetics; D005798:Genes, Bacterial; D001411:Geobacillus stearothermophilus / Q000201:enzymology* / Q000235:genetics; D014169:Transformation, Bacterial; D014448:Tyrosine-tRNA Ligase / Q000235:genetics*
chemical_list: D000604:Amino Acyl-tRNA Synthetases; D014448:Tyrosine-tRNA Ligase