title: Cloning and nucleotide sequence of the structural gene coding for Bacillus subtilis tryptophanyl-tRNA synthetase.
abstract: A 1.47-kb DNA fragment that carries the tryptophanyl-tRNA synthetase (TrpRS) gene of Bacillus subtilis has been cloned into the pUC8 plasmid. The recombinant plasmid, pTSQ2, conferred temperature-resistance to the temperature-sensitive trpS ts mutant of B. subtilis through chromosomal transformation, and to that of Escherichia coli through complementation. The pTSQ2 could be stably maintained in E. coli DH5 alpha, causing in the host cell a 200-fold amplification of TrpRS activity. The complete nucleotide sequence of the cloned fragment has been determined. A putative transcriptional promoter, a Shine-Dalgarno sequence, the 990-bp trpS gene proper, as well as a transcriptional terminator have been identified.
authors.affiliation: Department of Biochemistry, University of Toronto, Ont., Canada.
authors.forename: K C
authors.initials: KC
authors.lastname: Chow
authors.forename: J T
authors.initials: JT
authors.lastname: Wong
mesh_terms: D000595:Amino Acid Sequence; D000604:Amino Acyl-tRNA Synthetases / Q000235:genetics*; D001412:Bacillus subtilis / Q000201:enzymology / Q000235:genetics*; D001483:Base Sequence; D003001:Cloning, Molecular; D004274:DNA, Recombinant / Q000378:metabolism; D005796:Genes; D005798:Genes, Bacterial; D008969:Molecular Sequence Data; D010957:Plasmids; D015183:Restriction Mapping; D012689:Sequence Homology, Nucleic Acid; D014369:Tryptophan-tRNA Ligase / Q000235:genetics*
chemical_list: D004274:DNA, Recombinant; D000604:Amino Acyl-tRNA Synthetases; D014369:Tryptophan-tRNA Ligase