title: Nucleotide sequence of the plasminogen activator gene of Yersinia pestis: relationship to ompT of Escherichia coli and gene E of Salmonella typhimurium.
abstract: We have determined the nucleotide sequence of the 1.4-kilobase DNA fragment containing the plasminogen activator gene (pla) of Yersinia pestis, which determines both plasminogen activator and coagulase activities of the species. The sequence revealed the presence of a 936-base-pair open reading frame that constitutes the pla gene. This reading frame encodes a 312-amino-acid protein of 34.6 kilodaltons and containing a putative 20-amino-acid signal sequence. The presence of a single large open reading frame is consistent with our previous conclusion that the two Pla proteins which appear in the outer membrane of pla+ Y. pestis are derived from a common precursor. The deduced amino acid sequence of Pla revealed that it possesses a high degree of homology to the products of gene E of Salmonella typhimurium and ompT of Escherichia coli but does not possess significant homology to other plasminogen activators of known sequence. We also identified a transcription unit that resides on the complimentary strand and overlaps the pla gene.
authors.affiliation: Department of Molecular Genetics and Microbiology, University of Massachusetts Medical School, Worcester 01655.
authors.forename: O A
authors.initials: OA
authors.lastname: Sodeinde
authors.forename: J D
authors.initials: JD
authors.lastname: Goguen
mesh_terms: D000595:Amino Acid Sequence; D001425:Bacterial Outer Membrane Proteins / Q000235:genetics*; D001483:Base Sequence; D005075:Biological Evolution; D004926:Escherichia coli / Q000235:genetics*; D005796:Genes; D005798:Genes, Bacterial; D005807:Genes, Overlapping; D008969:Molecular Sequence Data; D010960:Plasminogen Activators / Q000235:genetics*; D015183:Restriction Mapping; D012486:Salmonella typhimurium / Q000235:genetics*; D015010:Yersinia pestis / Q000235:genetics*
chemical_list: D001425:Bacterial Outer Membrane Proteins; D010960:Plasminogen Activators