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- Yang, Hui; Chen, Jixiang; Yang, Guanpin; Zhang, Xiao-Hua; Li, Yun
- FEMS microbiology letters 2007 v.267 no.1 pp. 56-63
- Escherichia coli; Vibrio anguillarum; active sites; cytotoxicity; enzyme activity; flounder; genes; metalloproteinases; mutants; pathogenesis; pathogens; proteolysis; site-directed mutagenesis; virulence; zinc
- ... The extracellular zinc metalloprotease, EmpA, is a putative virulence factor involved in pathogenicity of the fish pathogen Vibrio anguillarum. The 611-amino acid precursor of this enzyme is encoded by the empA gene. The residues His³⁴⁶, His³⁵⁰, Glu³⁷⁰, Glu³⁴⁷, His⁴²⁹, Tyr³⁶¹ and Asp⁴¹⁷ are highly conserved and putatively function together at the active site of the enzyme. In this study, empA was ...
- Chatterji, Dipankar; Ogawa, Yoshito; Shimada, Tomohiro; Ishihama, Akira
- FEMS microbiology letters 2007 v.267 no.1 pp. 51-55
- messenger RNA; starvation; stress response; DNA microarrays; gene expression; ribosomal proteins; operon; DNA-directed RNA polymerase; Escherichia coli
- ... The rpoZ gene for the omega subunit of Escherichia coli RNA polymerase constitutes single operon with the spoT gene, which is responsible for the maintenance of stringent response under nutrient starvation conditions. To identify the physiological role of the omega subunit, we compared the gene expression profile of wild-type Escherichia coli with that of an rpoZ deleted strain by microarray analy ...