title: Purification of a serine protease of Vibrio parahaemolyticus and its characterization.
abstract: A 50 kDa protease designated as VPP1 was purified from the culture supernatant of a clinical strain of Vibrio parahaemolyticus by ammonium sulfate fractionation, Sephacryl S-200 HR gel filtration and Fractogel EMD TMAE 650 ion-exchange chromatography. VPP1 was inhibited by EDTA, EGTA and serine protease inhibitors, suggesting that it is a calcium-dependent serine protease. N-terminal amino acid sequence of VPP1 was quite similar to that of V. metschnikovii protease and antibody against VPP1 inhibited the activity of V. metschnikovii protease, suggesting the similarity of the two proteases. It was demonstrated that VPP1 or its related protease widely distribute in not only V. parahaemolyticus but also V. alginolyticus.
authors.affiliation: Faculty of Pharmaceutical Sciences, Okayama University, Japan.
authors.forename: Masami
authors.initials: M
authors.lastname: Ishihara
authors.forename: Ayako
authors.initials: A
authors.lastname: Kawanishi
authors.forename: Hirofumi
authors.initials: H
authors.lastname: Watanabe
authors.forename: Ken-ichi
authors.initials: K
authors.lastname: Tomochika
authors.forename: Shin-ichi
authors.initials: S
authors.lastname: Miyoshi
authors.forename: Sumio
authors.initials: S
authors.lastname: Shinoda
mesh_terms: D004591:Electrophoresis, Polyacrylamide Gel; D020539:Sequence Analysis, Protein; D012697:Serine Endopeptidases / Q000737:chemistry / Q000302:isolation & purification* / Q000378:metabolism / Q000502:physiology; D014736:Vibrio parahaemolyticus / Q000201:enzymology* / Q000276:immunology / Q000472:pathogenicity; D014774:Virulence
chemical_list: D012697:Serine Endopeptidases