The hemagglutinating action of Vibrio vulnificus metalloprotease

Shin-ichi Miyoshi, Koji Kawata, Ken Ichi Tomochika, Sumio Shinoda

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Abstract

Vibrio vulnificus protease (VVP), a 45-kDa zinc metalloprotease, consists of two functional domains: an N-terminal 35-kDa polypeptide having endoproteinase activity, and a C-terminal 10-kDa polypeptide that mediates the binding of VVP to the erythrocyte membrane. Therefore, VVP, but not its N-terminal endoproteinase domain alone, has agglutinating activity to rabbit erythrocytes. When a single zinc atom in the catalytic center was substituted by treatment with CuCl2 or NiCl2, proteolytic and hemagglutinating activities were reduced by Ni substitution but not by Cu substitution. Cu- treated 35-kDa polypeptide showed sufficient affinity of the catalytic center and weak binding ability to the erythrocyte membrane, but the Ni-treated polypeptide did not. These results suggest that the binding of endoproteinase domain to membrane is also necessary for hemagglutination.

Original languageEnglish
Pages (from-to)79-82
Number of pages4
JournalMicrobiology and Immunology
Volume43
Issue number1
Publication statusPublished - 1999

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Keywords

  • Protease
  • Vibrio vulnificus

ASJC Scopus subject areas

  • Immunology and Microbiology(all)
  • Microbiology (medical)
  • Microbiology

Cite this

Miyoshi, S., Kawata, K., Tomochika, K. I., & Shinoda, S. (1999). The hemagglutinating action of Vibrio vulnificus metalloprotease. Microbiology and Immunology, 43(1), 79-82.