The gene for component-II of botulinum C2 toxin

Koichi Kimura, Toru Kubota, Iwao Ohishi, Emiko Isogai, Hiroshi Isogai, Nobuhiro Fujii

    Research output: Contribution to journalArticlepeer-review

    34 Citations (Scopus)


    The gene encoding component-II of the Clostridium botulinum C2 toxin was cloned from the chromosomal DNA of C. botulinum type C strain (C)-203U28, and the nucleotide sequence was determined. The gene (bc2h) encodes a protein with 721 amino acid residues and is located at 247 bp downstream of the gene for component-I. The N-terminal 16 amino acids were identical to those obtained by analysis of the purified component-II toxin. The ORF for bc2h had only 39% homology at the amino acid level with the C. perfringens iota-lb protein and an ATP/GTP binding site which is present in the iota-lb protein is missing from the protein encoded by bc2h. Both genes had a homologous region that predicts a transmembrane segment.

    Original languageEnglish
    Pages (from-to)27-34
    Number of pages8
    JournalVeterinary Microbiology
    Issue number1
    Publication statusPublished - 1998 Apr 30


    • Clostridium botulinum
    • Component-II
    • Gene cloning
    • Toxins

    ASJC Scopus subject areas

    • Microbiology
    • veterinary(all)


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