The identification and properties of chitin-binding protein b01 (CBPb01)

Masako Suzuki, Masami Morimatsu, Bunei Syuto

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


Bovine serum contains N-acetyl-D-glucosamine (GlcNAc)-sensitive opsonin inhibitory factors. In the present study, a major component of chitin-binding protein (chitin-binding protein b01, CBPb01) was purified from bovine serum, and identified CBPb01 as bovine IgM by its subunit structure, antigenic properties, and partial sequences. The results of a lectin-binding assay showed that the heavy chain of CBPb01 had a GlcNAc structure, but the commercial IgM did not. It is possible that CBPb01 interconnects through its GlcNAc structure, subsequently forming complexes. We also demonstrated that CBPb01 had opsonin-inhibitory activity, and that this activity was dependent on the binding of CBPb01 to GlcNAc on the zymosan surface. These findings indicate the presence of a kind of IgM that recognizes GlcNAc structure in the regulation of opsonization.

Original languageEnglish (US)
Pages (from-to)477-481
Number of pages5
JournalJournal of Veterinary Medical Science
Issue number6
StatePublished - Jun 2002
Externally publishedYes


  • Bovine serum
  • Chitin
  • GlcNAc
  • IgM
  • Opsonin-regulatory protein

ASJC Scopus subject areas

  • veterinary(all)


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