Comparison of the Multiple Agglutinins of the Acorn Barnacle, Megabalanus rosa

Koji Muramoto, Kyoko Ogata, Hisao Kamiya

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1 Citation (Scopus)


We investigated the subunit structures of the three agglutinins (BRA-1, BRA-2, and BRA-3) isolated from the coelomic fluid of the acorn barnacle, Megabalanus rosa, by high-speed gel filtration, gel electrophoresis, CD spectra, and peptide mapping. BRA-2 (Mr 140,000) and BRA-3 (Mr 64,000) were glycoproteins composed of subunits having two identical basic units cross-linked by disulfide bonds. The basic units of BRA-2 and BRA-3 had molecular weights of 22,000 and 18,000, respectively. They did not have a common structure. BRA-1 (Mr 330,000) was composed of subunits homologous to that of BRA-2. The binding properties of these agglutinins against rabbit erythrocyte ghosts were also investigated after labeling the agglutinins with fluorescein isothio-cyanate.

Original languageEnglish
Pages (from-to)85-93
Number of pages9
JournalAgricultural and Biological Chemistry
Issue number1
Publication statusPublished - 1985 Jan 1
Externally publishedYes

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)


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