Molybdophyllysin, a toxic metalloendopeptidase from the tropical toadstool, Chlorophyllum molybdites

Mina Yamada, Naoko Tokumitsu, Yoko Saikawa, Masaya Nakata, Junpei Asano, Kazuo Miyairi, Toshikatsu Okuno, Katsuhiro Konno, Kimiko Hashimoto

研究成果: Article査読

6 被引用数 (Scopus)


A toxic protein, dubbed molybdophyllysin, was isolated from the tropical toadstool Chlorophyllum molybdites by following its lethal effect in mice. Analysis of the protein using SDS-PAGE revealed a single 23-kDa band. Sequence analysis of molybdophyllysin tryptic fragments showed that this protein is highly homologous to metalloendopeptidases (MEPs) obtained from edible mushrooms, such as Grifola frondosa, Pleurotus ostreatus, and Armillaria mellea. These proteins include a HEXXH+D zinc-binding motif known as aspzincin. Accordingly, molybdophyllysin is a member of the deuterolysin family of zinc proteases. Molybdophyllysin retained its proteolytic activity at temperatures up to 60 °C with an optimum pH of 7.0. The activity was inhibited by both 1,10-phenanthroline and N-bromosuccinimide, but molybdophyllysin exhibited strong resistance to SDS.

ジャーナルBioorganic and Medicinal Chemistry
出版ステータスPublished - 2012 11 15

ASJC Scopus subject areas

  • 生化学
  • 分子医療
  • 分子生物学
  • 薬科学
  • 創薬
  • 臨床生化学
  • 有機化学


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