A heptaketide naphthaldehyde produced by a polyketide synthase from Nectria haematococca

Takayoshi Awakawa, Takuya Kaji, Toshiyuki Wakimoto, Ikuro Abe

研究成果: Article査読

17 被引用数 (Scopus)

抄録

Bostrycoidin and fusarubin are biologically active fungal polyketides produced by Nectria haematococca. This azaanthraquinone and naphthoquinone are thought to be biosynthesized via formation of a C 14 heptaketide aldehyde as a common key intermediate. A BLAST search against the genome of N. haematococca revealed one candidate gene (NECHADRAFT-101778, NhPKS1), which encodes a multi-domain polyketide synthase (PKS) with a thiol reductase (TR) domain that would facilitate the reductive release of the intermediate to produce a free aldehyde. To investigate the possible involvement of NhPKS1 in the biosynthesis of bostrycoidin and fusarubin, NhPKS1 was heterologously expressed in Aspergillus oryzae, and shown to produce a heptaketide 3-acetonyl-1,6,8-trihydroxy-2-naphthaldehyde as a single product. Thus, NhPKS1 catalyzes a C-2/C-11 and C-4/C-9 aldol-type cyclization of a linear intermediate followed by a subsequent reductive product release to yield the naphthaldehyde. The results indicate NhPKS1 is the enzyme involved in the biosynthesis of bostrycoidin and fusarubin.

本文言語English
ページ(範囲)4338-4340
ページ数3
ジャーナルBioorganic and Medicinal Chemistry Letters
22
13
DOI
出版ステータスPublished - 2012 7 1
外部発表はい

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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