Nanaomycin H: A new nanaomycin analog

Takuji Nakashima*, Toru Kimura, Rei Miyano, Hirotaka Matsuo, Tomoyasu Hirose, Aoi Kimishima, Kenichi Nonaka, Masato Iwatsuki, Jun Nakanishi, Yōko Takahashi, Satoshi Ōmura


研究成果: Article査読

7 被引用数 (Scopus)


Physicochemical screening identified a new nanaomycin analog, nanaomycin H, which was isolated from a culture broth of Streptomyces rosa subsp. notoensis OS-3966. This microorganism is already known to produce seven nanaomycin compounds, (nanaomycin A to G). Structural elucidation of nanaomycin H showed it to be a pyranonaphthoquinone with a mycothiol moiety. A N-acetylcysteine S-conjugate of nanaomycin H, without α-glucosamine linked to myo-inositol moiety, mercapturic acid derivative, was also detected in the same culture broth. Mercapturic acid derivatives of secondary metabolites are known to be produced for xenobiotic metabolism outside microbial cells. Mycothiol acts as a detoxifier to help prevent cell damage from factors such as oxidative stress. The production of O2[rad] generated by reduction of nanaomycin A is correlated with antibacterial activity. Mycothiol-containing nanaomycin H proved to be markedly decreased in O2[rad] and did not express any notable antimicrobial activity. It is suggested that nanaomycin H is produced in the detoxification process.

ジャーナルJournal of Bioscience and Bioengineering
出版ステータスPublished - 2017 6月

ASJC Scopus subject areas

  • バイオテクノロジー
  • バイオエンジニアリング
  • 応用微生物学とバイオテクノロジー


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