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Shi, Yuanyuan; Wang, Xinwei; He, Ning; Xie, Yunying; Hong, Bin
Journal of antibiotics, 10/2019, Letnik: 72, Številka: 10Journal Article
A novel sansanmycin analogue, sansanmycin Q (1), was identified by genome mining from the fermentation broth of Streptomyces sp. SS (CPCC 200442). In comparison with other sansanmycin compounds, sansanmycin Q has an extra glycine residue at the N-terminus of the pseudopeptide backbone. The additional glycine was proved to be assembled to sansanmycin A by SsaB, a tRNA-dependent aminoacyltransferase, based on the results of rescrutiny of sansanmycin biosynthetic gene cluster, and then overexpression and knockout of ssaB in the wild-type strain. The structure of sansanmycin Q was assigned by interpretation of NMR and mass spectral data. The results of the bioassay disclosed that sansanmycin Q exhibited more potency against Mycobacterium tuberculosis H Rv and a rifampicin- and isoniazid-resistant strain than sansanmycin A.
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Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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