Discovery of the lomaiviticin biosynthetic gene cluster in Salinispora pacifica.

Discovery of the lomaiviticin biosynthetic gene cluster in Salinispora pacifica.
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DOI:
10.1016/j.tet.2014.03.009
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发表时间:
2014-07-08
期刊:
影响因子:
2.1
通讯作者:
Balskus, Emily P.
Balskus, Emily P.
中科院分区:
化学3区
文献类型:
--
作者:
Janso, Jeffrey E.;Haltli, Brad A.;Eustaquio, Alessandra S.;Kulowski, Kerry;Waldman, Abraham J.;Zha, Li;Nakamura, Hitomi;Bernan, Valerie S.;He, Haiyin;Carter, Guy T.;Koehn, Frank E.;Balskus, Emily P.

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洛麦替星是一类具有细胞毒性的海洋天然产物,由于其复杂的分子骨架和有效的生物活性,引起了合成和生物化学家的关注。在这里,我们描述了鉴定的基因簇,负责洛梅替星生物合成的太平洋盐孢菌菌株DPJ-0016和DPJ-0019使用的分子方法和基因组测序的组合。lom基因簇和洛梅替星生产之间的联系使用细菌遗传学证实,并且随后对该簇的分析和注释揭示了核心聚酮化合物支架的生物合成基础。此外,我们已经使用比较基因组学来确定候选酶的几个不寻常的剪裁事件,包括重氮形成和氧化二聚化。这些发现将允许进一步阐明洛麦替星组装的生物合成逻辑,并为生物催化和合成生物学的应用提供有用的分子工具。
The lomaiviticins are a family of cytotoxic marine natural products that have captured the attention of both synthetic and biological chemists due to their intricate molecular scaffolds and potent biological activities. Here we describe the identification of the gene cluster responsible for lomaiviticin biosynthesis in Salinispora pacifica strains DPJ-0016 and DPJ-0019 using a combination of molecular approaches and genome sequencing. The link between the lom gene cluster and lomaiviticin production was confirmed using bacterial genetics, and subsequent analysis and annotation of this cluster revealed the biosynthetic basis for the core polyketide scaffold. Additionally, we have used comparative genomics to identify candidate enzymes for several unusual tailoring events, including diazo formation and oxidative dimerization. These findings will allow further elucidation of the biosynthetic logic of lomaiviticin assembly and provide useful molecular tools for application in biocatalysis and synthetic biology.
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