Wenski SL, Kolbert D, Grammbitter GLC, Bode HB. Fabclavine biosynthesis in X. szentirmaii: shortened derivatives and characterization of the thioester reductase FclG and the condensation domain-like protein FclL.
J Ind Microbiol Biotechnol 2019;
46:565-572. [PMID:
30610410 DOI:
10.1007/s10295-018-02124-8]
[Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Accepted: 12/19/2018] [Indexed: 12/31/2022]
Abstract
Fabclavines, unusual peptide-polyketide-polyamine hybrids, show broad-spectrum bioactivity against a variety of different organism like Gram-positive and -negative bacteria, fungi and protozoa. We elucidated the biosynthesis of these NRPS-PKS hybrids in Xenorhabdus szentirmaii by deletion of most genes encoded in the fabclavine BGC and subsequent analysis of produced fabclavine or polyamine intermediates. Thereby, we identified shortened fabclavines similar to the bioactive zeamines. Furthermore, we analyzed the thioester reductase FclG and the free-standing condensation domain-like protein FclL in detail and observed low substrate specificity for both enzymes.
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