Identification of genes essential for fluorination and sulfamylation within the nucleocidin gene clusters of Streptomyces calvus and Streptomyces virens
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The gene cluster in Streptomyces calvus associated with the biosynthesis of the fluoro- and sulfamyl-metabolite nucleocidin was interrogated by systematic gene knockouts. Out of the 26 gene deletions most did not affect fluorometabolite production, nine abolished sulfamylation but not fluorination, and three precluded fluorination, having no effect on sulfamylation. In addition to nucI, nucG, nucJ, nucK, nucL, nucN, nucO, nucQ and nucP we identified two genes (nucW, nucA), belonging to a phosphoadenosine phosphosulfate (PAPS) gene cluster, as required for sulfamyl assembly. Three genes (orf(-3), orf2 and orf3) were found to be essential for fluorination, although the activities of their protein products are unknown. These genes as well as nucK, nucN, nucO and nucPNP, whose knockouts produced results differing from those described in a recent report, were also deleted in Streptomyces virens - with confirmatory outcomes. This genetic profile should inform biochemistry aimed at uncovering the enzymology behind nucleocidin biosynthesis.
Wojnowska , M , Feng , X , Chen , Y , Deng , H & O'Hagan , D 2023 , ' Identification of genes essential for fluorination and sulfamylation within the nucleocidin gene clusters of Streptomyces calvus and Streptomyces virens ' , ChemBioChem , vol. 24 , no. 5 , e202200684 . https://doi.org/10.1002/cbic.202200684
Copyright © 2022 The Authors. ChemBioChem published by Wiley-VCH GmbH. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
DescriptionFunding: Authors thank the EPSRC, Leverhulme Trust and the EU Horizon 2020 Sinfonia consortia for financial support. The Chinese Scholarship Council is acknowledged for studentship support (Y.C.).
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