Biosynthesis of Phenylnannolone A, a Multidrug Resistance Reversal Agent from the Halotolerant Myxobacterium Nannocystis pusilla B150 - Research portal of Justus Liebig University Giessen:

Journal article

Biosynthesis of Phenylnannolone A, a Multidrug Resistance Reversal Agent from the Halotolerant Myxobacterium Nannocystis pusilla B150

Authors list: Bouhired, SM; Crüsemann, M; Almeida, C; Weber, T; Piel, J; Schäberle, TF; König, GM

Publication year: 2014

Pages: 757-765

Journal: ChemBioChem

Volume number: 15

Issue number: 5

ISSN: 1439-4227

DOI Link: https://doi.org/10.1002/cbic.201300676

Publisher: Wiley

Abstract:
The myxobacterial strain Nannocystis pusilla B150 synthesizes the structurally new polyketides phenylnannolone A-C. Apart from some common volatiles and siderophores, these are the first natural products from the genus Nannocystis. Phenylnannolone A shows inhibitory activity towards the ABCB1 gene product P-glycoprotein and reverses daunorubicin resistance in cancer cells. To decipher the biochemical reactions leading to the formation of phenylnannolone A, the putative biosynthetic genes were identified (phn1, phn2). Phn2 is a polyketide synthase (PKS) with an NRPS-like loading module, and its domain order is consistent with the phenylnannolone A structure. The functionality and substrate selectivity of the loading module were determined by means of a -O-18(4)-ATP pyrophosphate exchange and a phosphopantetheine ejection assay. A specific activation of cinnamic acid by the AMP-ligase was detected. Phn1 is a putative butyryl-CoA carboxylase (BCC), providing ethylmalonyl-CoA for the formation of the ethyl-substituted part of phenylnannolone A. Phn1 is the first BCC found in biosynthetic genes for an ethyl-substituted natural compound. Biosynthesis of phenylnannolone A, putatively encoded by phn1 and phn2, thus utilizes the first biosynthetic machinery in which both a BCC and a PKS are involved.

Authors/Editors

- Uni.-Prof. Dr. Till Friedrich Schäberle

Citation Styles

Harvard Citation style: Bouhired, S., Crüsemann, M., Almeida, C., Weber, T., Piel, J., Schäberle, T., et al. (2014) Biosynthesis of Phenylnannolone A, a Multidrug Resistance Reversal Agent from the Halotolerant Myxobacterium Nannocystis pusilla B150, ChemBioChem, 15(5), pp. 757-765. https://doi.org/10.1002/cbic.201300676

APA Citation style: Bouhired, S., Crüsemann, M., Almeida, C., Weber, T., Piel, J., Schäberle, T., & König, G. (2014). Biosynthesis of Phenylnannolone A, a Multidrug Resistance Reversal Agent from the Halotolerant Myxobacterium Nannocystis pusilla B150. ChemBioChem. 15(5), 757-765. https://doi.org/10.1002/cbic.201300676