Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 537832
Title Analysis of the Pseudouridimycin Biosynthetic Pathway Provides Insights into the Formation of C-nucleoside Antibiotics
Author(s) Sosio, Margherita; Gaspari, Eleonora; Iorio, Marianna; Pessina, Silvia; Medema, Marnix H.; Bernasconi, Alice; Simone, Matteo; Maffioli, Sonia I.; Ebright, Richard H.; Donadio, Stefano
Source Cell Chemical Biology (2018). - ISSN 2451-9456
Department(s) Bioinformatics
Publication type Refereed Article in a scientific journal
Publication year 2018
Keyword(s) amide ligases - C-nucleoside antibiotic - pseudouridimycin - pseudouridine synthase - PUM biosynthetic pathway - PUM cluster - PumJ - RNAP inhibitor - specialized oxidoreductases and aminotransferases - TruD-like
Abstract Pseudouridimycin (PUM) is a selective nucleoside-analog inhibitor of bacterial RNA polymerase with activity against Gram-positive and Gram-negative bacteria. PUM, produced by Streptomyces sp. ID38640, consists of a formamidinylated, N-hydroxylated Gly-Gln dipeptide conjugated to 5′-aminopseudouridine. We report the characterization of the PUM gene cluster. Bioinformatic analysis and mutational knockouts of pum genes with analysis of accumulated intermediates, define the PUM biosynthetic pathway. The work provides the first biosynthetic pathway of a C-nucleoside antibiotic and reveals three unexpected features: production of free pseudouridine by the dedicated pseudouridine synthase, PumJ; nucleoside activation by specialized oxidoreductases and aminotransferases; and peptide-bond formation by amide ligases. A central role in the PUM biosynthetic pathway is played by the PumJ, which represents a divergent branch within the TruD family of pseudouridine synthases. PumJ-like sequences are associated with diverse gene clusters likely to govern the biosynthesis of different classes of C-nucleoside antibiotics. Sosio et al. describe the biosynthetic pathway for the C-nucleoside antibiotic pseudouridimycin. Biosynthesis proceeds through formation of pseudouridine by the pseudouridine synthase PumJ, with specialized oxidoreductase, aminotransferase, and amide ligases leading to the final compound. Microbial genomes harbor diverse gene clusters encoding PumJ-related sequences.
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