The complete 12 Mb genome and transcriptome of Nonomuraea gerenzanensis with new insights into its duplicated "magic" RNA polymerase

Abstract

n contrast to the widely accepted consensus of the existence of a single RNA polymerase in bacteria, several actinomycetes have been recently shown to possess two forms of RNA polymerases due theto co-existence of two rpoB paralogs in their genome. However, the biological signi cance of the rpoB duplication is obscure. In this study we have determined the genome sequence of the lipoglycopeptide antibiotic A40926 producer Nonomuraea gerenzanensis ATCC 39727, an actinomycete with a large genome and two rpoB genes, i.e. rpoB(S) (the wild-type gene) and rpoB(R) (the mutant-type gene). We next analyzed the transcriptional and metabolite pro les in the wild-type gene and in two derivative strains over-expressing either rpoB(R) or a mutated form of this gene to explore the physiological role and biotechnological potential of the "mutant-type" RNA polymerase. We show that rpoB(R) controls antibiotic production and a wide range of metabolic adaptive behaviors in response to environmental pH. This may give interesting perspectives also with regard to biotechnological applications.


Tutti gli autori

  • V. D'Argenio; M. Petrillo; D. Pasanisi; C. Pagliarulo; R. Colicchio; A. a Tal ; M.S. de Biase; M. Zanfardino; E. Scolamiero; C. Pagliuca; A. Gaballo; A.G. Cicatiello; P. Cantiello; I. Postiglione; B. Naso; A. Boccia; M. Durante; L. Cozzuto; P. Salvatore; G. Paolella; F. Salvatore; P. Alifano

Titolo volume/Rivista

Scientific reports


Anno di pubblicazione

2016

ISSN

2045-2322

ISBN

Non Disponibile


Numero di citazioni Wos

Nessuna citazione

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Numero di citazioni Scopus

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Ultimo Aggiornamento Citazioni

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Settori ERC

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Codici ASJC

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