Linkage of the Nit1C gene cluster to bacterial cyanide assimilation as a nitrogen source

Microbiology
Lauren B JonesD A Kunz

Abstract

A genetic linkage between a conserved gene cluster (Nit1C) and the ability of bacteria to utilize cyanide as the sole nitrogen source was demonstrated for nine different bacterial species. These included three strains whose cyanide nutritional ability has formerly been documented (Pseudomonas fluorescens Pf11764, Pseudomonas putida BCN3 and Klebsiella pneumoniae BCN33), and six not previously known to have this ability [Burkholderia (Paraburkholderia) xenovorans LB400, Paraburkholderia phymatum STM815, Paraburkholderia phytofirmans PsJN, Cupriavidus (Ralstonia) eutropha H16, Gluconoacetobacter diazotrophicus PA1 5 and Methylobacterium extorquens AM1]. For all bacteria, growth on or exposure to cyanide led to the induction of the canonical nitrilase (NitC) linked to the gene cluster, and in the case of Pf11764 in particular, transcript levels of cluster genes (nitBCDEFGH) were raised, and a nitC knock-out mutant failed to grow. Further studies demonstrated that the highly conserved nitB gene product was also significantly elevated. Collectively, these findings provide strong evidence for a genetic linkage between Nit1C and bacterial growth on cyanide, supporting use of the term cyanotrophy in describing what may represent a new ...Continue Reading

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Citations

May 3, 2019·Applied Microbiology and Biotechnology·Varsha P Chhiba-GovindjeeDean Brady
Sep 11, 2019·Biotechnology and Bioengineering·Xiao-Yang OuWen-Yong Lou
Jan 15, 2019·Microbiology Resource Announcements·Lauren B Jones, Daniel A Kunz
Jan 29, 2021·Biochemistry and Biophysics Reports·Lauren B JonesDaniel A Kunz

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