New putative iron-uptake genes were identified in published genomes of the opportunistic human pathogen Acinetobacter baumannii, and their occurrence was determined in a genotypically distinct collection of 50 clinical isolates by PCR and Southern blot assays. The results demonstrated that all A. baumannii isolates tested share the coding potential for two endogenous siderophores, a heme-acquisition and a ferrous iron-uptake system. A second heme-uptake cluster was detected in almost two thirds of isolates, without any apparent correlation with the clonal lineage of the strains. The wide distribution of multiple iron-acquisition systems among diverse A. baumannii clinical isolates argues for a contribution of iron uptake to the pathogenicity of this species. (C) 2010 Institut Pasteur. Published by Elsevier Masson SAS. All rights reserved.
Genome-assisted identification of putative iron-utilization genes in Acinetobacter baumannii and their distribution among a genotypically diverse collection of clinical isolates / Luisa C. s., Antunes; Imperi, Francesco; Kevin J., Towner; Paolo, Visca. - In: RESEARCH IN MICROBIOLOGY. - ISSN 0923-2508. - STAMPA. - 162:3(2011), pp. 279-284. [10.1016/j.resmic.2010.10.010]
Genome-assisted identification of putative iron-utilization genes in Acinetobacter baumannii and their distribution among a genotypically diverse collection of clinical isolates
IMPERI, FRANCESCO;
2011
Abstract
New putative iron-uptake genes were identified in published genomes of the opportunistic human pathogen Acinetobacter baumannii, and their occurrence was determined in a genotypically distinct collection of 50 clinical isolates by PCR and Southern blot assays. The results demonstrated that all A. baumannii isolates tested share the coding potential for two endogenous siderophores, a heme-acquisition and a ferrous iron-uptake system. A second heme-uptake cluster was detected in almost two thirds of isolates, without any apparent correlation with the clonal lineage of the strains. The wide distribution of multiple iron-acquisition systems among diverse A. baumannii clinical isolates argues for a contribution of iron uptake to the pathogenicity of this species. (C) 2010 Institut Pasteur. Published by Elsevier Masson SAS. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.