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Title: Mobile genetic elements in the bacterial phylum Acidobacteria

Abstract

Analysis of the genome of “Candidatus Solibacter usitatus Ellin6076”, a member of the phylum Acidobacteria, revealed a large number of genes associated with mobile genetic elements. These genes encoded transposases, insertion sequence elements and phage integrases. When the amino acid sequences of the mobile element-associated genes were compared, many of them had high (90–100%) amino acid sequence identities, suggesting that these genes may have recently duplicated and dispersed throughout the genome. Although phage integrase encoding genes were prevalent in the “Can. S. usitatus Ellin6076” genome, no intact prophage regions were found. This suggests that the “Can. S. usitatus Ellin6076” large genome arose by horizontal gene transfer via ancient bacteriophage and/or plasmid-mediated transduction, followed by widespread small-scale gene duplications, resulting in an increased number of paralogs encoding traits that could provide selective metabolic, defensive and regulatory advantages in the soil environment. Here we examine the mobile element repertoire of “Can. S. usitatus Ellin6076” in comparison to other genomes from the Acidobacteria phylum, reviewing published studies and contributing some new analyses. We also discuss the presence and potential roles of mobile elements in members of this phylum that inhabit a variety of environments.

Authors:
 [1];  [1]
  1. Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Biological and Environmental Research (BER). Biological Systems Science Division
OSTI Identifier:
1629080
Grant/Contract Number:  
AC52-06NA25396
Resource Type:
Accepted Manuscript
Journal Name:
Mobile Genetic Elements
Additional Journal Information:
Journal Volume: 2; Journal Issue: 4; Journal ID: ISSN 2159-256X
Publisher:
Taylor & Francis
Country of Publication:
United States
Language:
English
Subject:
59 BASIC BIOLOGICAL SCIENCES; acidobacteria; genome; transposase; insertion sequence; phage integrase; horizontal gene transfer; environment

Citation Formats

Challacombe, Jean, and Kuske, Cheryl. Mobile genetic elements in the bacterial phylum Acidobacteria. United States: N. p., 2012. Web. doi:10.4161/mge.21943.
Challacombe, Jean, & Kuske, Cheryl. Mobile genetic elements in the bacterial phylum Acidobacteria. United States. https://doi.org/10.4161/mge.21943
Challacombe, Jean, and Kuske, Cheryl. Sun . "Mobile genetic elements in the bacterial phylum Acidobacteria". United States. https://doi.org/10.4161/mge.21943. https://www.osti.gov/servlets/purl/1629080.
@article{osti_1629080,
title = {Mobile genetic elements in the bacterial phylum Acidobacteria},
author = {Challacombe, Jean and Kuske, Cheryl},
abstractNote = {Analysis of the genome of “Candidatus Solibacter usitatus Ellin6076”, a member of the phylum Acidobacteria, revealed a large number of genes associated with mobile genetic elements. These genes encoded transposases, insertion sequence elements and phage integrases. When the amino acid sequences of the mobile element-associated genes were compared, many of them had high (90–100%) amino acid sequence identities, suggesting that these genes may have recently duplicated and dispersed throughout the genome. Although phage integrase encoding genes were prevalent in the “Can. S. usitatus Ellin6076” genome, no intact prophage regions were found. This suggests that the “Can. S. usitatus Ellin6076” large genome arose by horizontal gene transfer via ancient bacteriophage and/or plasmid-mediated transduction, followed by widespread small-scale gene duplications, resulting in an increased number of paralogs encoding traits that could provide selective metabolic, defensive and regulatory advantages in the soil environment. Here we examine the mobile element repertoire of “Can. S. usitatus Ellin6076” in comparison to other genomes from the Acidobacteria phylum, reviewing published studies and contributing some new analyses. We also discuss the presence and potential roles of mobile elements in members of this phylum that inhabit a variety of environments.},
doi = {10.4161/mge.21943},
journal = {Mobile Genetic Elements},
number = 4,
volume = 2,
place = {United States},
year = {Sun Jul 01 00:00:00 EDT 2012},
month = {Sun Jul 01 00:00:00 EDT 2012}
}

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Works referencing / citing this record:

Bipartite Network Analysis of Gene Sharings in the Microbial World
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