Small rolling circle plasmids in Bacillus subtilis and related species: organization, distribution, and their possible role in host physiology

Plasmid
S GuglielmettiC Parini

Abstract

Bacillus subtilis and related species (Bacillus licheniformis, Bacillus pumilus, Bacillus amyloliquefaciens, and Bacillus mojavensis) represent a group of bacteria largely studied and widely employed by industry. Small rolling circle replicating plasmids of this group of bacteria have been intensively studied as they represent a convenient model for genetic research and for the construction of molecular tools for the genetic modification of their hosts. Through the computational analysis of the available plasmid sequences to date, the first part of this review focuses on the main stages that the present model for rolling circle replication involves, citing the research data which helped to elucidate the mechanism by which these molecules replicate. Analysis of the distribution and phylogeny of the small RC plasmids inside the Bacillus genus is then considered, emphasizing the low level of diversity observed among these plasmids through the in silico analysis of their organization and the sequence divergence of their replication module. Finally, the parasitic vs. mutualistic nature of small rolling circle plasmids is briefly discussed.

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Nov 2, 2013·Plasmid·Rūta KananavičiūtėDonaldas Čitavičius
Jul 14, 2010·Plasmid·Zhen-Hua ZhangBiao Shen
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Dec 29, 2012·Beneficial Microbes·S GuglielmettiP Álvarez-Martín

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