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Comparative Genomic Analysis of Ten Streptococcus pneumoniae Temperate Bacteriophages
Journal article   Open access   Peer reviewed

Comparative Genomic Analysis of Ten Streptococcus pneumoniae Temperate Bacteriophages

Patricia Romero, Nicholas J Croucher, N. Luisa Hiller, Fen Z Hu, Garth D Ehrlich, Stephen D Bentley, Ernesto García and Tim J Mitchell
Journal of bacteriology, v 191(15), pp 4854-4862
Aug 2009
PMID: 19502408
url
https://doi.org/10.1128/JB.01272-08View
Published, Version of Record (VoR) Open

Abstract

Genomics and Proteomics
Streptococcus pneumoniae is an important human pathogen that often carries temperate bacteriophages. As part of a program to characterize the genetic makeup of prophages associated with clinical strains and to assess the potential roles that they play in the biology and pathogenesis in their host, we performed comparative genomic analysis of 10 temperate pneumococcal phages. All of the genomes are organized into five major gene clusters: lysogeny, replication, packaging, morphogenesis, and lysis clusters. All of the phage particles observed showed a Siphoviridae morphology. The only genes that are well conserved in all the genomes studied are those involved in the integration and the lysis of the host in addition to two genes, of unknown function, within the replication module. We observed that a high percentage of the open reading frames contained no similarities to any sequences catalogued in public databases; however, genes that were homologous to known phage virulence genes, including the pblB gene of Streptococcus mitis and the vapE gene of Dichelobacter nodosus , were also identified. Interestingly, bioinformatic tools showed the presence of a toxin-antitoxin system in the phage φSpn_6, and this represents the first time that an addition system in a pneumophage has been identified. Collectively, the temperate pneumophages contain a diverse set of genes with various levels of similarity among them.

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Collaboration types
Domestic collaboration
International collaboration
Web of Science research areas
Microbiology
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