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@ARTICLE{Pfeifer:820607,
author = {Pfeifer, Eugen and Hünnefeld, Max and Popa, Ovidiu and
Polen, Tino and Kohlheyer, Dietrich and Baumgart, Meike and
Frunzke, Julia},
title = {{S}ilencing of cryptic prophages in {C}orynebacterium
glutamicum},
journal = {Nucleic acids research},
volume = {44},
number = {21},
issn = {0301-5610},
address = {Oxford},
publisher = {Oxford Univ. Press},
reportid = {FZJ-2016-05879},
pages = {10117-10131},
year = {2016},
note = {Biotechnologie 1},
abstract = {DNA of viral origin represents a ubiquitous element of
bacterial genomes. Its integration into host regulatory
circuits is a pivotal driver of microbial evolution but
requires the stringent regulation of phage gene activity. In
this study, we describe the nucleoid-associated protein
CgpS, which represents an essential protein functioning as a
xenogeneic silencer in the Gram-positive Corynebacterium
glutamicum. CgpS is encoded by the cryptic prophage CGP3 of
the C. glutamicum strain ATCC 13032 and was first identified
by DNA affinity chromatography using an early phage promoter
of CGP3. Genome-wide profiling of CgpS binding using
chromatin affinity purification and sequencing (ChAP-Seq)
revealed its association with AT-rich DNA elements,
including the entire CGP3 prophage region (187 kbp), as well
as several other elements acquired by horizontal gene
transfer. Countersilencing of CgpS resulted in a
significantly increased induction frequency of the CGP3
prophage. In contrast, a strain lacking the CGP3 prophage
was not affected and displayed stable growth. In a
bioinformatics approach, cgpS orthologs were identified
primarily in actinobacterial genomes as well as several
phage and prophage genomes. Sequence analysis of 618
orthologous proteins revealed a strong conservation of the
secondary structure, supporting an ancient function of these
xenogeneic silencers in phage-host interaction.},
cin = {IBG-1},
ddc = {570},
cid = {I:(DE-Juel1)IBG-1-20101118},
pnm = {581 - Biotechnology (POF3-581)},
pid = {G:(DE-HGF)POF3-581},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000393979400014},
pubmed = {pmid:27492287},
doi = {10.1093/nar/gkw692},
url = {https://juser.fz-juelich.de/record/820607},
}