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@ARTICLE{Schelder:16085,
author = {Schelder, S. and Zaade, D. and Litsanov, B. and Bott, M.
and Brocker, M.},
title = {{T}he two-component signal transduction system {C}op{RS} of
{C}orynebacterium glutamicum is required for adaptation to
copper-excess stress},
journal = {PLoS one},
volume = {6},
issn = {1932-6203},
address = {Lawrence, Kan.},
publisher = {PLoS},
reportid = {PreJuSER-16085},
pages = {e22143},
year = {2011},
note = {Record converted from VDB: 12.11.2012},
comment = {online available},
booktitle = {online available},
abstract = {Copper is an essential cofactor for many enzymes but at
high concentrations it is toxic for the cell. Copper ion
concentrations ≥50 µM inhibited growth of Corynebacterium
glutamicum. The transcriptional response to 20 µM Cu(2+)
was studied using DNA microarrays and revealed 20 genes that
showed a ≥ 3-fold increased mRNA level, including
cg3281-cg3289. Several genes in this genomic region code for
proteins presumably involved in the adaption to
copper-induced stress, e. g. a multicopper oxidase (CopO)
and a copper-transport ATPase (CopB). In addition, this
region includes the copRS genes (previously named cgtRS9)
which encode a two-component signal transduction system
composed of the histidine kinase CopS and the response
regulator CopR. Deletion of the copRS genes increased the
sensitivity of C. glutamicum towards copper ions, but not to
other heavy metal ions. Using comparative transcriptome
analysis of the ΔcopRS mutant and the wild type in
combination with electrophoretic mobility shift assays and
reporter gene studies the CopR regulon and the DNA-binding
motif of CopR were identified. Evidence was obtained that
CopR binds only to the intergenic region between cg3285
(copR) and cg3286 in the genome of C. glutamicum and
activates expression of the divergently oriented gene
clusters cg3285-cg3281 and cg3286-cg3289. Altogether, our
data suggest that CopRS is the key regulatory system in C.
glutamicum for the extracytoplasmic sensing of elevated
copper ion concentrations and for induction of a set of
genes capable of diminishing copper stress.},
keywords = {Adaptation, Physiological: drug effects / Adaptation,
Physiological: genetics / Bacterial Proteins: genetics /
Bacterial Proteins: metabolism / Base Sequence / Binding
Sites / Copper: toxicity / Corynebacterium glutamicum:
cytology / Corynebacterium glutamicum: drug effects /
Corynebacterium glutamicum: genetics / Corynebacterium
glutamicum: physiology / DNA, Bacterial: genetics / DNA,
Bacterial: metabolism / Gene Expression Regulation,
Bacterial: drug effects / Gene Expression Regulation,
Bacterial: genetics / Genes, Bacterial: genetics /
Homeostasis: drug effects / Homeostasis: genetics / Mutation
/ Nucleotide Motifs: genetics / Phosphorylation: drug
effects / Phosphorylation: genetics / Protein Kinases:
genetics / Protein Kinases: metabolism / Signal
Transduction: drug effects / Signal Transduction: genetics /
Stress, Physiological: drug effects / Stress, Physiological:
genetics / Bacterial Proteins (NLM Chemicals) / DNA,
Bacterial (NLM Chemicals) / Copper (NLM Chemicals) / Protein
Kinases (NLM Chemicals) / protein-histidine kinase (NLM
Chemicals) / J (WoSType)},
cin = {IBT-1},
ddc = {500},
cid = {I:(DE-Juel1)VDB55},
pnm = {Biotechnologie},
pid = {G:(DE-Juel1)FUEK410},
shelfmark = {Biology},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:21799779},
pmc = {pmc:PMC3140484},
UT = {WOS:000292931200027},
doi = {10.1371/journal.pone.0022143},
url = {https://juser.fz-juelich.de/record/16085},
}