Evidence map›Paper›PMID 22900538›Full record

ArticleBMC genomics2012

High- and low-affinity cre boxes for CcpA binding in Bacillus subtilis revealed by genome-wide analysis.

Bogumiła C Marciniak, Monika Pabijaniak, Anne de Jong, Robert Dűhring, Gerald Seidel, Wolfgang Hillen, Oscar P Kuipers

Abstract read
In one paragraph

Article in BMC genomics, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers, 1 of them a synthesis that pooled it.

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47citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

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3 · Its place in the literature

Who cites it

47 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Bogumiła C MarciniakDepartment of Molecular Genetics, Groningen Biomolecular Sciences and Biotechnology Institute, Centrum voor Levenswetenschappen, University of Groningen, Groningen, The Netherlands.
Monika Pabijaniak
Anne de Jong
Robert Dűhring
Gerald Seidel
Wolfgang Hillen
Oscar P Kuipers

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIn Bacillus subtilis and its relatives carbon catabolite control, a mechanism enabling to reach maximal efficiency of carbon and energy sources metabolism, is achieved by the global regulator CcpA (carbon catabolite protein A). CcpA in a complex with HPr-Ser-P (seryl-phosphorylated form of histidine-containing protein, HPr) binds to operator sites called catabolite responsive elements, cre. Depending on the cre box position relative to the promoter, the CcpA/HPr-Ser-P complex can either act as a positive or a negative regulator. The cre boxes are highly degenerate semi-palindromes with a lowly conserved consensus sequence. So far, studies aimed at revealing how CcpA can bind such diverse sites were focused on the analysis of single cre boxes. In this study, a genome-wide analysis of cre sites was performed in order to identify differences in cre sequence and position, which determine their binding affinity.

resultsThe transcriptomes of B. subtilis cultures with three different CcpA expression levels were compared. The higher the amount of CcpA in the cells, the more operons possessing cre sites were differentially regulated. The cre boxes that mediated regulation at low CcpA levels were designated as strong (high affinity) and those which responded only to high amounts of CcpA, as weak (low affinity). Differences in the sequence and position in relation to the transcription start site between strong and weak cre boxes were revealed.

conclusionsCertain residues at specific positions in the cre box as well as, to a certain extent, a more palindromic nature of cre sequences and the location of cre in close vicinity to the transcription start site contribute to the strength of CcpA-dependent regulation. The main factors contributing to cre regulatory efficiencies, enabling subtle differential control of various subregulons of the CcpA regulon, are identified.

Indexed as

Bacillus subtilisBacterial ProteinsBinding SitesGene Expression Regulation, BacterialGenome, BacterialGenome-Wide Association StudyBacterial Proteins

Identifiers

PMID22900538
PMCPMC3463425

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.