Evidence map›Paper›PMID 21947979›Full record

ArticleExtremophiles : life under extreme conditions2011

Archaeal transcriptional regulation of the prokaryotic KdpFABC complex mediating K(+) uptake in H. salinarum.

Dorthe Kixmüller, Henrik Strahl, Andy Wende, Jörg-Christian Greie

Abstract read
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In one paragraph

Article in Extremophiles : life under extreme conditions, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
1.6field-weighted citation impact, top 15% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

7 citing papers in PubMed, 13 citations in OpenAlex.

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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

4 authors at 3 institutions in 2 countries.

Dorthe KixmüllerFachbereich Biologie/Chemie, Universität Osnabrück, Germany.
Henrik Strahl
Andy Wende
Jörg-Christian Greie
Osnabrück University · DENewcastle University · GBQiagen (Germany) · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The genome of the halophilic archaeon Halobacterium salinarum encodes the high-affinity ATP-dependent K(+) uptake system Kdp. Previous studies have shown that the genes coding for the KdpFABC complex are arranged in a kdpFABCQ gene cluster together with an additional gene kdpQ. In bacteria, expression of the kdpFABC genes is generally regulated by the dedicated sensor kinase/response regulator pair KdpD/KdpE, which are absent in H. salinarum. Surprisingly, H. salinarum expresses the kdp genes in a manner which is strikingly similar to Escherichia coli. In this study, we show that the halobacterial kdpFABCQ genes constitute an operon and that kdpFABCQ expression is subject to a complex regulatory mechanism involving a negative transcriptional regulator and is further modulated via a so far unknown mechanism. We describe how the regulation of kdp gene expression is facilitated in H. salinarum in contrast to its bacterial counterparts. Whereas the Kdp system fulfils the same core function as an ATP-driven K(+) uptake system in both archaea and bacteria, the different mechanisms involved in the regulation of gene expression appear to have evolved separately, possibly reflecting a different physiological role of ATP-driven K(+) uptake in halophilic archaea.

Indexed as

Gene Expression Regulation, ArchaealTranscription, GeneticArchaeal ProteinsBase SequenceBlotting, NorthernDNA, ArchaealGenes, ArchaealHalobacterium salinarumMolecular Sequence DataOperonPhylogenyPotassiumReal-Time Polymerase Chain ReactionRegulatory Sequences, Nucleic AcidReverse Transcriptase Polymerase Chain ReactionArchaeal ProteinsDNA, ArchaealPotassium

Identifiers

PMID21947979
OpenAlexW2155738979

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.