Evidence map›Paper›PMID 15980940›Full record

ReviewExtremophiles : life under extreme conditions2005

The Mrp system: a giant among monovalent cation/proton antiporters?

Talia H Swartz, Sayuri Ikewada, Osamu Ishikawa, Masahiro Ito, Terry Ann Krulwich

Abstract readReview
PubMed Publisher
In one paragraph

Review in Extremophiles : life under extreme conditions, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 84 papers.

0numbers the graph read from it
0cells of the map it votes in
84citing papers in PubMed
8.7field-weighted citation impact, top 3% 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

84 citing papers in PubMed, 169 citations in OpenAlex.

  1. Molecular and energetic basis of histidine switch dynamics in respiratory complex I.Protein science : a publication of the Protein Society · 2026
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  19. Structure of theProceedings of the National Academy of Sciences of the United States of America · 2020
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24 more citing papers are in PubMed but not listed here.

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

5 authors at 2 institutions in 2 countries.

Talia H SwartzDepartment of Pharmacology & Biological Chemistry, Mount Sinai School of Medicine, New York, NY 10029, USA.
Sayuri Ikewada
Osamu Ishikawa
Masahiro Ito
Terry Ann Krulwich
Toyo University · JPIcahn School of Medicine at Mount Sinai · US

Funding

PROTON COUPLING STRATEGIES IN ALKALIPHILIC BACILLUSR01GM028454 · NIGMS · MOUNT SINAI SCHOOL OF MEDICINE OF NYU · PI KRULWICH, TERRY ANN · 1985 to 2017
$6.2M
NIGMS NIH HHS GM28454NIGMS NIH HHS R01 GM028454
6 · The paper itself

Abstract

Mrp systems are a novel and broadly distributed type of monovalent cation/proton antiporter of bacteria and archaea. Monovalent cation/proton antiporters are membrane transport proteins that catalyze efflux of cytoplasmic sodium, potassium or lithium ions in exchange for external hydrogen ions (protons). Other known monovalent cation antiporters are single gene products, whereas Mrp systems have been proposed to function as hetero-oligomers. A mrp operon typically has six or seven genes encoding hydrophobic proteins all of which are required for optimal Mrp-dependent sodium-resistance. There is little sequence similarity of Mrp proteins to other antiporters but three of these proteins have significant sequence similarity to membrane embedded subunits of ion-translocating electron transport complexes. Mrp antiporters have essential roles in the physiology of alkaliphilic and neutralophilic Bacillus species, nitrogen-fixing Sinorhizobium meliloti and in the pathogen Staphylococcus aureus, although these bacteria contain multiple monovalent cation/proton antiporters. The wide distribution of Mrp systems leads to the anticipation of important roles in an even wider variety of pathogens, extremophiles and environmentally important organisms. Here, the distribution, established physiological roles and catalytic activities of Mrp systems are reviewed, hypotheses regarding their complexity are discussed and major open questions about their function are highlighted.

Indexed as

AnimalsAntiportersCationsMultigene FamilyPhylogenyProtein BindingProtonsAntiportersCationsProtons

Identifiers

PMID15980940
OpenAlexW2111727847

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.