Evidence map›Paper›PMID 15635088›Full record

ArticleMolecular biology of the cell2005

The yeast endosomal Na+K+/H+ exchanger Nhx1 regulates cellular pH to control vesicle trafficking.

Christopher L Brett, Deepali N Tukaye, Sanchita Mukherjee, Rajini Rao

Open access · greenAbstract read
In one paragraph

Article in Molecular biology of the cell, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 148 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
148citing papers in PubMed, 1 pooled it
5.9field-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

148 citing papers in PubMed, 1 synthesis or guideline pooled it, 303 citations in OpenAlex.

  1. Histone deacetylase-mediated regulation of endolysosomal pH.The Journal of biological chemistry · 2018
    Pooled it
  2. Article
  3. Cystinosin regulates NaEMBO reports · 2026
    Article
  4. Article
  5. Article
  6. Article
  7. Cystinosin is involved in NabioRxiv : the preprint server for biology · 2025
    Article
  8. Review
  9. Article
  10. Review
  11. Article
  12. Article
  13. Review
  14. Endosomal Acid-Base Homeostasis in Neurodegenerative Diseases.Reviews of physiology, biochemistry and pharmacology · 2023
    Article
  15. The Toxoplasma plant-like vacuolar compartment (PLVAC).The Journal of eukaryotic microbiology · 2022
    Review
  16. Article
  17. International journal of molecular sciences · 2022
    Review
  18. Review
  19. Article
  20. Review

88 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

4 authors at 1 institution in 1 country.

Christopher L BrettDepartment of Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.
Deepali N Tukaye
Sanchita Mukherjee
Rajini Rao
Johns Hopkins University · US

Funding

Endosomal Na+/H+ Exchangers From Yeast and Human: Role and RegulationR01DK054214 · NIDDK · JOHNS HOPKINS UNIVERSITY · PI RAO, RAJINI · 1998 to 2011
$3.0M
NIDDK NIH HHS R01 DK054214NIDDK NIH HHS R01 DK54214
6 · The paper itself

Abstract

The relationship between endosomal pH and function is well documented in viral entry, endosomal maturation, receptor recycling, and vesicle targeting within the endocytic pathway. However, specific molecular mechanisms that either sense or regulate luminal pH to mediate these processes have not been identified. Herein we describe the use of novel, compartment-specific pH indicators to demonstrate that yeast Nhx1, an endosomal member of the ubiquitous NHE family of Na+/H+ exchangers, regulates luminal and cytoplasmic pH to control vesicle trafficking out of the endosome. Loss of Nhx1 confers growth sensitivity to low pH stress, and concomitant acidification and trafficking defects, which can be alleviated by weak bases. Conversely, weak acids cause wild-type yeast to present nhx1Delta trafficking phenotypes. Finally, we report that Nhx1 transports K+ in addition to Na+, suggesting that a single mechanism may responsible for both pH and K+-dependent endosomal processes. This presents the newly defined family of eukaryotic endosomal NHE as novel targets for pharmacological inhibition to alleviate pathological states associated with organellar alkalinization.

Indexed as

Biological TransportCation Transport ProteinsCytoplasmCytosolDose-Response Relationship, DrugEndosomesGreen Fluorescent ProteinsHydrogen-Ion ConcentrationMicroscopy, ConfocalModels, BiologicalMutationPhenotypePlasmidsPotassiumReceptors, G-Protein-CoupledReceptors, Mating FactorCation Transport ProteinsGreen Fluorescent ProteinsNHX1 protein, S cerevisiaePotassiumReceptors, G-Protein-CoupledReceptors, Mating FactorReceptors, PheromoneRubidium RadioisotopesSaccharomyces cerevisiae ProteinsSodiumSodium-Hydrogen ExchangersSTE3 protein, S cerevisiae

Identifiers

PMID15635088
PMCPMC551501
OpenAlexW2124804313

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.