Evidence map›Paper›PMID 20974852›Full record

ArticleThe Journal of biological chemistry2011

Constraint-based, homology model of the extracellular domain of the epithelial Na+ channel α subunit reveals a mechanism of channel activation by proteases.

Ossama B Kashlan, Joshua L Adelman, Sora Okumura, Brandon M Blobner, Zachary Zuzek, Rebecca P Hughey, Thomas R Kleyman, Michael Grabe

Open access · hybridAbstract read
In one paragraph

Article in The Journal of biological chemistry, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers.

0numbers the graph read from it
0cells of the map it votes in
50citing papers in PubMed
2.2field-weighted citation impact, top 13% 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

50 citing papers in PubMed, 71 citations in OpenAlex.

  1. Epithelial NaComprehensive Physiology · 2024
    Review
  2. Article
  3. The Epithelial Sodium Channel-An Underestimated Drug Target.International journal of molecular sciences · 2023
    Review
  4. Review
  5. Article
  6. Article
  7. Article
  8. Review
  9. Regulating ENaC's gate.American journal of physiology. Cell physiology · 2020
    Review
  10. Murine epithelial sodium (NaThe Journal of biological chemistry · 2019
    Article
  11. Review
  12. Thumb domains of the three epithelial NaThe Journal of biological chemistry · 2018
    Article
  13. The epithelial NaThe Journal of biological chemistry · 2018
    Article
  14. Conserved cysteines in the finger domain of the epithelial NaThe Journal of biological chemistry · 2018
    Article
  15. Liddle Syndrome: Review of the Literature and Description of a New Case.International journal of molecular sciences · 2018
    Review
  16. N-linked glycans are required on epithelial NaAmerican journal of physiology. Renal physiology · 2018
    Article
  17. Epithelial NaAnnual review of physiology · 2018
    Review
  18. Article
  19. Article
  20. Article
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

8 authors at 2 institutions in 2 countries.

Ossama B KashlanDepartment of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, USA.
Joshua L Adelman
Sora Okumura
Brandon M Blobner
Zachary Zuzek
Rebecca P Hughey
Thomas R Kleyman
Michael Grabe
Institute of Cell Biology and Neurobiology · ITUniversity of Pittsburgh · US

Funding

UNIVERSITY OF PITTSBURGH CLINICAL AND TRANSLATIONAL SCIENCE INSTITUTE: BPCAUL1RR024153 · NCRR · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI REIS, STEVEN E · 2006 to 2011
$73.9M
University of Pittsburgh Clinical and Translational Science InstituteUL1TR000005 · NCATS · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI REIS, STEVEN E · 2012 to 2015
$50.8M
Single Nephron and MetabolomicsP30DK079307 · NIDDK · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI KLEYMAN, THOMAS R · 2008 to 2022
$13.4M
Biomechanical Regulation of Renal Ion TransportersR37DK051391 · NIDDK · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI KLEYMAN, THOMAS R · 2006 to 2015
$3.2M
Sodium Channel BiogenesisR01DK065161 · NIDDK · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI HUGHEY, REBECCA P, KLEYMAN, THOMAS R · 2004 to 2013
$2.8M
SODIUM CHANNELS IN THE MAMMALIAN URINARY BLADDERR01DK051391 · NIDDK · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI KLEYMAN, THOMAS R. · 1996 to 2005
$1.5M
Organization and Structure of ENaC Transmembrane SegmentsK01DK078734 · NIDDK · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI KASHLAN, OSSAMA B · 2008 to 2012
$706k
Sodium Channel BiogenesisR56DK065161 · NIDDK · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI HUGHEY, REBECCA P, KLEYMAN, THOMAS R · 2008 to 2008
$226k
NCATS NIH HHS UL1 TR000005NCRR NIH HHS UL1 RR024153NIDDK NIH HHS DK051391NIDDK NIH HHS DK065161NIDDK NIH HHS DK078734NIDDK NIH HHS DK079307NIDDK NIH HHS K01 DK078734NIDDK NIH HHS P30 DK079307NIDDK NIH HHS R01 DK051391NIDDK NIH HHS R01 DK065161NIDDK NIH HHS R37 DK051391NIDDK NIH HHS R56 DK065161
6 · The paper itself

Abstract

The epithelial Na(+) channel (ENaC) mediates Na(+) transport across high resistance epithelia. This channel is assembled from three homologous subunits with the majority of the protein's mass found in the extracellular domains. Acid-sensing ion channel 1 (ASIC1) is homologous to ENaC, but a key functional domain is highly divergent. Here we present molecular models of the extracellular region of α ENaC based on a large data set of mutations that attenuate inhibitory peptide binding in combination with comparative modeling based on the resolved structure of ASIC1. The models successfully rationalized the data from the peptide binding screen. We engineered new mutants that had not been tested based on the models and successfully predict sites where mutations affected peptide binding. Thus, we were able to confirm the overall general fold of our structural models. Further analysis suggested that the α subunit-derived inhibitory peptide affects channel gating by constraining motions within two major domains in the extracellular region, the thumb and finger domains.

Indexed as

Models, MolecularSequence Homology, Amino AcidAmino Acid SequenceAnimalsBinding SitesEpithelial Sodium Channel BlockersEpithelial Sodium ChannelsExtracellular SpaceFurinIon Channel GatingMiceMolecular Sequence DataMovementMutagenesis, Site-DirectedMutationPeptide HydrolasesEpithelial Sodium Channel BlockersEpithelial Sodium ChannelsFurinPeptide Hydrolases

Identifiers

PMID20974852
PMCPMC3013024
OpenAlexW2008851780

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.