Evidence map›Paper›PMID 24155053›Full record

ArticleProtein science : a publication of the Protein Society2014

Refined structures of mouse P-glycoprotein.

Jingzhi Li, Kimberly F Jaimes, Stephen G Aller

Open access · hybridAbstract read
In one paragraph

Article in Protein science : a publication of the Protein Society, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 171 papers.

0numbers the graph read from it
0cells of the map it votes in
171citing papers in PubMed
17.9field-weighted citation impact, top 1% 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

171 citing papers in PubMed, 344 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Review
  5. Article
  6. Article
  7. Article
  8. Review
  9. Article
  10. Regulation of P-Glycoprotein during Oxidative Stress.Antioxidants (Basel, Switzerland) · 2024
    Review
  11. Article
  12. Article
  13. Article
  14. How Cryo-EM Has Expanded Our Understanding of Membrane Transporters.Drug metabolism and disposition: the biological fate of chemicals · 2023
    Review
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Review

111 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

3 authors at 1 institution in 1 country.

Jingzhi LiDepartment of Pharmacology and Toxicology, Center for Structural Biology, University of Alabama at Birmingham, Birmingham, Alabama, 35205.
Kimberly F Jaimes
Stephen G Aller
University of Alabama at Birmingham · US

Funding

XRAY CRYSTALLOGRAPHYP30CA013148 · NCI · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI Robert S Welner · 1985 to 2026
$165.9M
Streamlined Structures of Human Integral Membrane Proteins at Atomic ResolutionDP2OD008591 · OD · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI ALLER, STEPHEN G · 2011 to 2011
$2.2M
Austrian Science Fund FWF P 23319NCI NIH HHS P30 CA013148NIH HHS DP2 OD008591
6 · The paper itself

Abstract

The recently determined C. elegans P-glycoprotein (Pgp) structure revealed significant deviations compared to the original mouse Pgp structure, which suggested possible misinterpretations in the latter model. To address this concern, we generated an experimental electron density map from single-wavelength anomalous dispersion phasing of an original mouse Pgp dataset to 3.8 Å resolution. The map exhibited significantly more detail compared to the original MAD map and revealed several regions of the structure that required de novo model building. The improved drug-free structure was refined to 3.8 Å resolution with a 9.4 and 8.1% decrease in R(work) and R(free), respectively, (R(work)  = 21.2%, R(free) = 26.6%) and a significant improvement in protein geometry. The improved mouse Pgp model contains ∼95% of residues in the favorable Ramachandran region compared to only 57% for the original model. The registry of six transmembrane helices was corrected, revealing amino acid residues involved in drug binding that were previously unrecognized. Registry shifts (rotations and translations) for three transmembrane (TM)4 and TM5 and the addition of three N-terminal residues were necessary, and were validated with new mercury labeling and anomalous Fourier density. The corrected position of TM4, which forms the frame of a portal for drug entry, had backbone atoms shifted >6 Å from their original positions. The drug translocation pathway of mouse Pgp is 96% identical to human Pgp and is enriched in aromatic residues that likely play a collective role in allowing a high degree of polyspecific substrate recognition.

Indexed as

Amino Acid MotifsAmino Acids, AromaticAmino Acid SequenceAnimalsATP Binding Cassette Transporter, Subfamily B, Member 1Biological TransportCrystallography, X-RayFourier AnalysisHumansMiceModels, MolecularProtein ConformationProtein FoldingProtein Structure, SecondaryProtein Structure, TertiarySequence Homology, Amino AcidAmino Acids, AromaticATP Binding Cassette Transporter, Subfamily B, Member 1multidrug resistanceP-glycoproteinprotein modelingSAD phasingX-ray crystallography

Identifiers

PMID24155053
PMCPMC3892297
OpenAlexW2127247883

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.