Evidence map›Paper›PMID 32458799›Full record

ArticleeLife2020

Characterization of the kinetic cycle of an ABC transporter by single-molecule and cryo-EM analyses.

Ling Wang, Zachary Lee Johnson, Michael R Wasserman, Jesper Levring, Jue Chen, Shixin Liu

Open access · goldAbstract read
In one paragraph

Article in eLife, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 48 papers.

0numbers the graph read from it
0cells of the map it votes in
48citing papers in PubMed
5.6field-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

48 citing papers in PubMed, 93 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Review
  8. Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Review
  15. Review
  16. Article
  17. Article
  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

6 authors at 2 institutions in 1 country.

Ling Wang *Laboratory of Nanoscale Biophysics and Biochemistry, The Rockefeller University, New York, United States.
Zachary Lee Johnson *Laboratory of Membrane Biology and Biophysics, The Rockefeller University, New York, United States.
Michael R Wasserman *Laboratory of Nanoscale Biophysics and Biochemistry, The Rockefeller University, New York, United States.
Jesper Levring *Laboratory of Membrane Biology and Biophysics, The Rockefeller University, New York, United States.
Jue ChenLaboratory of Membrane Biology and Biophysics, The Rockefeller University, New York, United States.ORCID 0000-0003-2075-4283
Shixin LiuLaboratory of Nanoscale Biophysics and Biochemistry, The Rockefeller University, New York, United States.ORCID 0000-0003-4238-7066
Rockefeller University · USHoward Hughes Medical Institute · US

Funding

Probing Symmetry Breaking in Epigenetic Inheritance: From Single Molecules to Systems BiologyDP2HG010510 · NHGRI · ROCKEFELLER UNIVERSITY · PI LIU, SHIXIN · 2018 to 2018
$2.5M
NHGRI NIH HHS DP2 HG010510
6 · The paper itself

Abstract

ATP-binding cassette (ABC) transporters are molecular pumps ubiquitous across all kingdoms of life. While their structures have been widely reported, the kinetics governing their transport cycles remain largely unexplored. Multidrug resistance protein 1 (MRP1) is an ABC exporter that extrudes a variety of chemotherapeutic agents and native substrates. Previously, the structures of MRP1 were determined in an inward-facing (IF) or outward-facing (OF) conformation. Here, we used single-molecule fluorescence spectroscopy to track the conformational changes of bovine MRP1 (bMRP1) in real time. We also determined the structure of bMRP1 under active turnover conditions. Our results show that substrate stimulates ATP hydrolysis by accelerating the IF-to-OF transition. The rate-limiting step of the transport cycle is the dissociation of the nucleotide-binding-domain dimer, while ATP hydrolysis per se does not reset MRP1 to the resting state. The combination of structural and kinetic data illustrates how different conformations of MRP1 are temporally linked and how substrate and ATP alter protein dynamics to achieve active transport.

Indexed as

Adenosine TriphosphateAnimalsATP-Binding Cassette, Sub-Family C ProteinsBinding SitesCattleCryoelectron MicroscopyKineticsModels, MolecularProtein ConformationSpectrometry, FluorescenceAdenosine TriphosphateATP-Binding Cassette, Sub-Family C Proteinsmultidrug resistance-associated protein 1ABC transporterconformational dynamicsCryo-EMmolecular biophysicsMRP1multidrug resistancenonesingle-molecule FRETstructural biology

Identifiers

PMID32458799
PMCPMC7253176
OpenAlexW3028911473

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.