Cited by 773Drug Transport and Resistance MechanismsATP Synthase and ATPases ResearchEnzyme Structure and Function

ATP binding to the motor domain from an ABC transporter drives formation of a nucleotide sandwich dimer

Open access
Smith, Paul C, Karpowich, Nathan, Millen, Linda, Moody, Jonathan E, Rosen, Jane, Thomas, Philip J, Hunt, John F·2002·Molecular Cell

Abstract

It has been proposed that the reaction cycle of ATP binding cassette (ABC) transporters is driven by dimerization of their ABC motor domains upon binding ATP at their mutual interface. However, no such ATP sandwich complex has been observed for an ABC from an ABC transporter. In this paper, we report the crystal structure of a stable dimer formed by the E171Q mutant of the MJ0796 ABC, which is hydrolytically inactive due to mutation of the catalytic base. The structure shows a symmetrical dimer in which two ATP molecules are each sandwiched between the Walker A motif in one subunit and the LSGGQ signature motif in the other subunit. These results establish the stereochemical basis of the power stroke of ABC transporter pumps.

Integrity signals

Registry

Crossref · 10.1016/s1097-2765(02)00576-2

Cites

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

We couldn’t retrieve this paper’s full text, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Further work demonstrated the role of the Walker A and B motifs in forming the ATP bindings site sandwich required for homodimerization of the ALD protein, and the subsequent power stroke of ATP-dependent substrate transport.

    “Further work demonstrated the role of the Walker A and B motifs in forming the ATP bindings site sandwich required for homodimerization of the ALD protein, and the subsequent power stroke of ATP-dependent substrate transport [36,37].”

Cited by

Sorted by citations

Authors
Smith, P. C., Karpowich, N., Millen, L., Moody, J. E., Rosen, J., Thomas, P. J., & Hunt, J. F.
Affiliations
  • Columbia University (US)
  • The University of Texas Southwestern Medical Center (US)
Corresponding author
Hunt, John F
Venue
Molecular Cell
Publisher
Elsevier BV
Published
2002-07
Volume
10
Issue
1
Pages
139-149
ISSN
1097-2765 (ISSN-L)
OpenAlex
W2072135452
Cited by
773
References
0
Citations by year
2026: 8 · 2025: 10 · 2024: 8 · 2023: 8 · 2022: 16 · 2021: 16 · 2020: 36 · 2019: 21 · 2018: 28 · 2017: 18 · 2016: 19 · 2015: 25 · 2014: 36 · 2013: 28 · 2012: 30
FWCI
22.45
Type
journal article
Language
en
Open access
Locations
  • Molecular Cell (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institute of Diabetes and Digestive and Kidney Diseases (R01DK049835)
Topics
  • Health Sciences › Medicine › Oncology › Drug Transport and Resistance Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › ATP Synthase and ATPases Research
  • Physical Sciences › Materials Science › Materials Chemistry › Enzyme Structure and Function
Keywords
ABC transporters, ATP binding, Walker A motif, power stroke, ATP hydrolysis, crystal structure
MeSH terms
Adenosine Diphosphate, Adenosine Triphosphate, Allosteric Regulation, Amino Acid Sequence, Binding Sites, Fluorescence Polarization, Models, Molecular, Molecular Sequence Data, Mutation, Protein Conformation, Sodium, Methanococcus, Protein Structure, Tertiary, Crystallography, X-Ray, ATP-Binding Cassette Transporters, Dimerization, Molecular Motor Proteins, Amino Acid Motifs, Static Electricity

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review