Student or educator? Sign up with your school email and get 6 months of Pro free.
Cited by 476

The DOI matches its Crossref record; 2 of the 2 references it cites were found in a registry or an index.

The Cα—H⋅⋅⋅O hydrogen bond: A determinant of stability and specificity in transmembrane helix interactions

Open access
Senes, Alessandro, Ubarretxena-Belandia, Iban, Engelman, Donald M.·2001·Proceedings of the National Academy of Sciences

Abstract

The Cα—H⋅⋅⋅O hydrogen bond has been given little attention as a determinant of transmembrane helix association. Stimulated by recent calculations suggesting that such bonds can be much stronger than has been supposed, we have analyzed 11 known membrane protein structures and found that apparent carbon α hydrogen bonds cluster frequently at glycine-, serine-, and threonine-rich packing interfaces between transmembrane helices. Parallel right-handed helix–helix interactions appear to favor Cα—H⋅⋅⋅O bond formation. In particular, Cα—H⋅⋅⋅O interactions are frequent between helices having the structural motif of the glycophorin A dimer and the GxxxG pair. We suggest that Cα—H⋅⋅⋅O hydrogen bonds are important determinants of stability and, depending on packing, specificity in membrane protein folding.

Overview

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1073/pnas.161280798

Cites

2 of 2 references verified0 citation errors · 0 not checkable

Statistics

Verification

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Citations

Cites

Show all 2 references

Cited by

See all 476

Metadata

Authors
Senes, A., Ubarretxena-Belandia, I., & Engelman, D. M.
Venue
Proceedings of the National Academy of Sciences
Published
2001-07-31
Volume
98
Issue
16
Pages
9056-9061
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2128805758
Cited by
476
References
2
FWCI
9.45
Type
journal article
Language
en
Open access
green

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

How to cite

Cite CoChat for the checks on this page, and the paper for its own findings.

This page
CoChat. (2026). Citation check: The Cα—H⋅⋅⋅O hydrogen bond: A determinant of stability and specificity in transmembrane helix interactions. https://app.cochat.ai/papers/10.1073/pnas.161280798
The paper
Senes, A., Ubarretxena-Belandia, I., & Engelman, D. M. (2001). The Cα—H⋅⋅⋅O hydrogen bond: A determinant of stability and specificity in transmembrane helix interactions. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.161280798

Data sources

Bibliographic data: Semantic Scholar, OpenAlex, Crossref.

Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.