Student or educator? Sign up with your school email and get 6 months of Pro free.
Cited by 365

The DOI matches its Crossref record.

Path of the polypeptide in bacteriorhodopsin.

Open access
Engelman, D M, Henderson, R, McLachlan, A D, Wallace, B A·1980·Proceedings of the National Academy of Sciences

Abstract

An attempt has been made to fit the amino acid sequence of bacteriorhodopsin to the three-dimensional density map of the molecule. First, seven segments of the sequence were selected as being probable transmembrane alpha helices. Then each of the 5040 possible ways of fitting these seven segments into the seven regions of helical density in the map were evaluated based on the criteria of connectivity of the nonhelical link regions, charge neutralization, and total scattering density per helix. A single model that may be experimentally tested emerged as the most probable.

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.77.4.2023

Cites

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

Cited by

See all 365

Metadata

Authors
Engelman, D. M., Henderson, R., McLachlan, A. D., & Wallace, B. A.
Venue
Proceedings of the National Academy of Sciences
Published
1980-04
Volume
77
Issue
4
Pages
2023-2027
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2001126546
Cited by
365
References
0
FWCI
13.63
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: Path of the polypeptide in bacteriorhodopsin. https://app.cochat.ai/papers/10.1073/pnas.77.4.2023
The paper
Engelman, D. M., Henderson, R., McLachlan, A. D., & Wallace, B. A. (1980). Path of the polypeptide in bacteriorhodopsin. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.77.4.2023

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.