Student or educator? Sign up with your school email and get 6 months of Pro free.
Cited by 323

The DOI matches its Crossref record.

Complete amino acid sequence of human plasma beta 2-glycoprotein I.

Open access
Lozier, J, Takahashi, N, Putnam, F W·1984·Proceedings of the National Academy of Sciences

Abstract

We have determined the complete amino acid sequence of beta 2-glycoprotein I (Mr, congruent to 50,000), a human plasma protein that is associated with lipids and binds to platelets but whose function is not yet known. The protein consists of 326 amino acids and has five attached glucosamine-containing oligosaccharides. The protein is rich in cysteine and proline, and the sequence is notable for the frequent occurrence of Cys-Pro linkages at regular intervals. Computerized analysis of the sequence reveals five consecutive homologous segments in which cysteine, proline, and tryptophan appear to be highly conserved. This suggests that beta 2-glycoprotein I may have evolved by repeated duplications of a gene coding for a 60-amino acid segment of protein.

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.81.12.3640

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 323

Metadata

Authors
Lozier, J., Takahashi, N., & Putnam, F. W.
Venue
Proceedings of the National Academy of Sciences
Published
1984-06
Volume
81
Issue
12
Pages
3640-3644
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2000886437
Cited by
323
References
0
FWCI
5.90
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: Complete amino acid sequence of human plasma beta 2-glycoprotein I. https://app.cochat.ai/papers/10.1073/pnas.81.12.3640
The paper
Lozier, J., Takahashi, N., & Putnam, F. W. (1984). Complete amino acid sequence of human plasma beta 2-glycoprotein I. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.81.12.3640

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.