Student or educator? Sign up with your school email and get 6 months of Pro free.
Cited by 589

The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.

[α1(III)]3 Human Skin Collagen

Open access
Epstein, Ervin H.·1974·Journal of Biological Chemistry

Abstract

Human dermis was digested with pepsin under conditions that maintain the helical conformation of the bulk of the collagen.Molecules containing (rl(II1) chains were separated from [al(I)]& collagen by differential salt precipitation at pH '7.5, with the use of the peptides produced by CNBr cleavage to monitor the composition of each fraction.The isolated molecules are composed of three al(IJ1) chains, and these chains are cross-linked by disulfide bonds.Exposure to dithiothreitol liberates the three apparently identical chains, and these elute on carboxymethylcellulose chromatography at a position intermediate between al(I) and (r2.The pepsin-resistant portion of these chains is the same size as that of previously isolated collagen chains.Human dermis was also digested with CNBr, and resultant al(I) and al(II1) peptides were separated chromatographically.The relative quantities of these peptides indicate that al(II1) chains predominate in early fetal skin, but by birth and in later life al(I) chains are approximately 3 times as plentiful.Collagen extracted from human skin has been well characterized in its chain composition (2) and also at the level of CNBr peptides (3, 4).This molecule is composed of two

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 · 10.1016/s0021-9258(19)42661-6

Cites

1 of 1 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 1 references

Cited by

See all 589

Metadata

Authors
Epstein, E. H.
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
1974-05
Volume
249
Issue
10
Pages
3225-3231
ISSN
0021-9258 (ISSN-L)
OpenAlex
W1491757243
Cited by
589
References
1
FWCI
44.48
Type
journal article
Language
en
Open access
hybrid

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: [α1(III)]3 Human Skin Collagen. https://app.cochat.ai/papers/10.1016/s0021-9258(19)42661-6
The paper
Epstein, E. H. (1974). [α1(III)]3 Human Skin Collagen. Journal of Biological Chemistry. https://doi.org/10.1016/s0021-9258(19)42661-6

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.