Student or educator? Sign up with your school email and get 6 months of Pro free.
Cited by 202

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

Molecular cloning of human gastrin cDNA: evidence for evolution of gastrin by gene duplication.

Open access
Boel, E, Vuust, J, Norris, F, Norris, K, Wind, A, Rehfeld, J F, Marcker, K A·1983·Proceedings of the National Academy of Sciences

Abstract

An oligo(dT)-primed cDNA copy of the mRNA coding for the human gastrin precursor was constructed from poly(A)-containing RNA from a human pancreatic, gastrin-producing tumor (a gastrinoma). The cDNA was inserted into the Pst I endonuclease site of plasmid pBR322 by the use of the poly(dC) and poly(dG) tailing procedure. Clones containing gastrin sequences were selected by hybridization to a purified single-stranded 32P-labeled gastrin cDNA probe. This probe was constructed with gastrinoma mRNA as template. As primer for the cDNA synthesis, we used a synthetic oligonucleotide mixture, d(AG-A-A-AG-T-C-C-A-T-C-C-A), corresponding to the gastrin-specific amino acid sequence Trp-Met-Asp-Phe. In this way we determined the nucleotide sequence of the entire coding region (303 nucleotides), the entire 3' untranslated region (102 nucleotides), and 8 nucleotides of the 5' untranslated region. A striking homology between parts of the coding region suggests that evolution of the gastrin gene has involved a gene duplication.

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.80.10.2866

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 202

Metadata

Authors
Boel, E., Vuust, J., Norris, F., Norris, K., Wind, A., Rehfeld, J. F., & Marcker, K. A.
Venue
Proceedings of the National Academy of Sciences
Published
1983-05
Volume
80
Issue
10
Pages
2866-2869
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W1986288596
Cited by
202
References
1
FWCI
6.74
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: Molecular cloning of human gastrin cDNA: evidence for evolution of gastrin by gene duplication. https://app.cochat.ai/papers/10.1073/pnas.80.10.2866
The paper
Boel, E., Vuust, J., Norris, F., Norris, K., Wind, A., Rehfeld, J. F., & Marcker, K. A. (1983). Molecular cloning of human gastrin cDNA: evidence for evolution of gastrin by gene duplication. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.80.10.2866

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.