Student or educator? Sign up with your school email and get 6 months of Pro free.
Cited by 431

The DOI matches its Crossref record; 4 of the 4 references it cites were found in a registry or an index.

Mechanism of Activation of Catabolite-Sensitive Genes: A Positive Control System

Open access
Zubay, Geoffrey, Schwartz, Daniele, Beckwith, Jon·1970·Proceedings of the National Academy of Sciences

Abstract

Catabolite repression is defined as the inhibition of enzyme induction by glucose or related substances. In the bacterium E. coli , the effect of glucose appears to be due to a lowering of the cyclic AMP level. A DNA-directed cell-free system for β-galactosidase synthesis has served as a model system for studying the mechanism of action of cyclic AMP. Previously, it was reported that in this system cyclic AMP is required for normal initiation of mRNA synthesis. A protein factor which acts in conjunction with the cyclic AMP has been partially purified. This protein factor has a high affinity for cyclic AMP. These and other results presented herein lead us to the conclusion that cyclic AMP and a protein factor called the catabolite gene activator protein are part of a positive control system for activating catabolite-sensitive genes.

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.66.1.104

Cites

4 of 4 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 4 references

Cited by

See all 431

Metadata

Authors
Zubay, G., Schwartz, D., & Beckwith, J.
Venue
Proceedings of the National Academy of Sciences
Published
1970-05
Volume
66
Issue
1
Pages
104-110
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2061482652
Cited by
431
References
4
FWCI
51.03
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: Mechanism of Activation of Catabolite-Sensitive Genes: A Positive Control System. https://app.cochat.ai/papers/10.1073/pnas.66.1.104
The paper
Zubay, G., Schwartz, D., & Beckwith, J. (1970). Mechanism of Activation of Catabolite-Sensitive Genes: A Positive Control System. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.66.1.104

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.