The DOI matches its Crossref record.
Ca2+-dependent protein phosphorylation system in membranes from various tissues, and its activation by "calcium-dependent regulator".
Open accessAbstract
Analysis of membranes from a variety of tissues has revealed a widespread distribution of a protein phosphorylation system dependent on the presence of both Ca2+ and "calcium-dependent regulator" (CDR). This protein phosphorylation system has been studied in some detail in nervous tissue. Neuronal membranes contain a protein phosphorylation system that requires Ca2+ and a soluble heat-stable protein [Schulman, H. & Greengard, P. (1978) Nature (London) 271, 478--479]. This protein has been purified to homogeneity from bovine cerebral cortex, with use of an assay based on its ability to stimulate Ca2+-dependent protein phosphorylation in membranes. This protein kinase activator appears to be identical to CDR of cyclic nucleotide phosphodiesterase. Throughout its purification, this single entity was found to activate both Ca2+-dependent protein kinase and cyclic nucleotide phosphodiesterase. The kinase activator purified here and authentic CDR were equally effective in their ability to activate Ca2+-dependent protein kinase.
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.
Integrity signals
Registry
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.
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
The role of protein phosphorylation in neural and hormonal control of cellular activity
Cohen, P. (1982) · Nature · doi:10.1038/296613a0 · Cited by 1,123
A Dynamic Pathway for Calcium-Independent Activation of CaMKII by Methionine Oxidation
Erickson, J. R., Joiner, M.-L. A., Guan, X., Kutschke, W., Yang, J., Oddis, C. V., Bartlett, R. K., Lowe, J. S., O'Donnell, S. E., Aykin-Burns, N., et al. (2008) · Cell · doi:10.1016/j.cell.2008.02.048 · Cited by 1,122
Calcium Channel Regulation and Presynaptic Plasticity
Catterall, W. A., & Few, A. P. (2008) · Neuron · doi:10.1016/j.neuron.2008.09.005 · Cited by 647
Structure–function of the multifunctional Ca2+/calmodulin-dependent protein kinase II
HUDMON, A., & SCHULMAN, H. (2002) · Biochemical Journal · doi:10.1042/bj20020228 · Cited by 615
Self-citationKennedy, M. B., Bennett, M. K., & Erondu, N. E. (1983) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.80.23.7357 · Cited by 610
Metadata
- Authors
- Schulman, H., & Greengard, P.
- Venue
- Proceedings of the National Academy of Sciences
- Published
- 1978-11
- Volume
- 75
- Issue
- 11
- Pages
- 5432-5436
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- OpenAlex
- W2122503622
- Cited by
- 348
- References
- 0
- FWCI
- 18.63
- 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: Ca2+-dependent protein phosphorylation system in membranes from various tissues, and its activation by "calcium-dependent regulator". https://app.cochat.ai/papers/10.1073/pnas.75.11.5432
- The paper
- Schulman, H., & Greengard, P. (1978). Ca2+-dependent protein phosphorylation system in membranes from various tissues, and its activation by "calcium-dependent regulator". Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.75.11.5432
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.