PKC-Dependent Phosphorylation May Regulate the Ability of Connexin43 to Inhibit DNA Synthesis
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Bibliographic record
Abstract
Phosphorylation affects several biological functions of connexin43 (Cx43), although its role on Cx43-mediated inhibition of DNA synthesis is not known. Previous studies showed increased Cx43 phosphorylation on serine in response to growth factor stimulation of cardiomyocytes, mediated by protein kinase C-epsilon (PKCepsilon). Here we report that activation of PKCepsilon is also necessary for stimulation of cardiomyocyte DNA synthesis and mitosis. We have investigated the participation of specific serine residues that are putative PKC targets in producing phosphorylated Cx43 species and also in regulating DNA synthesis in cardiomyocytes. Interference with the PKC signaling system and/or the phosphorylation of specific amino-acids of Cx43 may allow regulation of the mitogenic response.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it