| Modifier | Substrate | Residue | Sequence | Mechanism/Effect | PMID | Interaction ID |
|---|---|---|---|---|---|---|
| CyclinK/CDK13 | POLR2A | Ser1878 | SPKYSPTsPTYSPTT | phosphorylation up-regulates activity | 32917631 | SIGNOR-273060 |
| CyclinK/CDK12 | POLR2A | Ser1878 | SPKYSPTsPTYSPTT | phosphorylation up-regulates activity | 32917631 | SIGNOR-273085 |
| CDK12 | POLR2A | Ser1878 | SPKYSPTsPTYSPTT | phosphorylation up-regulates activity | 22012619 | SIGNOR-176805 |
| CDK9 | POLR2A | Ser1878 | SPKYSPTsPTYSPTT | phosphorylation up-regulates activity | 24385927 | SIGNOR-203572 |
| CDK13 | POLR2A | Ser1878 | SPKYSPTsPTYSPTT | phosphorylation up-regulates activity | 32917631 | SIGNOR-273035 |
| Enzyme | Effect | Phosphosite | Effect | Target | PMID | Interaction ID |
|---|---|---|---|---|---|---|
| CyclinK/CDK13 | phosphorylation up-regulates → | POLR2A PSer1878 | phosphorylation up-regulates → | POLR2A | 32917631 | SIGNOR-273060 |
| CyclinK/CDK12 | phosphorylation up-regulates → | POLR2A PSer1878 | phosphorylation up-regulates → | POLR2A | 32917631 | SIGNOR-273085 |
| CDK12 | phosphorylation up-regulates → | POLR2A PSer1878 | phosphorylation up-regulates → | POLR2A | 22012619 | SIGNOR-176805 |
| CDK9 | phosphorylation up-regulates → | POLR2A PSer1878 | phosphorylation up-regulates → | POLR2A | 24385927 | SIGNOR-203572 |
| CDK13 | phosphorylation up-regulates → | POLR2A PSer1878 | phosphorylation up-regulates → | POLR2A | 32917631 | SIGNOR-273035 |
| Regulator | Mechanism/Effect | Target | SIGNOR-ID |
|---|---|---|---|
| CyclinK/CDK13 | phosphorylation → up-regulates activity | POLR2A | SIGNOR-273060 |
| CyclinK/CDK12 | phosphorylation → up-regulates activity | POLR2A | SIGNOR-273085 |
| CDK12 | phosphorylation → up-regulates activity | POLR2A | SIGNOR-176805 |
| CDK9 | phosphorylation → up-regulates activity | POLR2A | SIGNOR-203572 |
| CDK13 | phosphorylation → up-regulates activity | POLR2A | SIGNOR-273035 |