| Modifier | Substrate | Residue | Sequence | Mechanism/Effect | PMID | Interaction ID |
|---|---|---|---|---|---|---|
| RPAP2 | POLR2A | Ser1647 | SPSYSPTsPSYSPTS | dephosphorylation up-regulates activity | 22137580 | SIGNOR-248737 |
| CTDSP1 | POLR2A | Ser1647 | SPSYSPTsPSYSPTS | dephosphorylation up-regulates activity | 22137580 | SIGNOR-248770 |
| TFIIH | POLR2A | Ser1647 | SPSYSPTsPSYSPTS | phosphorylation up-regulates activity | 24746699 | SIGNOR-269370 |
| MAPK1 | POLR2A | Ser1647 | SPSYSPTsPSYSPTS | phosphorylation down-regulates | 14662762 | SIGNOR-120092 |
| MAPK3 | POLR2A | Ser1647 | SPSYSPTsPSYSPTS | phosphorylation down-regulates | 14662762 | SIGNOR-120180 |
| CDK7 | POLR2A | Ser1647 | SPSYSPTsPSYSPTS | phosphorylation down-regulates | 14662762 | SIGNOR-120000 |
| SSU72 | POLR2A | Ser1647 | SPSYSPTsPSYSPTS | dephosphorylation up-regulates activity | 15125841 | SIGNOR-248806 |
| TFIIH | POLR2A | Ser1647 | SPSYSPTsPSYSPTS | phosphorylation down-regulates quantity by destabilization | 14662762 | SIGNOR-269339 |
| Enzyme | Effect | Phosphosite | Effect | Target | PMID | Interaction ID |
|---|---|---|---|---|---|---|
| RPAP2 | dephosphorylation down-regulates ⊣ | POLR2A PSer1647 | dephosphorylation down-regulates ⊣ | POLR2A | 22137580 | SIGNOR-248737 |
| CTDSP1 | dephosphorylation down-regulates ⊣ | POLR2A PSer1647 | dephosphorylation down-regulates ⊣ | POLR2A | 22137580 | SIGNOR-248770 |
| TFIIH | phosphorylation up-regulates → | POLR2A PSer1647 | phosphorylation up-regulates → | POLR2A | 24746699 | SIGNOR-269370 |
| MAPK1 | phosphorylation up-regulates → | POLR2A PSer1647 | phosphorylation down-regulates ⊣ | POLR2A | 14662762 | SIGNOR-120092 |
| MAPK3 | phosphorylation up-regulates → | POLR2A PSer1647 | phosphorylation down-regulates ⊣ | POLR2A | 14662762 | SIGNOR-120180 |
| CDK7 | phosphorylation up-regulates → | POLR2A PSer1647 | phosphorylation down-regulates ⊣ | POLR2A | 14662762 | SIGNOR-120000 |
| SSU72 | dephosphorylation down-regulates ⊣ | POLR2A PSer1647 | dephosphorylation down-regulates ⊣ | POLR2A | 15125841 | SIGNOR-248806 |
| TFIIH | phosphorylation up-regulates → | POLR2A PSer1647 | phosphorylation down-regulates ⊣ | POLR2A | 14662762 | SIGNOR-269339 |
| Regulator | Mechanism/Effect | Target | SIGNOR-ID |
|---|---|---|---|
| RPAP2 | dephosphorylation → up-regulates activity | POLR2A | SIGNOR-248737 |
| CTDSP1 | dephosphorylation → up-regulates activity | POLR2A | SIGNOR-248770 |
| TFIIH | phosphorylation → up-regulates activity | POLR2A | SIGNOR-269370 |
| MAPK1 | phosphorylation down-regulates | POLR2A | SIGNOR-120092 |
| MAPK3 | phosphorylation down-regulates | POLR2A | SIGNOR-120180 |
| CDK7 | phosphorylation down-regulates | POLR2A | SIGNOR-120000 |
| SSU72 | dephosphorylation → up-regulates activity | POLR2A | SIGNOR-248806 |
| TFIIH | phosphorylation down-regulates quantity by destabilization | POLR2A | SIGNOR-269339 |
