| Modifier | Substrate | Residue | Sequence | Mechanism/Effect | PMID | Interaction ID |
|---|---|---|---|---|---|---|
| PRKCB | RB1 | Ser780 | STRPPTLsPIPHIPR | phosphorylation down-regulates activity | 29088742 | SIGNOR-280083 |
| CyclinD/CDK4 | RB1 | Ser780 | STRPPTLsPIPHIPR | phosphorylation down-regulates activity | 23336272 | SIGNOR-216988 |
| CDK4 | RB1 | Ser780 | STRPPTLsPIPHIPR | phosphorylation down-regulates | 23336272 | SIGNOR-200483 |
| Enzyme | Effect | Phosphosite | Effect | Target | PMID | Interaction ID |
|---|---|---|---|---|---|---|
| PRKCB | phosphorylation up-regulates → | RB1 PSer780 | phosphorylation down-regulates ⊣ | RB1 | 29088742 | SIGNOR-280083 |
| CyclinD/CDK4 | phosphorylation up-regulates → | RB1 PSer780 | phosphorylation down-regulates ⊣ | RB1 | 23336272 | SIGNOR-216988 |
| CDK4 | phosphorylation up-regulates → | RB1 PSer780 | phosphorylation down-regulates ⊣ | RB1 | 23336272 | SIGNOR-200483 |
| Regulator | Mechanism/Effect | Target | SIGNOR-ID |
|---|---|---|---|
| PRKCB | phosphorylation → down-regulates activity | RB1 | SIGNOR-280083 |
| CyclinD/CDK4 | phosphorylation → down-regulates activity | RB1 | SIGNOR-216988 |
| CDK4 | phosphorylation![]() down-regulates | RB1 | SIGNOR-200483 |