Summary

Name RB1
Full Name Retinoblastoma-associated protein
Synonyms p105-Rb, pRb, Rb, pp110
Primary ID P06400
Links - -
Type protein
Relations 51
Pathways FLT3-ITD signaling, Cell cycle: G1/S phase transition, Cell cycle: G2/M phase transition, Luminal Breast Cancer, Malignant Melanoma, p53 in cancer, Pancreatic ductal adenocarcinoma (PDA), Rhabdomyosarcoma
Function Key regulator of entry into cell division that acts as a tumor suppressor. Promotes G0-G1 transition when phosphorylated by CDK3/cyclin-C. Acts as a transcription repressor of E2F1 target genes. The underphosphorylated, active form of RB1 interacts with E2F1 and represses its transcription activity, leading to cell cycle arrest. Directly involved in heterochromatin formation by maintaining overall chromatin structure and, in particular, that of constitutive heterochromatin by stabilizing histone methylation. Recruits and targets histone methyltransferases SUV39H1, KMT5B and KMT5C, leading to epigenetic transcriptional repression. Controls histone H4 'Lys-20' trimethylation. Inhibits the intrinsic kinase activity of TAF1. Mediates transcriptional repression by SMARCA4/BRG1 by recruiting a histone deacetylase (HDAC) complex to the c-FOS promoter. In resting neurons, transcription of the c-FOS promoter is inhibited by BRG1-dependent recruitment of a phospho-RB1-HDAC1 repressor complex. Upon calcium influx, RB1 is dephosphorylated by calcineurin, which leads to release of the repressor complex (By similarity).

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Modifications Tables

Relations

Regulator Mechanism target score
+ down-regulates img/direct_inhibition.png phosphorylation RB1 0.675
Publications: 5 Organism: Homo Sapiens
+ down-regulates img/direct_inhibition.png phosphorylation RB1 0.927
Publications: 5 Organism: Homo Sapiens
Pathways:Pancreatic ductal adenocarcinoma (PDA)
+ down-regulates img/direct_inhibition.png phosphorylation RB1 0.519
Publications: 1 Organism: Homo Sapiens
Pathways:FLT3-ITD signaling
+ down-regulates activity img/direct_inhibition.png phosphorylation RB1 0.74
Publications: 1
Pathways:FLT3-ITD signaling, Cell cycle: G1/S phase transition, Cell cycle: G2/M phase transition, IGF and Myogenesis, p53 in cancer
+ up-regulates activity img/direct-activation.png phosphorylation RB1 0.433
Publications: 1 Organism: Homo Sapiens
Pathways:FLT3-ITD signaling, Cell cycle: G1/S phase transition, Cell cycle: G2/M phase transition, p53 in cancer
+ up-regulates activity img/direct-activation.png phosphorylation RB1 0.432
Publications: 1 Organism: Homo Sapiens
Pathways:FLT3-ITD signaling, Cell cycle: G2/M phase transition
+ down-regulates activity img/direct_inhibition.png phosphorylation RB1 0.858
Publications: 6 Organism: Homo Sapiens, In Vitro
Pathways:Cell cycle: G1/S phase transition, Cell cycle: G2/M phase transition, Luminal Breast Cancer, Malignant Melanoma, IGF and Myogenesis, Pancreatic ductal adenocarcinoma (PDA), Rhabdomyosarcoma
+ up-regulates activity img/direct-activation.png dephosphorylation RB1 0.303
Publications: 2 Organism: Homo Sapiens
+ down-regulates img/direct_inhibition.png phosphorylation RB1 0.2
Publications: 1 Organism: Homo Sapiens
+ img/unknown.png phosphorylation RB1 0.2
Publications: 1 Organism: Homo Sapiens
Pathways:FLT3-ITD signaling
+ down-regulates img/direct_inhibition.png phosphorylation RB1 0.761
Publications: 1 Organism: Homo Sapiens
+ down-regulates img/direct_inhibition.png phosphorylation RB1 0.342
Publications: 1 Organism: Homo Sapiens
+ down-regulates activity img/direct_inhibition.png phosphorylation RB1 0.425
Publications: 1 Organism: Homo Sapiens
+ down-regulates img/direct_inhibition.png phosphorylation RB1 0.454
Publications: 1 Organism: Homo Sapiens
+ down-regulates img/direct_inhibition.png phosphorylation RB1 0.798
Publications: 1 Organism: Homo Sapiens
+ down-regulates img/direct_inhibition.png phosphorylation RB1 0.879
Publications: 2 Organism: Homo Sapiens
+ img/unknown.png phosphorylation RB1 0.551
Publications: 1 Organism: Homo Sapiens
Pathways:Cell cycle: G2/M phase transition
+ up-regulates activity img/indirect-activation.png RB1 0.704
Publications: 1 Organism: Homo Sapiens
Pathways:FLT3-ITD signaling, Cell cycle: G1/S phase transition, Cell cycle: G2/M phase transition, p53 in cancer, Rhabdomyosarcoma
+ down-regulates activity img/direct_inhibition.png binding E2F1 0.918
Publications: 1 Organism: Homo Sapiens
Pathways:Cell cycle: G1/S phase transition, Cell cycle: G2/M phase transition, Luminal Breast Cancer, Malignant Melanoma, Pancreatic ductal adenocarcinoma (PDA)
+ down-regulates img/direct_inhibition.png binding ABL1 0.551
Publications: 1 Organism: Homo Sapiens
Pathways:Cell cycle: G2/M phase transition
+ up-regulates img/indirect-activation.png Cell_cycle_block 0.7
Publications: 1 Organism: Homo Sapiens
Pathways:Cell cycle: G1/S phase transition, Cell cycle: G2/M phase transition, p53 in cancer
+ down-regulates img/indirect_inhibition.png Proliferation 0.7
Publications: 1 Organism: Homo Sapiens
Pathways:FLT3-ITD signaling, Luminal Breast Cancer, Malignant Melanoma, Pancreatic ductal adenocarcinoma (PDA), Rhabdomyosarcoma
+ img/unknown.png phosphorylation RB1 0.291
Publications: 1 Organism: In Vitro
+ down-regulates img/indirect_inhibition.png Cell_cycle_progress 0.7
Publications: 1 Organism: Homo Sapiens
+ down-regulates activity img/direct_inhibition.png binding RB1 0.2
Publications: 1 Organism: Homo Sapiens
+ up-regulates img/indirect-activation.png HDAC3 0.608
Publications: 1 Organism: Homo Sapiens
+ down-regulates img/direct_inhibition.png binding E2F2 0.911
Publications: 1 Organism: Homo Sapiens
+ up-regulates img/direct-activation.png dephosphorylation RB1 0.483
Publications: 1 Organism: Homo Sapiens
+ up-regulates quantity by expression img/indirect-activation.png transcriptional regulation ITGA10 0.2
Publications: 1 Organism: Mus Musculus
+ up-regulates img/direct-activation.png binding MYOD1 0.403
Publications: 1 Organism: Homo Sapiens
Pathways:IGF and Myogenesis, Rhabdomyosarcoma
+ down-regulates activity img/direct_inhibition.png binding UBTF 0.383
Publications: 1 Organism: In Vitro
+ down-regulates img/indirect_inhibition.png G1/S_transition 0.7
Publications: 1 Organism: Homo Sapiens
Pathways:Cell cycle: G1/S phase transition, Cell cycle: G2/M phase transition, Luminal Breast Cancer, Malignant Melanoma, p53 in cancer, Pancreatic ductal adenocarcinoma (PDA)
+ up-regulates activity img/direct-activation.png phosphorylation RB1 0.2
Publications: 1 Organism: Homo Sapiens
+ down-regulates img/direct_inhibition.png binding TRIP11 0.329
Publications: 1 Organism: Homo Sapiens
+ up-regulates quantity by expression img/direct-activation.png transcriptional regulation RB1 0.403
Publications: 1 Organism: Mus Musculus
Pathways:IGF and Myogenesis, Rhabdomyosarcoma
+ down-regulates activity img/direct_inhibition.png binding ANP32A 0.2
Publications: 1 Organism: Homo Sapiens