ID P25322; PN G1/S-specific cyclin-D1; GN Ccnd1; OS 10090; SL Nucleus Position: SL-0178; SL Nucleus Position: SL-0182; SL Comments: Nucleus {ECO:0000269|PubMed:19767775}. Cytoplasm {ECO:0000250|UniProtKB:P24385}. Nucleus membrane {ECO:0000250|UniProtKB:P24385}. Note=Cyclin D-CDK4 complexes accumulate at the nuclear membrane and are then translocated into the nucleus through interaction with KIP/CIP family members. {ECO:0000250|UniProtKB:P24385}. DR UNIPROT: P25322; DR Pfam: PF02984; DR Pfam: PF00134; DR PROSITE: PS00292; DE Function: Regulatory component of the cyclin D1-CDK4 (DC) complex that phosphorylates and inhibits members of the retinoblastoma (RB) protein family including RB1 and regulates the cell-cycle during G(1)/S transition. Phosphorylation of RB1 allows dissociation of the transcription factor E2F from the RB/E2F complex and the subsequent transcription of E2F target genes which are responsible for the progression through the G(1) phase. Hypophosphorylates RB1 in early G(1) phase. Cyclin D-CDK4 complexes are major integrators of various mitogenenic and antimitogenic signals. Also a substrate for SMAD3, phosphorylating SMAD3 in a cell-cycle-dependent manner and repressing its transcriptional activity. Component of the ternary complex, cyclin D1/CDK4/CDKN1B, required for nuclear translocation and activity of the cyclin D-CDK4 complex. Exhibits transcriptional corepressor activity with INSM1 on the NEUROD1 and INS promoters in a cell cycle-independent manner. {ECO:0000250|UniProtKB:P24385}. DE Reference Proteome: Yes; DE Interaction: P30285; IntAct: EBI-1005778; Score: 0.94 DE Interaction: Q64261; IntAct: EBI-1005805; Score: 0.35 DE Interaction: P46414; IntAct: EBI-1005805; Score: 0.35 DE Interaction: P97377; IntAct: EBI-1005805; Score: 0.35 DE Interaction: P63087; IntAct: EBI-1202844; Score: 0.00 DE Interaction: Q99J09; IntAct: EBI-2939789; Score: 0.35 DE Interaction: Q8CIG8; IntAct: EBI-2939789; Score: 0.61 DE Interaction: O14744; IntAct: EBI-2941110; Score: 0.35 DE Interaction: Q9BQA1; IntAct: EBI-2941649; Score: 0.40 DE Interaction: P63321; IntAct: EBI-3956288; Score: 0.46 DE Interaction: P11234; IntAct: EBI-3956307; Score: 0.40 DE Interaction: Q6KAR6; IntAct: EBI-3956307; Score: 0.46 DE Interaction: Q9JIW9; IntAct: EBI-3956328; Score: 0.27 DE Interaction: P11233; IntAct: EBI-3956335; Score: 0.27 DE Interaction: P09055; IntAct: EBI-3956355; Score: 0.27 DE Interaction: Q62796; IntAct: EBI-3956408; Score: 0.40 DE Interaction: Q01101; IntAct: EBI-9253124; Score: 0.35 DE Interaction: O88895; IntAct: EBI-9253173; Score: 0.40 DE Interaction: P13405; IntAct: EBI-11508299; Score: 0.40 DE Interaction: Q9DBR0; IntAct: EBI-11602084; Score: 0.40 DE Interaction: Q9WU00; IntAct: EBI-15593322; Score: 0.35 DE Interaction: P11440; IntAct: EBI-15652518; Score: 0.40 GO GO:0005923; GO GO:0097128; GO GO:0000307; GO GO:0005737; GO GO:0005829; GO GO:0031965; GO GO:0005654; GO GO:0005634; GO GO:0017053; GO GO:0016538; GO GO:0019899; GO GO:0042826; GO GO:0016301; GO GO:0070064; GO GO:0004672; GO GO:0019901; GO GO:0044877; GO GO:0003714; GO GO:0051301; GO GO:0008283; GO GO:0006974; GO GO:0071310; GO GO:0030968; GO GO:0045444; GO GO:0000082; GO GO:0007595; GO GO:0033327; GO GO:0097421; GO GO:0060749; GO GO:0033598; GO GO:0044772; GO GO:0031571; GO GO:0030857; GO GO:0043524; GO GO:0000122; GO GO:0030182; GO GO:0008284; GO GO:0045737; GO GO:1900087; GO GO:0010971; GO GO:0033601; GO GO:0001934; GO GO:0006468; GO GO:0000320; GO GO:0051726; GO GO:0000079; GO GO:2000045; GO GO:0051592; GO GO:0051412; GO GO:0032355; GO GO:0043627; GO GO:0045471; GO GO:0010039; GO GO:0044321; GO GO:0032026; GO GO:0010243; GO GO:0070141; GO GO:0033197; GO GO:0010165; GO GO:0009410; GO GO:0016055; TP Membrane Topology: Unknown; Source: UniProt - Sequence Analysis; SQ MEHQLLCCEVETIRRAYPDTNLLNDRVLRAMLKTEETCAPSVSYFKCVQKEIVPSMRKIVATWMLEVCEEQKCEEEVFPL SQ AMNYLDRFLSLEPLKKSRLQLLGATCMFVASKMKETIPLTAEKLCIYTDNSIRPEELLQMELLLVNKLKWNLAAMTPHDF SQ IEHFLSKMPEADENKQTIRKHAQTFVALCATDVKFISNPPSMVAAGSVVAAMQGLNLGSPNNFLSCYRTTHFLSRVIKCD SQ PDCLRACQEQIEALLESSLRQAQQNVDPKATEEEGEVEEEAGLACTPTDVRDVDI //