RPRD1B Interacts with phosphorylated C-terminal heptapeptide repeat domain (CTD) of the largest RNA polymerase II subunit POLR2A, and participates in dephosphorylation of the CTD by RPAP2. Transcriptional regulator which enhances expression of CCND1. Promotes binding of RNA polymerase II to the CCDN1 promoter and to the termination region before the poly-A site but decreases its binding after the poly-A site. Prevents RNA polymerase II from reading through the 3' end termination site and may allow it to be recruited back to the promoter through promotion of the formation of a chromatin loop. Also enhances the transcription of a number of other cell cycle-related genes including CDK2, CDK4, CDK6 and cyclin-E but not CDKN1A, CDKN1B or cyclin-A. Promotes cell proliferation. Belongs to the UPF0400 (RTT103) family. Preferentially expressed in a range of tumor tissues including colon, lung, liver, breast, prostate, stomach, uterine endometrium and cervical cancers with higher levels in tumors than in adjacent non-tumor tissue (at protein level). Note: This description may include information from UniProtKB.
Protein type: Motility/polarity/chemotaxis
Chromosomal Location of human Ortholog: 20q11.23
Cellular Component:  nucleoplasm; nucleus; transcription preinitiation complex
Molecular Function:  identical protein binding; protein binding; RNA polymerase II complex binding
Biological Process:  mRNA 3'-end processing; positive regulation of cell population proliferation; positive regulation of transcription by RNA polymerase II; regulation of cell cycle process; RNA polymerase II promoter clearance
Reference #:  Q9NQG5 (UniProtKB)
Alt. Names/Synonyms: C20orf77; Cell cycle-related and expression-elevated protein in tumor; cell-cycle related and expression-elevated protein in tumor; CREPT; dJ1057B20.2; DKFZp434P0735; FLJ44520; K-H; Ku70-binding protein 5-Hera; Kub5-Hera; NET60; regulation of nuclear pre-mRNA domain containing 1B; Regulation of nuclear pre-mRNA domain-containing protein 1B; RPR1B; RPRD1B
Gene Symbols: RPRD1B
Molecular weight: 36,900 Da
Basal Isoelectric point: 5.73  Predict pI for various phosphorylation states
Protein-Specific Antibodies, siRNAs or Recombinant Proteins from Cell Signaling Technology® Total Proteins
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Protein Structure Not Found.

Cross-references to other databases:  AlphaFold  |  STRING  |  cBioPortal  |  Wikipedia  |  neXtProt  |  Protein Atlas  |  BioGPS  |  Pfam  |  RCSB PDB  |  Phospho.ELM  |  NetworKIN  |  UniProtKB  |  Entrez-Gene  |  GenPept  |  Ensembl Gene  |  Ensembl Protein