Aliases for LEO1 Gene
- LEO1 Homolog, Paf1/RNA Polymerase II Complex Component 2 3 5
- Replicative Senescence Down-Regulated Leo1-Like Protein 3 4
- RDL 3 4
- Leo1, Paf1/RNA Polymerase II Complex Component, Homolog (S. Cerevisiae) 2
- Leo1, Paf1/RNA Polymerase II Complex Component, Homolog 3
- Leo1 Paf1/RNA Polymerase II Complex Component 3
- RNA Polymerase-Associated Protein LEO1 3
External Ids for LEO1 Gene
Previous GeneCards Identifiers for LEO1 Gene
LEO1, parafibromin (CDC73; MIM 607393), CTR9 (MIM 609366), and PAF1 (MIM 610506) form the PAF protein complex that associates with the RNA polymerase II subunit POLR2A (MIM 180660) and with a histone methyltransferase complex (Rozenblatt-Rosen et al., 2005 [PubMed 15632063]).[supplied by OMIM, Mar 2008]
GeneCards Summary for LEO1 Gene
LEO1 (LEO1 Homolog, Paf1/RNA Polymerase II Complex Component) is a Protein Coding gene. Among its related pathways are Formation of HIV-1 elongation complex containing HIV-1 Tat and Signaling by Wnt.
UniProtKB/Swiss-Prot for LEO1 Gene
Component of the PAF1 complex (PAF1C) which has multiple functions during transcription by RNA polymerase II and is implicated in regulation of development and maintenance of embryonic stem cell pluripotency. PAF1C associates with RNA polymerase II through interaction with POLR2A CTD non-phosphorylated and Ser-2- and Ser-5-phosphorylated forms and is involved in transcriptional elongation, acting both indepentently and synergistically with TCEA1 and in cooperation with the DSIF complex and HTATSF1. PAF1C is required for transcription of Hox and Wnt target genes. PAF1C is involved in hematopoiesis and stimulates transcriptional activity of KMT2A/MLL1; it promotes leukemogenesis through association with KMT2A/MLL1-rearranged oncoproteins, such as KMT2A/MLL1-MLLT3/AF9 and KMT2A/MLL1-MLLT1/ENL. PAF1C is involved in histone modifications such as ubiquitination of histone H2B and methylation on histone H3 Lys-4 (H3K4me3). PAF1C recruits the RNF20/40 E3 ubiquitin-protein ligase complex and the E2 enzyme UBE2A or UBE2B to chromatin which mediate monoubiquitination of Lys-120 of histone H2B (H2BK120ub1); UB2A/B-mediated H2B ubiquitination is proposed to be coupled to transcription. PAF1C is involved in mRNA 3 end formation probably through association with cleavage and poly(A) factors. In case of infection by influenza A strain H3N2, PAF1C associates with viral NS1 protein, thereby regulating gene transcription. Involved in polyadenylation of mRNA precursors. Connects PAF1C to Wnt signaling.