cell division cycle and apoptosis regulator 1

cleavage and polyadenylation specific factor 3, 73kDa; Component of the cleavage and polyadenylation specificity factor (CPSF) complex that play a key role in pre-mRNA 3’-end formation, recognizing the AAUAAA signal sequence and interacting with poly(A) polymerase and other factors to bring about cleavage and poly(A) addition. Has endonuclease activity, and functions as mRNA 3’-end-processing endonuclease. Also involved in the histone 3’-end pre-mRNA processing. U7 snRNP- dependent protein that induces both the 3’-endoribonucleolytic cleavage of histone pre-mRNAs and acts as a 5’ to 3’ [...]

cell division cycle and apoptosis regulator 1

cleavage and polyadenylation specific factor 7, 59kDa; Component of the cleavage factor Im complex (CFIm) that plays a key role in pre-mRNA 3’ processing. Binds to cleavage and polyadenylation RNA substrates

cell division cycle and apoptosis regulator 1

cleavage stimulation factor, 3’ pre-RNA, subunit 1, 50kDa; One of the multiple factors required for polyadenylation and 3’-end cleavage of mammalian pre-mRNAs. May be responsible for the interaction of CSTF with other factors to form a stable complex on the pre-mRNA

cell division cycle and apoptosis regulator 1

DnaJ (Hsp40) homolog, subfamily C, member 8

cell division cycle and apoptosis regulator 1

NHP2 non-histone chromosome protein 2-like 1 (S. cerevisiae); Binds to the 5’-stem-loop of U4 snRNA and may play a role in the late stage of spliceosome assembly. The protein undergoes a conformational change upon RNA-binding

cell division cycle and apoptosis regulator 1

nudix (nucleoside diphosphate linked moiety X)-type motif 21; Component of the cleavage factor Im (CFIm) complex that plays a key role in pre-mRNA 3’-processing. Involved in association with CPSF6 or CPSF7 in pre-MRNA 3’-end poly(A) site cleavage and poly(A) addition. NUDT21/CPSF5 binds to cleavage and polyadenylation RNA substrates. The homodimer mediates simultaneous sequence-specific recognition of two 5’-UGUA-3’ elements within the pre-mRNA. Binds to, but does not hydrolyze mono- and di-adenosine nucleotides. May have a role in mRNA export

cell division cycle and apoptosis regulator 1

poly(A) binding protein, nuclear 1; Involved in the 3’-end formation of mRNA precursors (pre-mRNA) by the addition of a poly(A) tail of 200-250 nt to the upstream cleavage product. Stimulates poly(A) polymerase (PAPOLA) conferring processivity on the poly(A) tail elongation reaction and controls also the poly(A) tail length. Increases the affinity of poly(A) polymerase for RNA. Is also present at various stages of mRNA metabolism including nucleocytoplasmic trafficking and nonsense-mediated decay (NMD) of mRNA. Cooperates with SKIP to synergistically activate E-box-mediated transcripti [...]

cell division cycle and apoptosis regulator 1

PHD finger protein 5A; Acts as a transcriptional regulator by binding to the GJA1/Cx43 promoter and enhancing its up-regulation by ESR1/ER- alpha. Also involved in pre-mRNA splicing

cell division cycle and apoptosis regulator 1

polymerase (RNA) II (DNA directed) polypeptide E, 25kDa; DNA-dependent RNA polymerase catalyzes the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates. Common component of RNA polymerases I, II and III which synthesize ribosomal RNA precursors, mRNA precursors and many functional non-coding RNAs, and small RNAs, such as 5S rRNA and tRNAs, respectively. Pol II is the central component of the basal RNA polymerase II transcription machinery. Pols are composed of mobile elements that move relative to each other. In Pol II, POLR2E/RPB5 is part of the low [...]

cell division cycle and apoptosis regulator 1

polymerase (RNA) II (DNA directed) polypeptide I, 14.5kDa; DNA-dependent RNA polymerase catalyzes the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates. Component of RNA polymerase II which synthesizes mRNA precursors and many functional non-coding RNAs. Pol II is the central component of the basal RNA polymerase II transcription machinery. It is composed of mobile elements that move relative to each other. RPB9 is part of the upper jaw surrounding the central large cleft and thought to grab the incoming DNA template (By similarity)

cell division cycle and apoptosis regulator 1

PRP6 pre-mRNA processing factor 6 homolog (S. cerevisiae)

cell division cycle and apoptosis regulator 1

splicing factor 3a, subunit 2, 66kDa; Subunit of the splicing factor SF3A required for ’A’ complex assembly formed by the stable binding of U2 snRNP to the branchpoint sequence (BPS) in pre-mRNA. Sequence independent binding of SF3A/SF3B complex upstream of the branch site is essential, it may anchor U2 snRNP to the pre-mRNA. May also be involved in the assembly of the ’E’ complex

cell division cycle and apoptosis regulator 1

Pre-mRNA branch site protein p14 ; Necessary for the splicing of pre-mRNA. Directly contacts the pre-mRNA branch site adenosine for the first catalytic step of splicing. Enters the spliceosome and associates with the pre-mRNA branch site as part of the 17S U2 or, in the case of the minor spliceosome, as part of the 18S U11/U12 snRNP complex, and thus may facilitate the interaction of these snRNP with the branch sites of U2 and U12 respectively

cell division cycle and apoptosis regulator 1

small nuclear ribonucleoprotein 40kDa (U5); Component of the U5 small nuclear ribonucleoprotein (snRNP) complex. The U5 snRNP is part of the spliceosome, a multiprotein complex that catalyzes the removal of introns from pre-messenger RNAs

cell division cycle and apoptosis regulator 1

small nuclear ribonucleoprotein polypeptide A; Binds stem loop II of U1 snRNA. It is the first snRNP to interact with pre-mRNA. This interaction is required for the subsequent binding of U2 snRNP and the U4/U6/U5 tri-snRNP. In a snRNP-free form (SF-A) may be involved in coupled pre-mRNA splicing and polyadenylation process. Binds preferentially to the 5’-UGCAC-3’ motif in vitro

cell division cycle and apoptosis regulator 1

small nuclear ribonucleoprotein polypeptide A’; This protein is associated with sn-RNP U2. It helps the A’ protein to bind stem loop IV of U2 snRNA

cell division cycle and apoptosis regulator 1

small nuclear ribonucleoprotein polypeptide B; Involved in pre-mRNA splicing. This protein is associated with snRNP U2. It binds stem loop IV of U2 snRNA only in presence of the U2A’ protein

cell division cycle and apoptosis regulator 1

small nuclear ribonucleoprotein D3 polypeptide 18kDa; Appears to function in the U7 snRNP complex that is involved in histone 3’-end processing. Binds to the downstream cleavage product (DCP) of histone pre-mRNA in a U7 snRNP dependent manner

cell division cycle and apoptosis regulator 1

small nuclear ribonucleoprotein polypeptide F; Appears to function in the U7 snRNP complex that is involved in histone 3’-end processing. Associated with snRNP U1, U2, U4/U6 and U5

cell division cycle and apoptosis regulator 1

serine/arginine-rich splicing factor 1; Plays a role in preventing exon skipping, ensuring the accuracy of splicing and regulating alternative splicing. Interacts with other spliceosomal components, via the RS domains, to form a bridge between the 5’- and 3’-splice site binding components, U1 snRNP and U2AF. Can stimulate binding of U1 snRNP to a 5’-splice site-containing pre-mRNA. Binds to purine-rich RNA sequences, either the octamer, 5’-RGAAGAAC-3’ (r=A or G) or the decamers, AGGACAGAGC/AGGACGAAGC. Binds preferentially to the 5’- CGAGGCG-3’ motif in vitro. Three copies of the octame [...]