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NHP2L1 NHP2L1 POLR2I POLR2I CSTF1 CSTF1 POLR2E POLR2E PABPN1 PABPN1 POLR2C POLR2C HNRNPL HNRNPL SF3B14 SF3B14 SNRPE SNRPE PTBP1 PTBP1 SNRNP70 SNRNP70 SF3A3 SF3A3 SNRPD1 SNRPD1 SNRPF SNRPF SNRPD3 SNRPD3 SNRPD2 SNRPD2 SNRPB SNRPB PHF5A PHF5A SNRPA1 SNRPA1 SF3B5 SF3B5 SNRPA SNRPA SFPQ SFPQ C19orf43 C19orf43 PRPF19 PRPF19 CDC5L CDC5L AGMAT AGMAT
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splice isoforms or post-translational modifications are collapsed, i.e. each node represents all the proteins produced by a single, protein-coding gene locus.
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small nodes:
protein of unknown 3D structure
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some 3D structure is known or predicted
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query proteins and first shell of interactors
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second shell of interactors
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POLR2Epolymerase (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 [...] (210 aa)
SNRPD3small 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 (126 aa)
NHP2L1NHP2 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 (128 aa)
PHF5APHD 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 (110 aa)
PABPN1poly(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 [...] (306 aa)
CSTF1cleavage 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 (431 aa)
POLR2Cpolymerase (RNA) II (DNA directed) polypeptide C, 33kDa; 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. RPB3 is part of the core element with the central large cleft and the clamp element that moves to open and close the cleft (By similarity) (275 aa)
HNRNPLheterogeneous nuclear ribonucleoprotein L; This protein is a component of the heterogeneous nuclear ribonucleoprotein (hnRNP) complexes which provide the substrate for the processing events that pre-mRNAs undergo before becoming functional, translatable mRNAs in the cytoplasm. Is associated with most nascent transcripts including those of the landmark giant loops of amphibian lampbrush chromosomes. Associates, together with APEX1, to the negative calcium responsive element (nCaRE) B2 of the APEX2 promoter (589 aa)
POLR2Ipolymerase (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) (125 aa)
PRPF19PRP19/PSO4 pre-mRNA processing factor 19 homolog (S. cerevisiae); Plays a role in DNA double-strand break (DSB) repair. Binds double-stranded DNA in a sequence-nonspecific manner. Acts as a structural component of the nuclear framework. May also serve as a support for spliceosome binding and activity. Essential for spliceosome assembly in a oligomerization-dependent manner and might also be important for spliceosome stability. May have E3 ubiquitin ligase activity. The PSO4 complex is required in the DNA interstrand cross-links (ICLs) repair process. Component of the PRP19-CDC5L comple [...] (504 aa)
SF3B14Pre-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 (125 aa)
C19orf43chromosome 19 open reading frame 43 (176 aa)
SNRPAsmall 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 (282 aa)
SNRPA1small 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 (255 aa)
SNRPFsmall 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 (86 aa)
SNRPD1small nuclear ribonucleoprotein D1 polypeptide 16kDa; May act as a charged protein scaffold to promote snRNP assembly or strengthen snRNP-snRNP interactions through nonspecific electrostatic contacts with RNA (119 aa)
SNRPD2small nuclear ribonucleoprotein D2 polypeptide 16.5kDa; Required for pre-mRNA splicing. Required for snRNP biogenesis (By similarity) (118 aa)
PTBP1polypyrimidine tract binding protein 1; Plays a role in pre-mRNA splicing and in the regulation of alternative splicing events. Activates exon skipping of its own pre-mRNA during muscle cell differentiation. Binds to the polypyrimidine tract of introns. May promote RNA looping when bound to two separate polypyrimidine tracts in the same pre-mRNA. May promote the binding of U2 snRNP to pre-mRNA. Cooperates with RAVER1 to modulate switching between mutually exclusive exons during maturation of the TPM1 pre-mRNA. Represses the splicing of MAPT/Tau exon 10 (557 aa)
SFPQsplicing factor proline/glutamine-rich; DNA- and RNA binding protein, involved in several nuclear processes. Essential pre-mRNA splicing factor required early in spliceosome formation and for splicing catalytic step II, probably as a heteromer with NONO. Binds to pre-mRNA in spliceosome C complex, and specifically binds to intronic polypyrimidine tracts. Involved in regulation of signal-induced alternative splicing. During splicing of PTPRC/CD45, a phosphorylated form is sequestered by THRAP3 from the pre-mRNA in resting T-cells; T-cell activation and subsequent reduced phosphorylation [...] (707 aa)
SF3B5splicing factor 3b, subunit 5, 10kDa (86 aa)
CDC5LCDC5 cell division cycle 5-like (S. pombe); DNA-binding protein involved in cell cycle control. May act as a transcription activator. Component of the PRP19-CDC5L complex that forms an integral part of the spliceosome and is required for activating pre-mRNA splicing (802 aa)
SF3A3splicing factor 3a, subunit 3, 60kDa; 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 (501 aa)
AGMATagmatine ureohydrolase (agmatinase) (352 aa)
SNRPEsmall nuclear ribonucleoprotein polypeptide E; 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 (92 aa)
SNRPBsmall nuclear ribonucleoprotein polypeptides B and B1; 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. May have a functional role in the pre-mRNA splicing or in snRNP structure. Binds to the downstream cleavage product (DCP) of histone pre-mRNA in a U7 snRNP dependent manner (By similarity) (240 aa)
SNRNP70small nuclear ribonucleoprotein 70kDa (U1) (437 aa)
Your Current Organism:
Homo sapiens
NCBI taxonomy Id: 9606
Other names: H. sapiens, Homo, Homo sapiens, human, man
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