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PRP45 PRP45 ECM2 ECM2 NTC20 NTC20 BUD31 BUD31 CWC2 CWC2 SLU7 SLU7 CWC15 CWC15 CDC40 CDC40 SYF1 SYF1 CWC21 CWC21 PRP22 PRP22 BUD13 BUD13 PRP18 PRP18 SYF2 SYF2 CWC22 CWC22 PRP8 PRP8 IST3 IST3 ISY1 ISY1 YJU2 YJU2 SNU114 SNU114 PRP16 PRP16 PRP19 PRP19 PML1 PML1 CLF1 CLF1 CWC24 CWC24 CEF1 CEF1 CWC25 CWC25 PRP2 PRP2 SPP2 SPP2 CWC27 CWC27 PRP46 PRP46 SNT309 SNT309
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Network nodes represent proteins
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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colored nodes:
query proteins and first shell of interactors
white nodes:
second shell of interactors
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empty nodes:
proteins of unknown 3D structure
filled nodes:
a 3D structure is known or predicted
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Edges represent protein-protein associations
associations are meant to be specific and meaningful, i.e. proteins jointly contribute to a shared function; this does not necessarily mean they are physically binding to each other.
Known Interactions
from curated databases
experimentally determined
Predicted Interactions
gene neighborhood
gene fusions
gene co-occurrence
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textmining
co-expression
protein homology
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PRP45Pre-mRNA-processing protein 45; Protein required for pre-mRNA splicing; associates with the spliceosome and interacts with splicing factors Prp22p and Prp46p; orthologous to human transcriptional coactivator SKIP and can activate transcription of a reporter gene. (379 aa)
ECM2Pre-mRNA-splicing factor SLT11; Pre-mRNA splicing factor; facilitates the cooperative formation of U2/U6 helix II in association with stem II in the spliceosome, function may be regulated by Slu7p; Belongs to the SLT11 family. (364 aa)
NTC20Pre-mRNA-splicing factor NTC20; Member of the NineTeen Complex (NTC); this complex contains Prp19p and stabilizes U6 snRNA in catalytic forms of the spliceosome containing U2, U5, and U6 snRNAs. (140 aa)
BUD31Pre-mRNA-splicing factor BUD31; Component of the SF3b subcomplex of the U2 snRNP; increases efficiency of first and second step pre-mRNA splicing; diploid mutants display a random budding pattern instead of the wild-type bipolar pattern; facilitates passage through G1/S Start, but is not required for G2/M transition or exit from mitosis. (157 aa)
CWC2Pre-mRNA-splicing factor CWC2; Member of the NineTeen Complex (NTC); this complex contains Prp19p and stabilizes U6 snRNA in catalytic forms of the spliceosome containing U2, U5, and U6 snRNAs; binds directly to U6 snRNA; similar to S. pombe Cwf2; Belongs to the RRM CWC2 family. (339 aa)
SLU7Pre-mRNA-splicing factor SLU7; RNA splicing factor; required for ATP-independent portion of 2nd catalytic step of spliceosomal RNA splicing; interacts with Prp18p; contains zinc knuckle domain; Belongs to the SLU7 family. (382 aa)
CWC15Pre-mRNA-splicing factor CWC15; Non-essential protein involved in pre-mRNA splicing; component of a complex containing Cef1p; has similarity to S. pombe Cwf15p; Belongs to the CWC15 family. (175 aa)
CDC40Pre-mRNA-processing factor 17; Pre-mRNA splicing factor; important for catalytic step II of pre-mRNA splicing and plays a role in cell cycle progression, particularly at the G1/S phase transition; required for DNA synthesis during mitosis and meiosis; has WD repeats; thermosensitivity of the cdc40 null mutant is functionally complemented by a chimeric construct containing the N-terminal 156 amino acids of yeast Cdc40p fused to the C-terminal two thirds (297 amino acids) of human CDC40. (455 aa)
SYF1Pre-mRNA-splicing factor SYF1; Member of the NineTeen Complex (NTC); that contains Prp19p and stabilizes U6 snRNA in catalytic forms of the spliceosome containing U2, U5, and U6 snRNAs; null mutant has splicing defect and arrests in G2/M; relocalizes to the cytosol in response to hypoxia; homologs in human and C. elegans. (859 aa)
CWC21Pre-mRNA-splicing factor CWC21; Protein involved in RNA splicing by the spliceosome; component of a complex containing Cef1p; interacts genetically with ISY1 and BUD13; may bind RNA; has similarity to S. pombe Cwf21p; Belongs to the CWC21 family. (135 aa)
PRP22DEAH-box RNA-dependent ATPase/ATP-dependent RNA helicase; associates with lariat intermediates before the second catalytic step of splicing; mediates ATP-dependent mRNA release from the spliceosome and unwinds RNA duplexes; required for proofreading the exon ligation reaction. (1145 aa)
BUD13Pre-mRNA-splicing factor CWC26; Subunit of the RES complex; RES complex is required for nuclear pre-mRNA retention and splicing; involved in bud-site selection; diploid mutants display a unipolar budding pattern instead of the wild-type bipolar pattern due to a specific defect in MATa1 pre-mRNA splicing which leads to haploid gene expression in diploids; Belongs to the CWC26 family. (266 aa)
PRP18Pre-mRNA-splicing factor 18; Splicing factor and component of snRNP U5; factor involved in the positioning of the 3' splice site during the second catalytic step of splicing; interacts with Slu7p. (251 aa)
SYF2Pre-mRNA-splicing factor SYF2; Member of the NineTeen Complex (NTC); NTC contains Prp19p and stabilizes U6 snRNA in catalytic forms of the spliceosome containing U2, U5, and U6 snRNAs; relocalizes to the cytosol in response to hypoxia; isy1 syf2 cells have defective spindles activiating cell cycle arrest. (215 aa)
CWC22Pre-mRNA-splicing factor CWC22; Spliceosome-associated protein that is required for pre-mRNA splicing; necessary for Prp2p function at the first catalytic step of splicing; has similarity to S. pombe Cwf22p; CWC22 is an essential protein. (577 aa)
PRP8Pre-mRNA-splicing factor 8; Component of U4/U6-U5 snRNP complex; involved in second catalytic step of splicing; participates in spliceosomal assembly through its interaction with U1 snRNA; largest and most evolutionarily conserved protein of the spliceosome; mutations in human ortholog, PRPF8, cause Retinitis pigmentosa and missplicing in Myelodysplastic syndrome; mouse ortholog interacts with androgen receptor and may have a role in prostate cancer. (2413 aa)
IST3Component of the U2 snRNP; required for the first catalytic step of splicing and for spliceosomal assembly; interacts with Rds3p and is required for Mer1p-activated splicing; diploid mutants have a specific defect in MATa1 pre-mRNA splicing which leads to haploid gene expression in diploids; Belongs to the IST3 family. (148 aa)
ISY1Pre-mRNA-splicing factor ISY1; Member of the NineTeen Complex (NTC); NTC contains Prp19p and stabilizes U6 snRNA in catalytic forms of spliceosome containing U2, U5, and U6 snRNAs; interacts with Prp16p to modulate splicing fidelity; isy1 syf2 cells have defective spindles. (235 aa)
YJU2Splicing factor YJU2; Essential protein required for pre-mRNA splicing; associates transiently with the spliceosomal NTC ("nineteen complex") and acts after Prp2p to promote the first catalytic reaction of splicing. (278 aa)
SNU114Pre-mRNA-splicing factor SNU114; GTPase component of U5 snRNP involved in mRNA splicing via spliceosome; binds directly to U5 snRNA; proposed to be involved in conformational changes of the spliceosome; similarity to ribosomal translocation factor EF-2. (1008 aa)
PRP16DEAH-box RNA helicase involved in second catalytic step of splicing and in exon ligation; exhibits ATP-dependent RNA unwinding activity; mediates the release of Yju2p and Cwc25p in the second step; in the absence of ATP, stabilizes the binding of Cwc25p to the spliceosome in the first catalytic step; missense mutation in human ortholog DHX38 associated with early-onset retinitis pigmentosa; Belongs to the DEAD box helicase family. DEAH subfamily. PRP16 sub-subfamily. (1071 aa)
PRP19Pre-mRNA-processing factor 19; Splicing factor associated with the spliceosome; contains a U-box, a motif found in a class of ubiquitin ligases, and a WD40 domain; relocalizes to the cytosol in response to hypoxia; Belongs to the WD repeat PRP19 family. (503 aa)
PML1Pre-mRNA leakage protein 1; Subunit of the RES complex; RES complex is required for nuclear retention of unspliced pre-mRNAs; acts in the same pathway as Pml39p and Mlp1p. (204 aa)
CLF1Pre-mRNA-splicing factor CLF1; Member of the NineTeen Complex (NTC); this complex contains Prp19p and stabilizes U6 snRNA in catalytic forms of the spliceosome containing U2, U5, and U6 snRNAs; homolog of Drosophila crooked neck protein; interacts with U1 snRNP proteins. (687 aa)
CWC24Pre-mRNA-splicing factor CWC24; General splicing factor; required for stable U2 snRNP binding to primary transcripts; essential for the first step of splicing; component of the pre-catalytic spliceosome complex containing Cef1p; similar to S. pombe Cwf24p; Belongs to the CWC24 family. (259 aa)
CEF1Pre-mRNA-splicing factor CEF1; Essential splicing factor; associated with Prp19p and the spliceosome, contains an N-terminal c-Myb DNA binding motif necessary for cell viability but not for Prp19p association, evolutionarily conserved and homologous to S. pombe Cdc5p. (590 aa)
CWC25Pre-mRNA-splicing factor CWC25; Splicing factor required for the first step of pre-mRNA splicing; binding to the spliceosome requires Prp2p and Yju2p; heat-stable protein; has similarity to S. pombe Cwf25p; Belongs to the CWC25 family. (179 aa)
PRP2Pre-mRNA-splicing factor ATP-dependent RNA helicase-like protein PRP2; RNA-dependent DExD/H-box ATPase; required for activation of spliceosome before first transesterification step in RNA splicing; implicated in rearranging and proofreading snRNA structure in catalytic activation of spliceosome; ortholog of human protein DHX16. (876 aa)
SPP2Pre-mRNA-splicing factor SPP2; Essential protein that promotes the first step of splicing; required for the final stages of spliceosome maturation and activation; interacts with Prp2p, which may release Spp2p from the spliceosome following the first cleavage reaction; stimulates Prp2p ATPase activity; Belongs to the SPP2 family. (185 aa)
CWC27Peptidyl-prolyl isomerase CWC27; Component of a complex containing Cef1p; putatively involved in pre-mRNA splicing; has similarity to S. pombe Cwf27p; protein abundance increases in response to DNA replication stress. (301 aa)
PRP46Pre-mRNA-splicing factor PRP46; Member of the NineTeen Complex (NTC); this complex contains Prp19p and stabilizes U6 snRNA in catalytic forms of the spliceosome containing U2, U5, and U6 snRNAs. (451 aa)
SNT309Pre-mRNA-splicing factor SNT309; Member of the NineTeen Complex (NTC); this complex contains Prp19p and stabilizes U6 snRNA in catalytic forms of the spliceosome containing U2, U5, and U6 snRNAs; interacts physically and genetically with Prp19p. (175 aa)
Your Current Organism:
Saccharomyces cerevisiae
NCBI taxonomy Id: 4932
Other names: ATCC 18824, Candida robusta, Mycoderma cerevisiae, NRRL Y-12632, S. cerevisiae, Saccharomyces capensis, Saccharomyces italicus, Saccharomyces oviformis, Saccharomyces uvarum var. melibiosus, yeast
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