Entry Database : EMDB / ID : EMD-6864 Structure visualization Downloads & linksTitle The Cryo-EM Structure of Human Catalytic Step I Spliceosome (C complex) at 4.1 angstrom resolution Map data Details SampleComplex : Human Catalytic Step I SpliceosomeProtein or peptide : x 41 typesRNA : x 4 typesLigand : x 6 types Details Keywords Structure of a Human Catalytic Step I Spliceosome / SPLICINGFunction / homology Function and homology informationFunction Domain/homology Component
exon-exon junction subcomplex mago-y14 / negative regulation of selenocysteine incorporation / regulation of nuclear-transcribed mRNA catabolic process, nonsense-mediated decay / post-spliceosomal complex / cellular response to selenite ion / selenocysteine insertion sequence binding / exon-exon junction complex / regulation of translation at postsynapse, modulating synaptic transmission / regulation of retinoic acid receptor signaling pathway / post-mRNA release spliceosomal complex ... exon-exon junction subcomplex mago-y14 / negative regulation of selenocysteine incorporation / regulation of nuclear-transcribed mRNA catabolic process, nonsense-mediated decay / post-spliceosomal complex / cellular response to selenite ion / selenocysteine insertion sequence binding / exon-exon junction complex / regulation of translation at postsynapse, modulating synaptic transmission / regulation of retinoic acid receptor signaling pathway / post-mRNA release spliceosomal complex / U2 snRNP binding / intracellular mRNA localization / U7 snRNA binding / negative regulation of excitatory postsynaptic potential / histone pre-mRNA DCP binding / U7 snRNP / 3'-5' RNA helicase activity / generation of catalytic spliceosome for first transesterification step / Z-decay: degradation of maternal mRNAs by zygotically expressed factors / histone pre-mRNA 3'end processing complex / alternative mRNA splicing, via spliceosome / cis assembly of pre-catalytic spliceosome / regulation of vitamin D receptor signaling pathway / SLBP independent Processing of Histone Pre-mRNAs / SLBP Dependent Processing of Replication-Dependent Histone Pre-mRNAs / regulation of mRNA processing / Deadenylation of mRNA / spliceosome conformational change to release U4 (or U4atac) and U1 (or U11) / nuclear retinoic acid receptor binding / embryonic brain development / protein methylation / U12-type spliceosomal complex / poly(A) binding / 7-methylguanosine cap hypermethylation / M-decay: degradation of maternal mRNAs by maternally stored factors / U1 snRNP binding / RNA splicing, via transesterification reactions / mRNA 3'-end processing / sno(s)RNA-containing ribonucleoprotein complex / methylosome / pICln-Sm protein complex / embryonic cranial skeleton morphogenesis / regulation of mRNA splicing, via spliceosome / oocyte development / C2H2 zinc finger domain binding / U2-type catalytic step 1 spliceosome / positive regulation of mRNA splicing, via spliceosome / pre-mRNA binding / snRNP binding / small nuclear ribonucleoprotein complex / telomerase holoenzyme complex / SMN-Sm protein complex / P granule / telomerase RNA binding / spliceosomal tri-snRNP complex / positive regulation by host of viral transcription / U2-type precatalytic spliceosome / U2-type spliceosomal complex / positive regulation of vitamin D receptor signaling pathway / commitment complex / mRNA cis splicing, via spliceosome / U2-type prespliceosome assembly / Transport of Mature mRNA derived from an Intron-Containing Transcript / nuclear vitamin D receptor binding / Notch binding / Regulation of gene expression in late stage (branching morphogenesis) pancreatic bud precursor cells / U2-type catalytic step 2 spliceosome / RUNX3 regulates NOTCH signaling / NOTCH4 Intracellular Domain Regulates Transcription / U4 snRNP / U2 snRNP / RNA Polymerase II Transcription Termination / nuclear-transcribed mRNA catabolic process, nonsense-mediated decay / exploration behavior / U1 snRNP / NOTCH3 Intracellular Domain Regulates Transcription / U2-type prespliceosome / WD40-repeat domain binding / protein peptidyl-prolyl isomerization / inner cell mass cell proliferation / regulation of alternative mRNA splicing, via spliceosome / positive regulation of neurogenesis / ubiquitin-ubiquitin ligase activity / nuclear androgen receptor binding / K63-linked polyubiquitin modification-dependent protein binding / precatalytic spliceosome / lipid biosynthetic process / cyclosporin A binding / generation of catalytic spliceosome for second transesterification step / Notch-HLH transcription pathway / Formation of paraxial mesoderm / positive regulation of transforming growth factor beta receptor signaling pathway / SMAD binding / spliceosomal complex assembly / mitotic G2 DNA damage checkpoint signaling / associative learning / mRNA Splicing - Minor Pathway / negative regulation of DNA damage response, signal transduction by p53 class mediator / mRNA 3'-splice site recognition / spliceosomal tri-snRNP complex assembly Similarity search - Function CBF1-interacting co-repressor CIR, N-terminal domain / Pre-mRNA splicing factor / : / N-terminal domain of CBF1 interacting co-repressor CIR / Pre-mRNA splicing factor / N-terminal domain of CBF1 interacting co-repressor CIR / Protein CASC3 / CASC3/Barentsz eIF4AIII binding / CASC3/Barentsz eIF4AIII binding / Btz domain ... CBF1-interacting co-repressor CIR, N-terminal domain / Pre-mRNA splicing factor / : / N-terminal domain of CBF1 interacting co-repressor CIR / Pre-mRNA splicing factor / N-terminal domain of CBF1 interacting co-repressor CIR / Protein CASC3 / CASC3/Barentsz eIF4AIII binding / CASC3/Barentsz eIF4AIII binding / Btz domain / Splicing factor Yju2 / Saf4/Yju2 protein / Saf4/Yju2 protein / Mago nashi protein / RNA-binding motif protein 8 / RBM8, RNA recognition motif / Mago nashi superfamily / Mago nashi protein / Pre-mRNA-splicing factor Isy1 / Pre-mRNA-splicing factor Isy1 superfamily / Isy1-like splicing family / Prp19 WD40 domain / : / : / : / Intron-binding protein aquarius, beta-barrel / Intron-binding protein aquarius insert domain / Peptidyl-prolyl cis-trans isomerase E / Peptidyl-prolyl cis-trans isomerase E, RNA recognition motif / Pre-mRNA-splicing factor SPF27 / Breast carcinoma amplified sequence 2 (BCAS2) / CWF11 family / Intron-binding protein aquarius, N-terminal / Intron-binding protein aquarius N-terminal / mRNA splicing factor SYF2 / SYF2 splicing factor / Helix hairpin bin domain superfamily / : / : / U2 small nuclear ribonucleoprotein B'', RNA recognition motif 2 / U2 small nuclear ribonucleoprotein B'', RNA recognition motif 1 / mRNA splicing factor Cwf21 domain / cwf21 domain / Pre-mRNA-processing factor 17 / U-box domain / : / : / Pre-mRNA-splicing factor SYF1 middle HAT repeat / Pre-mRNA-splicing factor 19 / Pre-mRNA-processing factor 19 / Prp19/Pso4-like / G10 protein signature 2. / Cyclophilin-type peptidyl-prolyl cis-trans isomerase, cyclophilin A-like / BUD31/G10-related, conserved site / G10 protein signature 1. / : / Pre-mRNA-splicing factor Syf1/CRNKL1 C-terminal HAT repeat / DNA2/NAM7 helicase, helicase domain / : / AAA domain / STL11, N-terminal / : / Pre-mRNA-splicing factor Syf1/CNRKL1 N-terminal HAT repeat / SKI-interacting protein SKIP, SNW domain / SKI-interacting protein, SKIP / SKIP/SNW domain / Pre-mRNA-splicing factor Cwf15/Cwc15 / Cwf15/Cwc15 cell cycle control protein / WD repeat Prp46/PLRG1-like / Pre-mRNA-splicing factor Cwc2/Slt11 / : / G10 protein / Pre-mRNA-splicing factor BUD31 / Pre-mRNA splicing factor component Cdc5p/Cef1, C-terminal / : / : / pre-mRNA splicing factor component / DNA2/NAM7-like helicase / : / Initiation factor eIF-4 gamma, MA3 / MA3 domain / MI domain profile. / Domain in DAP-5, eIF4G, MA-3 and other proteins. / MIF4G domain / Small ribonucleoprotein associated, SmB/SmN / Myb-like DNA-binding domain / Spt5 C-terminal domain / Spt5 C-terminal nonapeptide repeat binding Spt4 / U2 small nuclear ribonucleoprotein A' / Middle domain of eukaryotic initiation factor 4G (eIF4G) / MIF4G-like, type 3 / Small nuclear ribonucleoprotein D1 / U-box domain profile. / U2A'/phosphoprotein 32 family A, C-terminal / occurring C-terminal to leucine-rich repeats / Brr2, N-terminal helicase PWI domain / : / N-terminal helicase PWI domain / Pre-mRNA-splicing helicase BRR2 plug domain / Modified RING finger domain Similarity search - Domain/homology Protein CASC3 / Pleiotropic regulator 1 / RNA helicase aquarius / Pre-mRNA-processing factor 17 / U5 small nuclear ribonucleoprotein 200 kDa helicase / Pre-mRNA-splicing factor SPF27 / Pre-mRNA-splicing factor SYF2 / U2 small nuclear ribonucleoprotein B'' / U2 small nuclear ribonucleoprotein A' / Small nuclear ribonucleoprotein-associated proteins B and B' ... Protein CASC3 / Pleiotropic regulator 1 / RNA helicase aquarius / Pre-mRNA-processing factor 17 / U5 small nuclear ribonucleoprotein 200 kDa helicase / Pre-mRNA-splicing factor SPF27 / Pre-mRNA-splicing factor SYF2 / U2 small nuclear ribonucleoprotein B'' / U2 small nuclear ribonucleoprotein A' / Small nuclear ribonucleoprotein-associated proteins B and B' / Eukaryotic initiation factor 4A-III / Protein BUD31 homolog / Small nuclear ribonucleoprotein E / Small nuclear ribonucleoprotein F / Small nuclear ribonucleoprotein G / Small nuclear ribonucleoprotein Sm D1 / Small nuclear ribonucleoprotein Sm D2 / Small nuclear ribonucleoprotein Sm D3 / Peptidyl-prolyl cis-trans isomerase G / SNW domain-containing protein 1 / 116 kDa U5 small nuclear ribonucleoprotein component / Pre-mRNA-processing-splicing factor 8 / Pre-mRNA-splicing factor ATP-dependent RNA helicase PRP16 / Protein mago nashi homolog 2 / Peptidylprolyl isomerase domain and WD repeat-containing protein 1 / U5 small nuclear ribonucleoprotein 40 kDa protein / Cell division cycle 5-like protein / Splicing factor YJU2 / Crooked neck-like protein 1 / Pre-mRNA-splicing factor CWC22 homolog / Pre-mRNA-splicing factor SYF1 / Pre-mRNA-splicing factor RBM22 / Pre-mRNA-splicing factor CWC25 homolog / Spliceosome-associated protein CWC15 homolog / Pre-mRNA-splicing factor ISY1 homolog / Pre-mRNA-processing factor 19 / Peptidyl-prolyl cis-trans isomerase E / Serine/arginine repetitive matrix protein 2 / Peptidyl-prolyl cis-trans isomerase-like 1 / RNA-binding protein 8A Similarity search - ComponentBiological species Homo sapiens (human)Method single particle reconstruction / cryo EM / Resolution : 4.1 Å Details AuthorsZhan X / Yan C Funding support China, 3 items Details Hide detailsOrganization Grant number Country Ministry of Science and Technology (China) 2014ZX09507003006 China National Natural Science Foundation of China 31130002 China National Natural Science Foundation of China 31321062 China
CitationJournal : Science / Year : 2018Title : Structure of a human catalytic step I spliceosome.Authors : Xiechao Zhan / Chuangye Yan / Xiaofeng Zhang / Jianlin Lei / Yigong Shi / Abstract : Splicing by the spliceosome involves branching and exon ligation. The branching reaction leads to the formation of the catalytic step I spliceosome (C complex). Here we report the cryo-electron ... Splicing by the spliceosome involves branching and exon ligation. The branching reaction leads to the formation of the catalytic step I spliceosome (C complex). Here we report the cryo-electron microscopy structure of the human C complex at an average resolution of 4.1 angstroms. Compared with the C complex, the human complex contains 11 additional proteins. The step I splicing factors CCDC49 and CCDC94 (Cwc25 and Yju2 in , respectively) closely interact with the DEAH-family adenosine triphosphatase/helicase Prp16 and bridge the gap between Prp16 and the active-site RNA elements. These features, together with structural comparison of the human C and C* complexes, provide mechanistic insights into ribonucleoprotein remodeling and allow the proposition of a working mechanism for the C-to-C* transition. History Deposition Dec 14, 2017 - Header (metadata) release Aug 8, 2018 - Map release Aug 8, 2018 - Update Oct 23, 2024 - Current status Oct 23, 2024 Processing site : PDBj / Status : Released
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