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- PDB-7w5b: The cryo-EM structure of human C* complex -

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Basic information

Entry
Database: PDB / ID: 7w5b
TitleThe cryo-EM structure of human C* complex
Components
  • (Peptidyl-prolyl cis-trans ...) x 2
  • (Pre-mRNA-processing factor ...) x 2
  • (Pre-mRNA-splicing factor ...) x 6
  • (Pre-mRNAPrimary transcript) x 2
  • (Small nuclear ribonucleoprotein ...SnRNP) x 6
  • (U2 small nuclear ribonucleoprotein ...) x 2
  • (U5 small nuclear ribonucleoprotein ...) x 2
  • 116 kDa U5 small nuclear ribonucleoprotein component
  • ATP-dependent RNA helicase DHX8
  • Cactin
  • Cell division cycle 5-like protein
  • Crooked neck-like protein 1
  • Eukaryotic initiation factor 4A-III
  • NF-kappa-B-activating protein
  • PRKR-interacting protein 1
  • Pleiotropic regulator 1
  • Pre-mRNA-processing-splicing factor 8
  • Protein BUD31 homolog
  • Protein CASC3
  • Protein FAM32A
  • Protein mago nashi homolog
  • RNA helicase aquarius
  • RNA-binding protein 8A
  • SNW domain-containing protein 1
  • Serine/arginine repetitive matrix protein 2
  • Small nuclear ribonucleoprotein-associated proteins B and B'
  • Spliceosome-associated protein CWC15 homolog
  • U2 snRNAU2 spliceosomal RNA
  • U5 snRNAU5 spliceosomal RNA
  • U6 snRNAU6 spliceosomal RNA
KeywordsSPLICING / spliceosome / C* complex / RNA splicing / PRP22 / exon ligation
Function / homology
Function and homology information


second spliceosomal transesterification activity / exon-exon junction subcomplex mago-y14 / negative regulation of selenocysteine incorporation / regulation of nuclear-transcribed mRNA catabolic process, nonsense-mediated decay / spliceosomal complex disassembly / cellular response to selenite ion / selenocysteine insertion sequence binding / exon-exon junction complex / pre-mRNA 3'-splice site binding / granulocyte differentiation ...second spliceosomal transesterification activity / exon-exon junction subcomplex mago-y14 / negative regulation of selenocysteine incorporation / regulation of nuclear-transcribed mRNA catabolic process, nonsense-mediated decay / spliceosomal complex disassembly / cellular response to selenite ion / selenocysteine insertion sequence binding / exon-exon junction complex / pre-mRNA 3'-splice site binding / granulocyte differentiation / post-mRNA release spliceosomal complex / regulation of retinoic acid receptor signaling pathway / negative regulation of toll-like receptor signaling pathway / intracellular mRNA localization / regulation of translation at postsynapse, modulating synaptic transmission / 3'-5' RNA helicase activity / snRNP binding / U2 snRNP binding / U7 snRNA binding / histone pre-mRNA DCP binding / generation of catalytic spliceosome for first transesterification step / renal system process / negative regulation of excitatory postsynaptic potential / U7 snRNP / alternative mRNA splicing, via spliceosome / regulation of vitamin D receptor signaling pathway / Z-decay: degradation of maternal mRNAs by zygotically expressed factors / histone pre-mRNA 3'end processing complex / negative regulation of interleukin-8 production / cis assembly of pre-catalytic spliceosome / regulation of mRNA processing / SLBP independent Processing of Histone Pre-mRNAs / SLBP Dependent Processing of Replication-Dependent Histone Pre-mRNAs / negative regulation of lipopolysaccharide-mediated signaling pathway / Deadenylation of mRNA / embryonic brain development / spliceosome conformational change to release U4 (or U4atac) and U1 (or U11) / protein methylation / U12-type spliceosomal complex / negative regulation of phosphorylation / methylosome / negative regulation of interferon-beta production / nuclear retinoic acid receptor binding / Prp19 complex / 7-methylguanosine cap hypermethylation / positive regulation of androgen receptor activity / poly(A) binding / U1 snRNP binding / pICln-Sm protein complex / M-decay: degradation of maternal mRNAs by maternally stored factors / mRNA 3'-end processing / pre-mRNA binding / ATP-dependent activity, acting on RNA / U2-type catalytic step 1 spliceosome / embryonic cranial skeleton morphogenesis / RNA splicing, via transesterification reactions / small nuclear ribonucleoprotein complex / P granule / sno(s)RNA-containing ribonucleoprotein complex / SMN-Sm protein complex / C2H2 zinc finger domain binding / regulation of mRNA splicing, via spliceosome / spliceosomal tri-snRNP complex / telomerase RNA binding / positive regulation of mRNA splicing, via spliceosome / telomerase holoenzyme complex / mRNA cis splicing, via spliceosome / U2-type spliceosomal complex / positive regulation by host of viral transcription / U2-type precatalytic spliceosome / commitment complex / positive regulation of vitamin D receptor signaling pathway / Transport of Mature mRNA derived from an Intron-Containing Transcript / U2-type prespliceosome assembly / U2-type catalytic step 2 spliceosome / nuclear vitamin D receptor binding / Notch binding / U4 snRNP / Regulation of gene expression in late stage (branching morphogenesis) pancreatic bud precursor cells / RUNX3 regulates NOTCH signaling / U2 snRNP / positive regulation of alpha-beta T cell differentiation / RNA Polymerase II Transcription Termination / NOTCH4 Intracellular Domain Regulates Transcription / U1 snRNP / nuclear-transcribed mRNA catabolic process, nonsense-mediated decay / ubiquitin-ubiquitin ligase activity / WD40-repeat domain binding / NOTCH3 Intracellular Domain Regulates Transcription / exploration behavior / positive regulation of neurogenesis / U2-type prespliceosome / lipid biosynthetic process / K63-linked polyubiquitin modification-dependent protein binding / hematopoietic stem cell proliferation / nuclear androgen receptor binding / cyclosporin A binding / negative regulation of type I interferon-mediated signaling pathway / precatalytic spliceosome / regulation of alternative mRNA splicing, via spliceosome
Similarity search - Function
NF-kappa-B-activating protein, C-terminal / NF-kappa-B-activating protein / NF-kappa-B-activating protein C-terminal domain / NF-kappa-B-activating protein / Protein FAM32A / Cactin, central domain / Cactin, C-terminal / FAM32A / Cactus-binding C-terminus of cactin protein / Conserved mid region of cactin ...NF-kappa-B-activating protein, C-terminal / NF-kappa-B-activating protein / NF-kappa-B-activating protein C-terminal domain / NF-kappa-B-activating protein / Protein FAM32A / Cactin, central domain / Cactin, C-terminal / FAM32A / Cactus-binding C-terminus of cactin protein / Conserved mid region of cactin / PRKR-interacting protein 1 / Protein of unknown function (DUF1168) / CASC3/Barentsz eIF4AIII binding / CASC3/Barentsz eIF4AIII binding / Btz domain / Pre-mRNA-splicing factor SLU7 domain / Pre-mRNA-splicing factor SLU7 / Pre-mRNA splicing Prp18-interacting factor / DHX8/ Prp22, DEXH-box helicase domain / Mago nashi protein / RNA-binding motif protein 8 / RBM8, RNA recognition motif / Mago nashi superfamily / Mago nashi protein / : / : / : / : / Intron-binding protein aquarius, beta-barrel / Intron-binding protein aquarius insert domain / : / 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 / Peptidyl-prolyl cis-trans isomerase E / Peptidyl-prolyl cis-trans isomerase E, RNA recognition motif / mRNA splicing factor SYF2 / SYF2 splicing factor / Cyclophilin-type peptidyl-prolyl cis-trans isomerase, cyclophilin A-like / mRNA splicing factor Cwf21 domain / cwf21 domain / Cactus-binding C-terminus of cactin protein / Pre-mRNA-processing factor 17 / : / STL11, N-terminal / U2 small nuclear ribonucleoprotein B'', RNA recognition motif 2 / U2 small nuclear ribonucleoprotein B'', RNA recognition motif 1 / Pre-mRNA-splicing factor 19 / Pre-mRNA-processing factor 19 / : / Prp19/Pso4-like / DNA2/NAM7 helicase, helicase domain / DNA2/NAM7-like helicase / AAA domain / WD repeat Prp46/PLRG1-like / U-box domain / BUD31/G10-related, conserved site / : / : / G10 protein signature 1. / G10 protein signature 2. / SKI-interacting protein SKIP, SNW domain / SKI-interacting protein, SKIP / SKIP/SNW domain / Myb-like DNA-binding domain / Pre-mRNA-splicing factor Cwf15/Cwc15 / HAT (Half-A-TPR) repeat / Cwf15/Cwc15 cell cycle control protein / 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 / 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 / Spt5 C-terminal domain / Spt5 C-terminal nonapeptide repeat binding Spt4 / Small nuclear ribonucleoprotein D1 / U-box domain profile. / Middle domain of eukaryotic initiation factor 4G (eIF4G) / MIF4G-like, type 3 / Modified RING finger domain / U-box domain / Zinc finger, CCCH-type superfamily / U2A'/phosphoprotein 32 family A, C-terminal / occurring C-terminal to leucine-rich repeats / Leucine-rich repeat / : / Helicase associated domain (HA2), ratchet-like / Brr2, N-terminal helicase PWI domain / : / N-terminal helicase PWI domain / Pre-mRNA-splicing helicase BRR2 plug domain / zinc finger
Similarity search - Domain/homology
ADENOSINE-5'-TRIPHOSPHATE / GUANOSINE-5'-TRIPHOSPHATE / INOSITOL HEXAKISPHOSPHATE / : / : / RNA / RNA (> 10) / RNA (> 100) / Protein CASC3 / Pleiotropic regulator 1 ...ADENOSINE-5'-TRIPHOSPHATE / GUANOSINE-5'-TRIPHOSPHATE / INOSITOL HEXAKISPHOSPHATE / : / : / RNA / RNA (> 10) / RNA (> 100) / 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 SLU7 / 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 / Protein mago nashi 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 / SNW domain-containing protein 1 / ATP-dependent RNA helicase DHX8 / 116 kDa U5 small nuclear ribonucleoprotein component / Pre-mRNA-processing-splicing factor 8 / NF-kappa-B-activating protein / Splicing factor Cactin / U5 small nuclear ribonucleoprotein 40 kDa protein / Cell division cycle 5-like protein / Crooked neck-like protein 1 / PRKR-interacting protein 1 / Pre-mRNA-splicing factor CWC22 homolog / Pre-mRNA-splicing factor SYF1 / Pre-mRNA-splicing factor RBM22 / Spliceosome-associated protein CWC15 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 / Protein FAM32A / RNA-binding protein 8A
Similarity search - Component
Biological speciesHomo sapiens (human)
unidentified adenovirus
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4.3 Å
AuthorsZhan, X. / Lu, Y. / Shi, Y.
Funding support China, 1items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC) China
CitationJournal: Mol Cell / Year: 2022
Title: Mechanism of exon ligation by human spliceosome.
Authors: Xiechao Zhan / Yichen Lu / Xiaofeng Zhang / Chuangye Yan / Yigong Shi /
Abstract: Pre-mRNA splicing involves two sequential reactions: branching and exon ligation. The C complex after branching undergoes remodeling to become the C complex, which executes exon ligation. Here, we ...Pre-mRNA splicing involves two sequential reactions: branching and exon ligation. The C complex after branching undergoes remodeling to become the C complex, which executes exon ligation. Here, we report cryo-EM structures of two intermediate human spliceosomal complexes, pre-C-I and pre-C-II, both at 3.6 Å. In both structures, the 3' splice site is already docked into the active site, the ensuing 3' exon sequences are anchored on PRP8, and the step II factor FAM192A contacts the duplex between U2 snRNA and the branch site. In the transition of pre-C-I to pre-C-II, the step II factors Cactin, FAM32A, PRKRIP1, and SLU7 are recruited. Notably, the RNA helicase PRP22 is positioned quite differently in the pre-C-I, pre-C-II, and C complexes, suggesting a role in 3' exon binding and proofreading. Together with information on human C and C complexes, our studies recapitulate a molecular choreography of the C-to-C transition, revealing mechanistic insights into exon ligation.
History
DepositionNov 29, 2021Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Jun 22, 2022Provider: repository / Type: Initial release
Revision 1.1Jun 29, 2022Group: Database references / Category: citation / Item: _citation.pdbx_database_id_PubMed / _citation.title
Revision 1.2Aug 17, 2022Group: Database references / Category: citation
Item: _citation.journal_volume / _citation.page_first / _citation.page_last

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Pre-mRNA-processing-splicing factor 8
B: U5 snRNA
C: 116 kDa U5 small nuclear ribonucleoprotein component
D: U5 small nuclear ribonucleoprotein 200 kDa helicase
E: U5 small nuclear ribonucleoprotein 40 kDa protein
F: U6 snRNA
4: Pre-mRNA
G: Pre-mRNA
H: U2 snRNA
I: Pre-mRNA-splicing factor SYF1
J: Crooked neck-like protein 1
K: Pre-mRNA-splicing factor SPF27
L: Cell division cycle 5-like protein
M: Pre-mRNA-splicing factor SYF2
N: Protein BUD31 homolog
O: Pre-mRNA-splicing factor RBM22
P: Spliceosome-associated protein CWC15 homolog
Q: RNA helicase aquarius
R: SNW domain-containing protein 1
S: Peptidyl-prolyl cis-trans isomerase-like 1
T: Pleiotropic regulator 1
U: Serine/arginine repetitive matrix protein 2
V: Pre-mRNA-splicing factor CWC22 homolog
W: Pre-mRNA-processing factor 17
Y: ATP-dependent RNA helicase DHX8
Z: Cactin
2: PRKR-interacting protein 1
z: Protein FAM32A
b: Small nuclear ribonucleoprotein-associated proteins B and B'
y: Peptidyl-prolyl cis-trans isomerase E
a: Small nuclear ribonucleoprotein Sm D3
c: Small nuclear ribonucleoprotein Sm D1
d: Small nuclear ribonucleoprotein Sm D2
f: Small nuclear ribonucleoprotein F
e: Small nuclear ribonucleoprotein E
g: Small nuclear ribonucleoprotein G
q: Pre-mRNA-processing factor 19
r: Pre-mRNA-processing factor 19
s: Pre-mRNA-processing factor 19
t: Pre-mRNA-processing factor 19
h: Small nuclear ribonucleoprotein Sm D3
i: Small nuclear ribonucleoprotein-associated proteins B and B'
j: Small nuclear ribonucleoprotein Sm D1
k: Small nuclear ribonucleoprotein Sm D2
m: Small nuclear ribonucleoprotein F
l: Small nuclear ribonucleoprotein E
n: Small nuclear ribonucleoprotein G
o: U2 small nuclear ribonucleoprotein A'
p: U2 small nuclear ribonucleoprotein B''
1: Pre-mRNA-splicing factor SLU7
v: Protein mago nashi homolog
w: RNA-binding protein 8A
u: Eukaryotic initiation factor 4A-III
x: Protein CASC3
3: NF-kappa-B-activating protein
hetero molecules


Theoretical massNumber of molelcules
Total (without water)3,127,69974
Polymers3,125,33255
Non-polymers2,36719
Water0
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: cross-linking
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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Protein , 20 types, 21 molecules ACJLNPQRTUYZ2zbivwux3

#1: Protein Pre-mRNA-processing-splicing factor 8 / 220 kDa U5 snRNP-specific protein / PRP8 homolog / Splicing factor Prp8 / p220


Mass: 273974.250 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q6P2Q9
#3: Protein 116 kDa U5 small nuclear ribonucleoprotein component / Elongation factor Tu GTP-binding domain-containing protein 2 / SNU114 homolog / hSNU114 / U5 snRNP- ...Elongation factor Tu GTP-binding domain-containing protein 2 / SNU114 homolog / hSNU114 / U5 snRNP-specific protein / 116 kDa / U5-116 kDa


Mass: 109560.625 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q15029
#11: Protein Crooked neck-like protein 1 / Crooked neck homolog / hCrn


Mass: 100610.008 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9BZJ0
#13: Protein Cell division cycle 5-like protein / Cdc5-like protein / Pombe cdc5-related protein


Mass: 92406.883 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q99459
#15: Protein Protein BUD31 homolog / Protein EDG-2 / Protein G10 homolog


Mass: 17032.850 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P41223
#17: Protein Spliceosome-associated protein CWC15 homolog


Mass: 26674.447 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9P013
#18: Protein RNA helicase aquarius / Intron-binding protein of 160 kDa / IBP160


Mass: 171502.453 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O60306, RNA helicase
#19: Protein SNW domain-containing protein 1 / Nuclear protein SkiP / Nuclear receptor coactivator NCoA-62 / Ski-interacting protein


Mass: 61770.648 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q13573
#21: Protein Pleiotropic regulator 1


Mass: 57280.758 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O43660
#22: Protein Serine/arginine repetitive matrix protein 2 / 300 kDa nuclear matrix antigen / Serine/arginine-rich splicing factor-related nuclear matrix ...300 kDa nuclear matrix antigen / Serine/arginine-rich splicing factor-related nuclear matrix protein of 300 kDa / Ser/Arg-related nuclear matrix protein of 300 kDa / Splicing coactivator subunit SRm300 / Tax-responsive enhancer element-binding protein 803 / TaxREB803


Mass: 300255.312 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9UQ35
#25: Protein ATP-dependent RNA helicase DHX8 / DEAH box protein 8 / RNA helicase HRH1


Mass: 139522.312 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q14562, RNA helicase
#26: Protein Cactin / / Renal carcinoma antigen NY-REN-24


Mass: 88860.062 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q8WUQ7
#27: Protein PRKR-interacting protein 1


Mass: 21040.176 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9H875
#28: Protein Protein FAM32A / Ovarian tumor-associated gene 12 / OTAG-12


Mass: 13213.453 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9Y421
#29: Protein Small nuclear ribonucleoprotein-associated proteins B and B' / snRNP-B / Sm protein B/B' / SmB/B'


Mass: 24642.131 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P14678
#41: Protein Protein mago nashi homolog


Mass: 17189.625 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P61326
#42: Protein RNA-binding protein 8A / Binder of OVCA1-1 / BOV-1 / RNA-binding motif protein 8A / RNA-binding protein Y14 / Ribonucleoprotein RBM8A


Mass: 19925.070 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9Y5S9
#43: Protein Eukaryotic initiation factor 4A-III / eIF4A-III / ATP-dependent RNA helicase DDX48 / ATP-dependent RNA helicase eIF4A-3 / DEAD box ...eIF4A-III / ATP-dependent RNA helicase DDX48 / ATP-dependent RNA helicase eIF4A-3 / DEAD box protein 48 / Eukaryotic initiation factor 4A-like NUK-34 / Eukaryotic translation initiation factor 4A isoform 3 / Nuclear matrix protein 265 / hNMP 265


Mass: 46930.961 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P38919, RNA helicase
#44: Protein Protein CASC3 / Cancer susceptibility candidate gene 3 protein / Metastatic lymph node gene 51 protein / MLN 51 / ...Cancer susceptibility candidate gene 3 protein / Metastatic lymph node gene 51 protein / MLN 51 / Protein barentsz / Btz


Mass: 76381.992 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O15234
#45: Protein NF-kappa-B-activating protein /


Mass: 47252.660 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q8N5F7

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RNA chain , 5 types, 5 molecules BF4GH

#2: RNA chain U5 snRNA / U5 spliceosomal RNA


Mass: 37254.855 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: GenBank: 20330981
#6: RNA chain U6 snRNA / U6 spliceosomal RNA


Mass: 34404.438 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human)
#7: RNA chain Pre-mRNA / Primary transcript


Mass: 14729.780 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) unidentified adenovirus
#8: RNA chain Pre-mRNA / Primary transcript


Mass: 55660.688 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) unidentified adenovirus
#9: RNA chain U2 snRNA / U2 spliceosomal RNA


Mass: 60186.445 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: GenBank: 340097

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U5 small nuclear ribonucleoprotein ... , 2 types, 2 molecules DE

#4: Protein U5 small nuclear ribonucleoprotein 200 kDa helicase / Activating signal cointegrator 1 complex subunit 3-like 1 / BRR2 homolog / U5 snRNP-specific 200 ...Activating signal cointegrator 1 complex subunit 3-like 1 / BRR2 homolog / U5 snRNP-specific 200 kDa protein / U5-200KD


Mass: 244823.422 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O75643, RNA helicase
#5: Protein U5 small nuclear ribonucleoprotein 40 kDa protein / U5-40K / 38 kDa-splicing factor / Prp8-binding protein / hPRP8BP / U5 snRNP-specific 40 kDa protein ...U5-40K / 38 kDa-splicing factor / Prp8-binding protein / hPRP8BP / U5 snRNP-specific 40 kDa protein / WD repeat-containing protein 57


Mass: 39359.492 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q96DI7

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Pre-mRNA-splicing factor ... , 6 types, 6 molecules IKMOV1

#10: Protein Pre-mRNA-splicing factor SYF1 / Protein HCNP / XPA-binding protein 2


Mass: 100148.711 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9HCS7
#12: Protein Pre-mRNA-splicing factor SPF27 / Breast carcinoma-amplified sequence 2 / DNA amplified in mammary carcinoma 1 protein / Spliceosome- ...Breast carcinoma-amplified sequence 2 / DNA amplified in mammary carcinoma 1 protein / Spliceosome-associated protein SPF 27


Mass: 26163.420 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O75934
#14: Protein Pre-mRNA-splicing factor SYF2 / CCNDBP1-interactor / p29


Mass: 28780.518 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O95926
#16: Protein Pre-mRNA-splicing factor RBM22 / RNA-binding motif protein 22 / Zinc finger CCCH domain-containing protein 16


Mass: 46959.555 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9NW64
#23: Protein Pre-mRNA-splicing factor CWC22 homolog / Nucampholin homolog / fSAPb


Mass: 105646.578 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9HCG8
#40: Protein Pre-mRNA-splicing factor SLU7 / hSlu7


Mass: 68510.844 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O95391

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Peptidyl-prolyl cis-trans ... , 2 types, 2 molecules Sy

#20: Protein Peptidyl-prolyl cis-trans isomerase-like 1 / PPIase / Rotamase PPIL1


Mass: 18257.805 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9Y3C6, peptidylprolyl isomerase
#30: Protein Peptidyl-prolyl cis-trans isomerase E / PPIase E / Cyclophilin E / Cyclophilin-33 / Rotamase E


Mass: 33475.773 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9UNP9, peptidylprolyl isomerase

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Pre-mRNA-processing factor ... , 2 types, 5 molecules Wqrst

#24: Protein Pre-mRNA-processing factor 17 / Cell division cycle 40 homolog / EH-binding protein 3 / Ehb3 / PRP17 homolog / hPRP17


Mass: 65612.180 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O60508
#37: Protein
Pre-mRNA-processing factor 19 / Nuclear matrix protein 200 / PRP19/PSO4 homolog / hPso4 / RING-type E3 ubiquitin transferase PRP19 ...Nuclear matrix protein 200 / PRP19/PSO4 homolog / hPso4 / RING-type E3 ubiquitin transferase PRP19 / Senescence evasion factor


Mass: 55245.547 Da / Num. of mol.: 4 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human)
References: UniProt: Q9UMS4, RING-type E3 ubiquitin transferase

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Small nuclear ribonucleoprotein ... , 6 types, 12 molecules ahcjdkfmelgn

#31: Protein Small nuclear ribonucleoprotein Sm D3 / Sm-D3 / snRNP core protein D3


Mass: 13940.308 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62318
#32: Protein Small nuclear ribonucleoprotein Sm D1 / Sm-D1 / Sm-D autoantigen / snRNP core protein D1


Mass: 13310.653 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62314
#33: Protein Small nuclear ribonucleoprotein Sm D2 / Sm-D2 / snRNP core protein D2


Mass: 13551.928 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62316
#34: Protein Small nuclear ribonucleoprotein F / snRNP-F / Sm protein F / SmF


Mass: 9734.171 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62306
#35: Protein Small nuclear ribonucleoprotein E / snRNP-E / Sm protein E / SmE


Mass: 10817.601 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62304
#36: Protein Small nuclear ribonucleoprotein G / snRNP-G / Sm protein G / SmG


Mass: 8508.084 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62308

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U2 small nuclear ribonucleoprotein ... , 2 types, 2 molecules op

#38: Protein U2 small nuclear ribonucleoprotein A' / U2 snRNP A'


Mass: 28456.584 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P09661
#39: Protein U2 small nuclear ribonucleoprotein B'' / U2 snRNP B''


Mass: 25524.367 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P08579

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Non-polymers , 5 types, 19 molecules

#46: Chemical ChemComp-IHP / INOSITOL HEXAKISPHOSPHATE / MYO-INOSITOL HEXAKISPHOSPHATE / INOSITOL 1,2,3,4,5,6-HEXAKISPHOSPHATE / Phytic acid


Mass: 660.035 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C6H18O24P6 / Feature type: SUBJECT OF INVESTIGATION
#47: Chemical ChemComp-GTP / GUANOSINE-5'-TRIPHOSPHATE / Guanosine triphosphate


Mass: 523.180 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C10H16N5O14P3 / Feature type: SUBJECT OF INVESTIGATION / Comment: GTP, energy-carrying molecule*YM
#48: Chemical
ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 9 / Source method: obtained synthetically / Formula: Mg / Feature type: SUBJECT OF INVESTIGATION
#49: Chemical
ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 7 / Source method: obtained synthetically / Formula: Zn / Feature type: SUBJECT OF INVESTIGATION
#50: Chemical ChemComp-ATP / ADENOSINE-5'-TRIPHOSPHATE / Adenosine triphosphate


Mass: 507.181 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C10H16N5O13P3 / Feature type: SUBJECT OF INVESTIGATION / Comment: ATP, energy-carrying molecule*YM

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Details

Has ligand of interestY

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: Human pre-C*-I complex / Type: COMPLEX / Entity ID: #1-#6, #9-#45 / Source: MULTIPLE SOURCES
Source (natural)Organism: Homo sapiens (human)
Buffer solutionpH: 7.9
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELDBright-field microscopy / Nominal defocus max: 2500 nm / Nominal defocus min: 1200 nm
Image recordingElectron dose: 50 e/Å2 / Detector mode: SUPER-RESOLUTION / Film or detector model: GATAN K2 SUMMIT (4k x 4k)

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Processing

SoftwareName: PHENIX / Version: 1.13_2998: / Classification: refinement
CTF correctionType: NONE
3D reconstructionResolution: 4.3 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 58374 / Symmetry type: POINT

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