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- PDB-6id1: Cryo-EM structure of a human intron lariat spliceosome after Prp4... -

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Basic information

Entry
Database: PDB / ID: 6id1
TitleCryo-EM structure of a human intron lariat spliceosome after Prp43 loaded (ILS2 complex) at 2.9 angstrom resolution
Components
  • (Peptidyl-prolyl cis-trans ...) x 2
  • (Pre-mRNA-processing factor ...) x 2
  • (Pre-mRNA-splicing factor ...) x 5
  • (Small nuclear ribonucleoprotein ...) x 6
  • (U2 small nuclear ribonucleoprotein ...) x 2
  • 116 kDa U5 small nuclear ribonucleoprotein component
  • CWF19-like protein 2
  • Cell division cycle 5-like protein
  • Crooked neck-like protein 1
  • Pleiotropic regulator 1
  • Pre-mRNA-processing-splicing factor 8
  • Protein BUD31 homolog
  • RNA helicase aquarius
  • SNW domain-containing protein 1
  • Small nuclear ribonucleoprotein-associated protein
  • Spliceosome-associated protein CWC15 homolog
  • U2snRNA
  • U5 small nuclear ribonucleoprotein 40 kDa protein
  • U5snRNA
  • U6snRNA
  • pre-mRNA
KeywordsSPLICING / Human Intron Lariat Spliceosome
Function / homology
Function and homology information


regulation of retinoic acid receptor signaling pathway / post-mRNA release spliceosomal complex / U2 snRNP binding / U7 snRNA binding / histone pre-mRNA DCP binding / U7 snRNP / 3'-5' RNA helicase activity / generation of catalytic spliceosome for first transesterification step / histone pre-mRNA 3'end processing complex / alternative mRNA splicing, via spliceosome ...regulation of retinoic acid receptor signaling pathway / post-mRNA release spliceosomal complex / U2 snRNP binding / U7 snRNA binding / histone pre-mRNA DCP binding / U7 snRNP / 3'-5' RNA helicase activity / generation of catalytic spliceosome for first transesterification step / histone pre-mRNA 3'end processing complex / alternative mRNA splicing, via spliceosome / regulation of vitamin D receptor signaling pathway / SLBP independent Processing of Histone Pre-mRNAs / SLBP Dependent Processing of Replication-Dependent Histone Pre-mRNAs / nuclear retinoic acid receptor binding / embryonic brain development / protein methylation / U12-type spliceosomal complex / poly(A) binding / 7-methylguanosine cap hypermethylation / U1 snRNP binding / RNA splicing, via transesterification reactions / mRNA 3'-end processing / sno(s)RNA-containing ribonucleoprotein complex / methylosome / ATP-dependent activity, acting on RNA / pICln-Sm protein complex / oocyte development / U2-type catalytic step 1 spliceosome / positive regulation of mRNA splicing, via spliceosome / pre-mRNA binding / snRNP binding / small nuclear ribonucleoprotein complex / response to alkaloid / 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 / U1 snRNP / NOTCH3 Intracellular Domain Regulates Transcription / U2-type prespliceosome / WD40-repeat domain binding / protein peptidyl-prolyl isomerization / inner cell mass cell proliferation / 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 / 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 / mRNA Splicing - Minor Pathway / spliceosomal tri-snRNP complex assembly / blastocyst development / Prp19 complex / protein K63-linked ubiquitination / U5 snRNA binding / intrinsic apoptotic signaling pathway in response to DNA damage by p53 class mediator / protein localization to nucleus / U5 snRNP / positive regulation of G1/S transition of mitotic cell cycle / embryonic organ development / U2 snRNA binding / U6 snRNA binding / pre-mRNA intronic binding / positive regulation of viral genome replication / spliceosomal snRNP assembly / RNA processing / Cajal body / proteasomal protein catabolic process / transcription-coupled nucleotide-excision repair / retinoic acid receptor signaling pathway / U1 snRNA binding / spindle assembly / ovarian follicle development / U4/U6 x U5 tri-snRNP complex / cellular response to retinoic acid
Similarity search - Function
Pre-mRNA-processing-splicing factor 8 (Prp8), endonuclease domain / tt1808, chain A / Cwf19-like protein, C-terminal domain-2 / Cwf19-like, C-terminal domain-1 / Cwf19-like protein / Protein similar to CwfJ C-terminus 2 / Protein similar to CwfJ C-terminus 1 / DHX15, DEXH-box helicase domain / HAT (Half-A-TPR) repeat / Prp19 WD40 domain ...Pre-mRNA-processing-splicing factor 8 (Prp8), endonuclease domain / tt1808, chain A / Cwf19-like protein, C-terminal domain-2 / Cwf19-like, C-terminal domain-1 / Cwf19-like protein / Protein similar to CwfJ C-terminus 2 / Protein similar to CwfJ C-terminus 1 / DHX15, DEXH-box helicase domain / HAT (Half-A-TPR) repeat / 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 / U2 small nuclear ribonucleoprotein B'', RNA recognition motif 2 / U2 small nuclear ribonucleoprotein B'', RNA recognition motif 1 / 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 / : / Small ribonucleoprotein associated, SmB/SmN / Myb-like DNA-binding domain / U2 small nuclear ribonucleoprotein A' / Small nuclear ribonucleoprotein D1 / U-box domain profile. / U2A'/phosphoprotein 32 family A, C-terminal / occurring C-terminal to leucine-rich repeats / HIT-like superfamily / Modified RING finger domain / U-box domain / Zinc finger, CCCH-type superfamily / zinc finger / Leucine-rich repeat / 116kDa U5 small nuclear ribonucleoprotein component, N-terminal / 116kDa U5 small nuclear ribonucleoprotein component, C-terminal / Snu114, GTP-binding domain / 116 kDa U5 small nuclear ribonucleoprotein component N-terminus / Pre-mRNA-splicing factor Syf1-like / SH3 type barrels. - #100 / : / Helicase associated domain (HA2), ratchet-like / DEAD-box helicase, OB fold / Oligonucleotide/oligosaccharide-binding (OB)-fold / Helicase associated domain (HA2), winged-helix / Helicase-associated domain / Helicase associated domain (HA2) Add an annotation / Small nuclear ribonucleoprotein Sm D3 / Small nuclear ribonucleoprotein Sm D2 / Small nuclear ribonucleoprotein E / Small nuclear ribonucleoprotein G / Small nuclear ribonucleoprotein F / Sm-like protein Lsm7/SmG / Like-Sm (LSM) domain containing protein, LSm4/SmD1/SmD3 / Sm-like protein Lsm6/SmF / Myb-type HTH DNA-binding domain profile. / Zinc finger, CCCH-type / Zinc finger C3H1-type profile. / Cyclophilin-like / Cyclophilin
Similarity search - Domain/homology
GUANOSINE-5'-TRIPHOSPHATE / INOSITOL HEXAKISPHOSPHATE / : / : / RNA / RNA (> 10) / RNA (> 100) / ATP-dependent RNA helicase DHX15 / Pleiotropic regulator 1 / RNA helicase aquarius ...GUANOSINE-5'-TRIPHOSPHATE / INOSITOL HEXAKISPHOSPHATE / : / : / RNA / RNA (> 10) / RNA (> 100) / ATP-dependent RNA helicase DHX15 / Pleiotropic regulator 1 / RNA helicase aquarius / Pre-mRNA-processing factor 17 / 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 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 / SNW domain-containing protein 1 / 116 kDa U5 small nuclear ribonucleoprotein component / CWF19-like protein 2 / Small nuclear ribonucleoprotein-associated protein / Pre-mRNA-processing-splicing factor 8 / U5 small nuclear ribonucleoprotein 40 kDa protein / Cell division cycle 5-like protein / Crooked neck-like protein 1 / 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 / Peptidyl-prolyl cis-trans isomerase-like 1
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.86 Å
AuthorsZhang, X. / Zhan, X. / Yan, C. / Shi, Y.
Funding support China, 2items
OrganizationGrant numberCountry
National Natural Science Foundation of China31621092 China
National Natural Science Foundation of China31430020 China
CitationJournal: Cell Res / Year: 2019
Title: Structures of the human spliceosomes before and after release of the ligated exon.
Authors: Xiaofeng Zhang / Xiechao Zhan / Chuangye Yan / Wenyu Zhang / Dongliang Liu / Jianlin Lei / Yigong Shi /
Abstract: Pre-mRNA splicing is executed by the spliceosome, which has eight major functional states each with distinct composition. Five of these eight human spliceosomal complexes, all preceding exon ...Pre-mRNA splicing is executed by the spliceosome, which has eight major functional states each with distinct composition. Five of these eight human spliceosomal complexes, all preceding exon ligation, have been structurally characterized. In this study, we report the cryo-electron microscopy structures of the human post-catalytic spliceosome (P complex) and intron lariat spliceosome (ILS) at average resolutions of 3.0 and 2.9 Å, respectively. In the P complex, the ligated exon remains anchored to loop I of U5 small nuclear RNA, and the 3'-splice site is recognized by the junction between the 5'-splice site and the branch point sequence. The ATPase/helicase Prp22, along with the ligated exon and eight other proteins, are dissociated in the P-to-ILS transition. Intriguingly, the ILS complex exists in two distinct conformations, one with the ATPase/helicase Prp43 and one without. Comparison of these three late-stage human spliceosomes reveals mechanistic insights into exon release and spliceosome disassembly.
History
DepositionSep 7, 2018Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Mar 13, 2019Provider: repository / Type: Initial release
Revision 1.1Apr 17, 2019Group: Data collection / Database references / Category: citation / citation_author
Item: _citation.journal_volume / _citation.page_first ..._citation.journal_volume / _citation.page_first / _citation.page_last / _citation_author.identifier_ORCID
Revision 2.0Oct 14, 2020Group: Atomic model / Data collection ...Atomic model / Data collection / Derived calculations / Non-polymer description / Structure summary
Category: atom_site / chem_comp ...atom_site / chem_comp / entity / pdbx_entity_nonpoly / pdbx_nonpoly_scheme / pdbx_struct_conn_angle / struct_conn / struct_conn_type / struct_site
Item: _atom_site.Cartn_x / _atom_site.Cartn_y ..._atom_site.Cartn_x / _atom_site.Cartn_y / _atom_site.Cartn_z / _atom_site.auth_atom_id / _atom_site.auth_comp_id / _atom_site.label_atom_id / _atom_site.label_comp_id / _atom_site.type_symbol / _chem_comp.id / _chem_comp.name / _chem_comp.pdbx_synonyms / _entity.pdbx_description / _pdbx_entity_nonpoly.comp_id / _pdbx_entity_nonpoly.name / _pdbx_nonpoly_scheme.mon_id / _pdbx_nonpoly_scheme.pdb_mon_id / _pdbx_struct_conn_angle.ptnr1_auth_asym_id / _pdbx_struct_conn_angle.ptnr1_auth_comp_id / _pdbx_struct_conn_angle.ptnr1_auth_seq_id / _pdbx_struct_conn_angle.ptnr1_label_asym_id / _pdbx_struct_conn_angle.ptnr1_label_atom_id / _pdbx_struct_conn_angle.ptnr1_label_comp_id / _pdbx_struct_conn_angle.ptnr1_label_seq_id / _pdbx_struct_conn_angle.ptnr2_auth_asym_id / _pdbx_struct_conn_angle.ptnr2_auth_comp_id / _pdbx_struct_conn_angle.ptnr2_auth_seq_id / _pdbx_struct_conn_angle.ptnr2_label_asym_id / _pdbx_struct_conn_angle.ptnr2_label_atom_id / _pdbx_struct_conn_angle.ptnr2_label_comp_id / _pdbx_struct_conn_angle.ptnr3_auth_asym_id / _pdbx_struct_conn_angle.ptnr3_auth_comp_id / _pdbx_struct_conn_angle.ptnr3_auth_seq_id / _pdbx_struct_conn_angle.ptnr3_label_asym_id / _pdbx_struct_conn_angle.ptnr3_label_atom_id / _pdbx_struct_conn_angle.ptnr3_label_comp_id / _pdbx_struct_conn_angle.ptnr3_label_seq_id / _pdbx_struct_conn_angle.value / _struct_conn.conn_type_id / _struct_conn.id / _struct_conn.pdbx_dist_value / _struct_conn.pdbx_leaving_atom_flag / _struct_conn.ptnr1_auth_asym_id / _struct_conn.ptnr1_auth_comp_id / _struct_conn.ptnr1_auth_seq_id / _struct_conn.ptnr1_label_asym_id / _struct_conn.ptnr1_label_atom_id / _struct_conn.ptnr1_label_comp_id / _struct_conn.ptnr1_label_seq_id / _struct_conn.ptnr2_auth_asym_id / _struct_conn.ptnr2_auth_comp_id / _struct_conn.ptnr2_auth_seq_id / _struct_conn.ptnr2_label_asym_id / _struct_conn.ptnr2_label_atom_id / _struct_conn.ptnr2_label_comp_id / _struct_conn.ptnr2_label_seq_id / _struct_conn_type.id / _struct_site.details / _struct_site.pdbx_auth_comp_id
Revision 2.1Oct 9, 2024Group: Data collection / Database references / Structure summary
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / em_admin / pdbx_entry_details / pdbx_modification_feature
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession / _em_admin.last_update

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Assembly

Deposited unit
A: Pre-mRNA-processing-splicing factor 8
B: U5snRNA
C: 116 kDa U5 small nuclear ribonucleoprotein component
E: U5 small nuclear ribonucleoprotein 40 kDa protein
F: U6snRNA
J: Crooked neck-like protein 1
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
R: SNW domain-containing protein 1
S: Peptidyl-prolyl cis-trans isomerase-like 1
T: Pleiotropic regulator 1
W: Pre-mRNA-processing factor 17
G: pre-mRNA
H: U2snRNA
U: CWF19-like protein 2
a: Small nuclear ribonucleoprotein Sm D3
b: Small nuclear ribonucleoprotein-associated protein
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
K: Pre-mRNA-splicing factor SPF27
I: Pre-mRNA-splicing factor SYF1
Q: RNA helicase aquarius
y: Peptidyl-prolyl cis-trans isomerase E
h: Small nuclear ribonucleoprotein Sm D3
i: Small nuclear ribonucleoprotein-associated protein
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''
V: Pre-mRNA-splicing factor ATP-dependent RNA helicase DHX15
hetero molecules


Theoretical massNumber of molelcules
Total (without water)2,147,51759
Polymers2,145,70543
Non-polymers1,81116
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: assay for oligomerization
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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Protein , 12 types, 13 molecules ACEJLNPRTUbiQ

#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
#4: 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
#6: 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
#7: 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
#9: 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
#11: 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
#12: 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
#14: 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
#18: Protein CWF19-like protein 2


Mass: 103976.492 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q2TBE0
#20: Protein Small nuclear ribonucleoprotein-associated protein


Mass: 23686.004 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q66K91, UniProt: P14678*PLUS
#29: 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

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RNA chain , 4 types, 4 molecules BFGH

#2: RNA chain U5snRNA


Mass: 37254.855 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: GenBank: 20330981
#5: RNA chain U6snRNA


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


Mass: 87186.328 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human)
#17: RNA chain U2snRNA


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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Pre-mRNA-splicing factor ... , 5 types, 5 molecules MOKIV

#8: 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
#10: 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
#27: 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
#28: 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
#33: Protein Pre-mRNA-splicing factor ATP-dependent RNA helicase DHX15 / ATP-dependent RNA helicase #46 / DEAH box protein 15


Mass: 91065.805 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O43143, RNA helicase

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

#13: 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

#15: 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
#26: 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

#19: 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
#21: 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
#22: 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
#23: 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
#24: 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
#25: 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

#31: 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
#32: 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 , 4 types, 16 molecules

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


Mass: 660.035 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C6H18O24P6
#35: Chemical ChemComp-GTP / GUANOSINE-5'-TRIPHOSPHATE


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


Mass: 24.305 Da / Num. of mol.: 7 / Source method: obtained synthetically / Formula: Mg
#37: Chemical
ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 7 / Source method: obtained synthetically / Formula: Zn

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Details

Has protein modificationY

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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 Intron Lariat Spliceosome / Type: COMPLEX / Entity ID: #1-#33 / Source: NATURAL
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 FIELD
Image recordingElectron dose: 45 e/Å2 / 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: 2.86 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 499840 / Symmetry type: POINT
RefinementHighest resolution: 2.86 Å

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