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- PDB-5ylz: Cryo-EM Structure of the Post-catalytic Spliceosome from Saccharo... -

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Basic information

Entry
Database: PDB / ID: 5ylz
TitleCryo-EM Structure of the Post-catalytic Spliceosome from Saccharomyces cerevisiae at 3.6 angstrom
Components
  • (Pre-mRNA-processing factor ...) x 2
  • (Pre-mRNA-splicing factor ...) x 17
  • (Small nuclear ribonucleoprotein ...SnRNP) x 6
  • (U2 small nuclear ribonucleoprotein ...) x 2
  • Pre-mRNA-processing protein 45
  • Small nuclear ribonucleoprotein-associated protein B
  • U2 snRNAU2 spliceosomal RNA
  • U5 snRNAU5 spliceosomal RNA
  • U6 snRNAU6 spliceosomal RNA
  • mRNA/intron lariat
KeywordsSPLICING / Post-catalytic Spliceosome (P complex) / RNA splicing / exon ligation / spliceosome
Function / homology
Function and homology information


U2-type post-spliceosomal complex / U2-type post-mRNA release spliceosomal complex / spliceosomal complex disassembly / mRNA branch site recognition / cellular bud site selection / pre-mRNA 3'-splice site binding / post-mRNA release spliceosomal complex / cis assembly of pre-catalytic spliceosome / generation of catalytic spliceosome for first transesterification step / nuclear mRNA surveillance ...U2-type post-spliceosomal complex / U2-type post-mRNA release spliceosomal complex / spliceosomal complex disassembly / mRNA branch site recognition / cellular bud site selection / pre-mRNA 3'-splice site binding / post-mRNA release spliceosomal complex / cis assembly of pre-catalytic spliceosome / generation of catalytic spliceosome for first transesterification step / nuclear mRNA surveillance / spliceosome conformational change to release U4 (or U4atac) and U1 (or U11) / splicing factor binding / U4/U6 snRNP / 7-methylguanosine cap hypermethylation / pre-mRNA binding / U2-type catalytic step 1 spliceosome / pICln-Sm protein complex / Prp19 complex / spliceosomal tri-snRNP complex / small nuclear ribonucleoprotein complex / SMN-Sm protein complex / mRNA cis splicing, via spliceosome / U2-type spliceosomal complex / U2-type prespliceosome assembly / commitment complex / U2-type catalytic step 2 spliceosome / U4 snRNP / U2 snRNP / poly(U) RNA binding / U1 snRNP / U2-type prespliceosome / precatalytic spliceosome / spliceosomal complex assembly / Dual incision in TC-NER / DNA replication origin binding / generation of catalytic spliceosome for second transesterification step / protein K63-linked ubiquitination / Gap-filling DNA repair synthesis and ligation in TC-NER / mRNA 3'-splice site recognition / mRNA 5'-splice site recognition / DNA replication initiation / spliceosomal tri-snRNP complex assembly / U5 snRNA binding / U5 snRNP / U2 snRNA binding / spliceosomal snRNP assembly / U6 snRNA binding / pre-mRNA intronic binding / positive regulation of cell cycle / U1 snRNA binding / U4/U6 x U5 tri-snRNP complex / catalytic step 2 spliceosome / nuclear periphery / positive regulation of RNA splicing / spliceosomal complex / RING-type E3 ubiquitin transferase / mRNA splicing, via spliceosome / ubiquitin-protein transferase activity / metallopeptidase activity / ubiquitin protein ligase activity / RNA helicase activity / RNA helicase / cell cycle / DNA repair / mRNA binding / GTPase activity / chromatin binding / chromatin / GTP binding / ATP hydrolysis activity / mitochondrion / DNA binding / RNA binding / zinc ion binding / ATP binding / identical protein binding / metal ion binding / nucleus / cytosol / cytoplasm
Similarity search - Function
RNA Binding Protein, Prp18; Chain A / Functional domain of the splicing factor Prp18 / Prp18 / Pre-mRNA-splicing factor 18 / Prp18 domain / Pre-mRNA-splicing factor SLU7 domain / Pre-mRNA-splicing factor SLU7 / Pre-mRNA splicing Prp18-interacting factor / DHX8/ Prp22, DEXH-box helicase domain / : ...RNA Binding Protein, Prp18; Chain A / Functional domain of the splicing factor Prp18 / Prp18 / Pre-mRNA-splicing factor 18 / Prp18 domain / Pre-mRNA-splicing factor SLU7 domain / Pre-mRNA-splicing factor SLU7 / Pre-mRNA splicing Prp18-interacting factor / DHX8/ Prp22, DEXH-box helicase domain / : / : / Slt11, RNA recognition motif / cwf21 / Torus domain / Pre-mRNA-splicing factor Cwc2, RNA recognition motif / Torus domain / mRNA splicing factor SYF2 / SYF2 splicing factor / mRNA splicing factor Cwf21 domain / cwf21 domain / Pre-mRNA-processing factor 17 / : / RNA recognition motif. (a.k.a. RRM, RBD, or RNP domain) / STL11, N-terminal / Pre-mRNA-splicing factor 19 / Pre-mRNA-processing factor 19 / Prp19/Pso4-like / WD repeat Prp46/PLRG1-like / 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 / 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. / U2A'/phosphoprotein 32 family A, C-terminal / occurring C-terminal to leucine-rich repeats / U-box domain profile. / Leucine-rich repeat / Modified RING finger domain / Pre-mRNA-splicing factor Syf1-like / Middle domain of eukaryotic initiation factor 4G (eIF4G) / MIF4G-like, type 3 / U-box domain / Snu114, GTP-binding domain / 116kDa U5 small nuclear ribonucleoprotein component, N-terminal / 116kDa U5 small nuclear ribonucleoprotein component, C-terminal / 116 kDa U5 small nuclear ribonucleoprotein component N-terminus / : / Helicase associated domain (HA2), ratchet-like / DEAD-box helicase, OB fold / Oligonucleotide/oligosaccharide-binding (OB)-fold / Helicase-associated domain / Helicase associated domain (HA2), winged-helix / 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 / SH3 type barrels. - #100 / Sm-like protein Lsm6/SmF / Myb-type HTH DNA-binding domain profile. / Zinc finger, CCCH-type / Zinc finger C3H1-type profile. / LSM domain / LSM domain, eukaryotic/archaea-type / snRNP Sm proteins / HAT (Half-A-TPR) repeat / HAT (Half-A-TPR) repeats / Myb domain / : / Sm domain profile. / Myb-like DNA-binding domain / DNA/RNA helicase, ATP-dependent, DEAH-box type, conserved site / DEAH-box subfamily ATP-dependent helicases signature. / Translation elongation factor EFG/EF2, domain IV / Elongation factor G, domain IV / Elongation factor G, domain IV / LSM domain superfamily / Elongation factor G C-terminus / Elongation factor EFG, domain V-like / Elongation factor G C-terminus / Quinoprotein alcohol dehydrogenase-like superfamily / EF-G domain III/V-like
Similarity search - Domain/homology
GUANOSINE-5'-TRIPHOSPHATE / INOSITOL HEXAKISPHOSPHATE / RNA / RNA (> 10) / RNA (> 100) / RNA (> 1000) / Pre-mRNA-splicing factor ATP-dependent RNA helicase PRP22 / Pre-mRNA-splicing factor BUD31 / Pre-mRNA-processing protein 45 / Pre-mRNA-processing factor 19 ...GUANOSINE-5'-TRIPHOSPHATE / INOSITOL HEXAKISPHOSPHATE / RNA / RNA (> 10) / RNA (> 100) / RNA (> 1000) / Pre-mRNA-splicing factor ATP-dependent RNA helicase PRP22 / Pre-mRNA-splicing factor BUD31 / Pre-mRNA-processing protein 45 / Pre-mRNA-processing factor 19 / Pre-mRNA-splicing factor 8 / Pre-mRNA-splicing factor 18 / Pre-mRNA-splicing factor SNU114 / Pre-mRNA-splicing factor SLT11 / Small nuclear ribonucleoprotein-associated protein B / Small nuclear ribonucleoprotein G / U2 small nuclear ribonucleoprotein B'' / Pre-mRNA-processing factor 17 / Small nuclear ribonucleoprotein Sm D3 / Pre-mRNA-splicing factor SYF2 / Pre-mRNA-splicing factor CWC22 / Small nuclear ribonucleoprotein F / Small nuclear ribonucleoprotein Sm D1 / Pre-mRNA-splicing factor SLU7 / Pre-mRNA-splicing factor CWC21 / Pre-mRNA-splicing factor CEF1 / Pre-mRNA-splicing factor CWC15 / Pre-mRNA-splicing factor SYF1 / Pre-mRNA-splicing factor SNT309 / Small nuclear ribonucleoprotein Sm D2 / U2 small nuclear ribonucleoprotein A' / Pre-mRNA-splicing factor CWC2 / Pre-mRNA-splicing factor CLF1 / Small nuclear ribonucleoprotein E / Pre-mRNA-splicing factor PRP46
Similarity search - Component
Biological speciesSaccharomyces cerevisiae S288c (yeast)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.6 Å
AuthorsWan, R. / Yan, C. / Bai, R. / Lei, J. / Shi, Y.
Funding support China, 3items
OrganizationGrant numberCountry
National Natural Science Foundation of China31621092 China
National Natural Science Foundation of China31430020 China
Ministry of Science and Technology (China)2016YFA0501100 China
CitationJournal: Cell / Year: 2017
Title: Structure of the Post-catalytic Spliceosome from Saccharomyces cerevisiae.
Authors: Rui Bai / Chuangye Yan / Ruixue Wan / Jianlin Lei / Yigong Shi /
Abstract: Removal of an intron from a pre-mRNA by the spliceosome results in the ligation of two exons in the post-catalytic spliceosome (known as the P complex). Here, we present a cryo-EM structure of the ...Removal of an intron from a pre-mRNA by the spliceosome results in the ligation of two exons in the post-catalytic spliceosome (known as the P complex). Here, we present a cryo-EM structure of the P complex from Saccharomyces cerevisiae at an average resolution of 3.6 Å. The ligated exon is held in the active site through RNA-RNA contacts. Three bases at the 3' end of the 5' exon remain anchored to loop I of U5 small nuclear RNA, and the conserved AG nucleotides of the 3'-splice site (3'SS) are specifically recognized by the invariant adenine of the branch point sequence, the guanine base at the 5' end of the 5'SS, and an adenine base of U6 snRNA. The 3'SS is stabilized through an interaction with the 1585-loop of Prp8. The P complex structure provides a view on splice junction formation critical for understanding the complete splicing cycle.
History
DepositionOct 20, 2017Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Jul 18, 2018Provider: repository / Type: Initial release
Revision 1.1Nov 6, 2019Group: Data collection / Derived calculations / Other / Category: atom_sites / cell / struct_conn
Item: _atom_sites.fract_transf_matrix[1][1] / _atom_sites.fract_transf_matrix[2][1] ..._atom_sites.fract_transf_matrix[1][1] / _atom_sites.fract_transf_matrix[2][1] / _atom_sites.fract_transf_matrix[2][2] / _atom_sites.fract_transf_matrix[3][2] / _atom_sites.fract_transf_matrix[3][3] / _cell.Z_PDB / _struct_conn.pdbx_leaving_atom_flag
Revision 2.0Oct 14, 2020Group: Advisory / Atomic model ...Advisory / Atomic model / Data collection / Derived calculations / Non-polymer description / Polymer sequence / Structure summary
Category: atom_site / chem_comp ...atom_site / chem_comp / entity / entity_poly / pdbx_entity_nonpoly / pdbx_nonpoly_scheme / pdbx_struct_conn_angle / pdbx_validate_close_contact / 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 / _entity_poly.pdbx_seq_one_letter_code / _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_seq_id / _pdbx_struct_conn_angle.ptnr1_label_seq_id / _pdbx_struct_conn_angle.ptnr2_auth_seq_id / _pdbx_struct_conn_angle.ptnr2_label_asym_id / _pdbx_struct_conn_angle.ptnr3_auth_seq_id / _pdbx_struct_conn_angle.ptnr3_label_seq_id / _pdbx_struct_conn_angle.value / _pdbx_validate_close_contact.auth_atom_id_2 / _pdbx_validate_close_contact.auth_comp_id_2 / _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 2.1Mar 27, 2024Group: Data collection / Database references / Category: chem_comp_atom / chem_comp_bond / database_2
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession

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Assembly

Deposited unit
A: Pre-mRNA-splicing factor 8
B: U5 snRNA
C: Pre-mRNA-splicing factor SNU114
D: U6 snRNA
E: mRNA/intron lariat
F: U2 snRNA
G: Pre-mRNA-splicing factor SNT309
H: Pre-mRNA-splicing factor SYF1
I: Pre-mRNA-splicing factor CLF1
J: Pre-mRNA-splicing factor CEF1
K: Pre-mRNA-splicing factor SYF2
L: Pre-mRNA-splicing factor BUD31
T: Pre-mRNA-processing factor 17
M: Pre-mRNA-splicing factor SLT11
N: Pre-mRNA-splicing factor CWC2
O: Pre-mRNA-splicing factor PRP46
P: Pre-mRNA-splicing factor CWC15
Q: Pre-mRNA-processing protein 45
R: Pre-mRNA-splicing factor CWC21
S: Pre-mRNA-splicing factor CWC22
U: Pre-mRNA-splicing factor 18
V: Pre-mRNA-splicing factor SLU7
W: Pre-mRNA-splicing factor ATP-dependent RNA helicase PRP22
a: Small nuclear ribonucleoprotein-associated protein B
b: Small nuclear ribonucleoprotein E
c: Small nuclear ribonucleoprotein F
d: Small nuclear ribonucleoprotein G
e: Small nuclear ribonucleoprotein Sm D3
f: Small nuclear ribonucleoprotein Sm D1
g: Small nuclear ribonucleoprotein Sm D2
h: Small nuclear ribonucleoprotein-associated protein B
i: Small nuclear ribonucleoprotein E
j: Small nuclear ribonucleoprotein F
k: Small nuclear ribonucleoprotein G
l: Small nuclear ribonucleoprotein Sm D3
m: Small nuclear ribonucleoprotein Sm D1
n: Small nuclear ribonucleoprotein Sm D2
o: U2 small nuclear ribonucleoprotein A'
p: U2 small nuclear ribonucleoprotein B''
q: Pre-mRNA-processing factor 19
r: Pre-mRNA-processing factor 19
s: Pre-mRNA-processing factor 19
t: Pre-mRNA-processing factor 19
hetero molecules


Theoretical massNumber of molelcules
Total (without water)2,285,79857
Polymers2,284,07643
Non-polymers1,72114
Water0
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: microscopy
TypeNameSymmetry operationNumber
identity operation1_5551
Buried area174520 Å2
ΔGint-1176 kcal/mol
Surface area475520 Å2

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Components

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Pre-mRNA-splicing factor ... , 17 types, 17 molecules ACGHIJKLMNOPRSUVW

#1: Protein Pre-mRNA-splicing factor 8


Mass: 279867.469 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288c (yeast) / Strain: ATCC 204508 / S288c / References: UniProt: P33334
#3: Protein Pre-mRNA-splicing factor SNU114 / 114 kDa U5 small nuclear ribonucleoprotein component / Growth inhibitory protein 10


Mass: 114174.008 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288c (yeast) / Strain: ATCC 204508 / S288c / References: UniProt: P36048
#7: Protein Pre-mRNA-splicing factor SNT309 / PRP19-associated complex protein 25 / Synergistic to PRP19 mutation protein 309


Mass: 20741.455 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288c (yeast) / Strain: ATCC 204508 / S288c / References: UniProt: Q06091
#8: Protein Pre-mRNA-splicing factor SYF1 / PRP19-associated complex protein 90 / Synthetic lethal with CDC40 protein 1


Mass: 100344.016 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288c (yeast) / Strain: ATCC 204508 / S288c / References: UniProt: Q04048
#9: Protein Pre-mRNA-splicing factor CLF1 / Crooked neck-like factor 1 / PRP19-associated complex protein 77 / Synthetic lethal with CDC40 protein 3


Mass: 82555.859 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288c (yeast) / Strain: ATCC 204508 / S288c / References: UniProt: Q12309
#10: Protein Pre-mRNA-splicing factor CEF1 / PRP nineteen-associated complex protein 85 / PRP19-associated complex protein 85


Mass: 67837.773 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288c (yeast) / Strain: ATCC 204508 / S288c / References: UniProt: Q03654
#11: Protein Pre-mRNA-splicing factor SYF2 / PRP19 complex protein 31 / Synthetic lethal with CDC40 protein 2


Mass: 24850.719 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288c (yeast) / Strain: ATCC 204508 / S288c / References: UniProt: P53277
#12: Protein Pre-mRNA-splicing factor BUD31 / Bud site selection protein 31 / Complexed with CEF1 protein 14


Mass: 18484.502 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288c (yeast) / Strain: ATCC 204508 / S288c / References: UniProt: P25337
#14: Protein Pre-mRNA-splicing factor SLT11 / Extracellular mutant protein 2 / Synthetic lethality with U2 protein 11


Mass: 40988.590 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288c (yeast) / Strain: ATCC 204508 / S288c / References: UniProt: P38241
#15: Protein Pre-mRNA-splicing factor CWC2 / Complexed with CEF1 protein 2 / PRP19-associated complex protein 40 / Synthetic lethal with CLF1 protein 3


Mass: 38486.562 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288c (yeast) / Strain: ATCC 204508 / S288c / References: UniProt: Q12046
#16: Protein Pre-mRNA-splicing factor PRP46 / Complexed with CEF1 protein 1 / PRP nineteen-associated complex protein 50 / PRP19-associated ...Complexed with CEF1 protein 1 / PRP nineteen-associated complex protein 50 / PRP19-associated complex protein 50 / Pre-mRNA-processing protein 46


Mass: 50771.289 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288c (yeast) / Strain: ATCC 204508 / S288c / References: UniProt: Q12417
#17: Protein Pre-mRNA-splicing factor CWC15 / Complexed with CEF1 protein 15


Mass: 19975.195 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288c (yeast) / Strain: ATCC 204508 / S288c / References: UniProt: Q03772
#19: Protein Pre-mRNA-splicing factor CWC21 / Complexed with CEF1 protein 21


Mass: 15793.596 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288c (yeast) / Strain: ATCC 204508 / S288c / References: UniProt: Q03375
#20: Protein Pre-mRNA-splicing factor CWC22 / Complexed with CEF1 protein 22


Mass: 67386.062 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288c (yeast) / Strain: ATCC 204508 / S288c / References: UniProt: P53333
#21: Protein Pre-mRNA-splicing factor 18


Mass: 28414.391 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288c (yeast) / Strain: ATCC 204508 / S288c / References: UniProt: P33411
#22: Protein Pre-mRNA-splicing factor SLU7 / Synthetic lethal with U2 snRNA protein 17 / Synthetic lethal with U5 snRNA protein 7


Mass: 44722.875 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288c (yeast) / Strain: ATCC 204508 / S288c / References: UniProt: Q02775
#23: Protein Pre-mRNA-splicing factor ATP-dependent RNA helicase PRP22


Mass: 130187.359 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288c (yeast) / Strain: ATCC 204508 / S288c / References: UniProt: P24384, RNA helicase

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RNA chain , 4 types, 4 molecules BDEF

#2: RNA chain U5 snRNA / U5 spliceosomal RNA


Mass: 68643.344 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288c (yeast) / Strain: ATCC 204508 / S288c
#4: RNA chain U6 snRNA / U6 spliceosomal RNA


Mass: 35883.176 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288c (yeast) / Strain: ATCC 204508 / S288c
#5: RNA chain mRNA/intron lariat


Mass: 113649.156 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288c (yeast) / Strain: ATCC 204508 / S288c
#6: RNA chain U2 snRNA / U2 spliceosomal RNA


Mass: 376267.406 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288c (yeast) / Strain: ATCC 204508 / S288c

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

#13: Protein Pre-mRNA-processing factor 17 / Cell division control protein 40


Mass: 52128.762 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288c (yeast) / Strain: ATCC 204508 / S288c / References: UniProt: P40968
#33: Protein
Pre-mRNA-processing factor 19 / RING-type E3 ubiquitin transferase PRP19


Mass: 56629.777 Da / Num. of mol.: 4 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288c (yeast) / Strain: ATCC 204508 / S288c
References: UniProt: P32523, RING-type E3 ubiquitin transferase

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Protein , 2 types, 3 molecules Qah

#18: Protein Pre-mRNA-processing protein 45


Mass: 42548.727 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288c (yeast) / Strain: ATCC 204508 / S288c / References: UniProt: P28004
#24: Protein Small nuclear ribonucleoprotein-associated protein B / snRNP-B / Sm protein B / SmB


Mass: 22426.990 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288c (yeast) / Strain: ATCC 204508 / S288c / References: UniProt: P40018

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

#25: Protein Small nuclear ribonucleoprotein E / snRNP-E / Sm protein E / SmE


Mass: 10385.098 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288c (yeast) / Strain: ATCC 204508 / S288c / References: UniProt: Q12330
#26: Protein Small nuclear ribonucleoprotein F / snRNP-F / Sm protein F / SmF


Mass: 9669.945 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288c (yeast) / Strain: ATCC 204508 / S288c / References: UniProt: P54999
#27: Protein Small nuclear ribonucleoprotein G / snRNP-G / Sm protein G / SmG


Mass: 8490.809 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288c (yeast) / Strain: ATCC 204508 / S288c / References: UniProt: P40204
#28: Protein Small nuclear ribonucleoprotein Sm D3 / Sm-D3 / snRNP core protein D3


Mass: 11240.139 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288c (yeast) / Strain: ATCC 204508 / S288c / References: UniProt: P43321
#29: Protein Small nuclear ribonucleoprotein Sm D1 / Sm-D1 / snRNP core protein D1


Mass: 16296.798 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288c (yeast) / Strain: ATCC 204508 / S288c / References: UniProt: Q02260
#30: Protein Small nuclear ribonucleoprotein Sm D2 / Sm-D2 / snRNP core protein D2


Mass: 12876.066 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288c (yeast) / Strain: ATCC 204508 / S288c / References: UniProt: Q06217

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

#31: Protein U2 small nuclear ribonucleoprotein A' / U2 snRNP A' / Looks exceptionally like U2A protein 1


Mass: 27232.252 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288c (yeast) / Strain: ATCC 204508 / S288c / References: UniProt: Q08963
#32: Protein U2 small nuclear ribonucleoprotein B'' / U2 snRNP B''


Mass: 12850.944 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288c (yeast) / Strain: ATCC 204508 / S288c / References: UniProt: P40567

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Non-polymers , 4 types, 14 molecules

#34: 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
#35: Chemical ChemComp-GTP / GUANOSINE-5'-TRIPHOSPHATE / Guanosine 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.: 6 / Source method: obtained synthetically / Formula: Mg
#37: Chemical
ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 6 / Source method: obtained synthetically / Formula: Zn

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Details

Sequence detailsThe OP bond between G-1 and G1 is broken.

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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: the Post-catalytic Spliceosome (P complex) / Type: COMPLEX / Entity ID: #1-#33 / Source: NATURAL
Source (natural)Organism: Saccharomyces cerevisiae S288c (yeast)
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 / Cs: 2.7 mm / Alignment procedure: BASIC
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingElectron dose: 50 e/Å2 / Film or detector model: GATAN K2 SUMMIT (4k x 4k)

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Processing

SoftwareName: REFMAC / Version: 5.8.0069 / Classification: refinement
EM software
IDNameVersionCategory
21image acquisition
4Gctf0.66CTF correction
10RELION2initial Euler assignment
11RELION2final Euler assignment
12RELION2classification
13RELION23D reconstruction
CTF correctionType: NONE
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionResolution: 3.6 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 134517 / Symmetry type: POINT
RefinementHighest resolution: 3.6 Å
Refinement stepCycle: 1 / Total: 45873
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
ELECTRON MICROSCOPYr_bond_refined_d0.0140.01847481
ELECTRON MICROSCOPYr_bond_other_d0.0020.0241818
ELECTRON MICROSCOPYr_angle_refined_deg1.7191.84565643
ELECTRON MICROSCOPYr_angle_other_deg0.981396735
ELECTRON MICROSCOPYr_dihedral_angle_1_deg10.29454796
ELECTRON MICROSCOPYr_dihedral_angle_2_deg28.98423.9411893
ELECTRON MICROSCOPYr_dihedral_angle_3_deg13.955157427
ELECTRON MICROSCOPYr_dihedral_angle_4_deg15.96315286
ELECTRON MICROSCOPYr_chiral_restr0.0940.27196
ELECTRON MICROSCOPYr_gen_planes_refined0.0080.02148182
ELECTRON MICROSCOPYr_gen_planes_other0.0020.0210832
ELECTRON MICROSCOPYr_nbd_refined
ELECTRON MICROSCOPYr_nbd_other
ELECTRON MICROSCOPYr_nbtor_refined
ELECTRON MICROSCOPYr_nbtor_other
ELECTRON MICROSCOPYr_xyhbond_nbd_refined
ELECTRON MICROSCOPYr_xyhbond_nbd_other
ELECTRON MICROSCOPYr_metal_ion_refined
ELECTRON MICROSCOPYr_metal_ion_other
ELECTRON MICROSCOPYr_symmetry_vdw_refined
ELECTRON MICROSCOPYr_symmetry_vdw_other
ELECTRON MICROSCOPYr_symmetry_hbond_refined
ELECTRON MICROSCOPYr_symmetry_hbond_other
ELECTRON MICROSCOPYr_symmetry_metal_ion_refined
ELECTRON MICROSCOPYr_symmetry_metal_ion_other
ELECTRON MICROSCOPYr_mcbond_it9.75413.52419268
ELECTRON MICROSCOPYr_mcbond_other9.75313.52419267
ELECTRON MICROSCOPYr_mcangle_it15.98620.2824036
ELECTRON MICROSCOPYr_mcangle_other15.98620.28124037
ELECTRON MICROSCOPYr_scbond_it11.00515.40828213
ELECTRON MICROSCOPYr_scbond_other11.00515.40828213
ELECTRON MICROSCOPYr_scangle_it
ELECTRON MICROSCOPYr_scangle_other18.38822.89241608
ELECTRON MICROSCOPYr_long_range_B_refined30.56196151
ELECTRON MICROSCOPYr_long_range_B_other30.56196150
ELECTRON MICROSCOPYr_rigid_bond_restr
ELECTRON MICROSCOPYr_sphericity_free
ELECTRON MICROSCOPYr_sphericity_bonded

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