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- PDB-8k5p: Cryo-EM structure of yeast Rat1-bound Pol II pre-termination tran... -

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Entry
Database: PDB / ID: 8k5p
TitleCryo-EM structure of yeast Rat1-bound Pol II pre-termination transcription complex 2 (Pol II Rat1-PTTC2)
Components
  • (DNA (38-MER)) x 2
  • (DNA-directed RNA polymerase II subunit ...) x 7
  • (DNA-directed RNA polymerases I, II, and III subunit ...) x 5
  • 5'-3' exoribonuclease 2
  • Decapping nuclease RAI1
  • RNA
  • Transcription elongation factor SPT5
KeywordsTRANSCRIPTION / Transcription termination / Pol II / Rat1/Rai1 Spt5
Function / homology
Function and homology information


negative regulation of transcription elongation by RNA polymerase I / RNA polymerase II termination complex / sno(s)RNA processing / positive regulation of termination of RNA polymerase II transcription / positive regulation of transcription elongation by RNA polymerase I / RNA NAD+-cap (NAD+-forming) hydrolase activity / termination of RNA polymerase II transcription, poly(A)-coupled / Las1 complex / termination of RNA polymerase II transcription, exosome-dependent / Butyrate Response Factor 1 (BRF1) binds and destabilizes mRNA ...negative regulation of transcription elongation by RNA polymerase I / RNA polymerase II termination complex / sno(s)RNA processing / positive regulation of termination of RNA polymerase II transcription / positive regulation of transcription elongation by RNA polymerase I / RNA NAD+-cap (NAD+-forming) hydrolase activity / termination of RNA polymerase II transcription, poly(A)-coupled / Las1 complex / termination of RNA polymerase II transcription, exosome-dependent / Butyrate Response Factor 1 (BRF1) binds and destabilizes mRNA / Tristetraprolin (TTP, ZFP36) binds and destabilizes mRNA / phosphodiesterase decapping endonuclease activity / deadenylation-independent decapping of nuclear-transcribed mRNA / regulation of transcription-coupled nucleotide-excision repair / mRNA 5'-diphosphatase activity / nuclear polyadenylation-dependent rRNA catabolic process / NAD-cap decapping / regulation of rRNA processing / RNA polymerase I core binding / 5'-3' RNA exonuclease activity / intracellular mRNA localization / DSIF complex / rDNA heterochromatin / nuclear mRNA surveillance / RNA polymerase I general transcription initiation factor binding / RPB4-RPB7 complex / U4 snRNA binding / snRNP binding / maturation of 5.8S rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / nuclear-transcribed mRNA catabolic process, deadenylation-dependent decay / RNA Polymerase I Transcription Initiation / Processing of Capped Intron-Containing Pre-mRNA / RNA Polymerase III Transcription Initiation From Type 2 Promoter / RNA Pol II CTD phosphorylation and interaction with CE / Formation of the Early Elongation Complex / mRNA Capping / RNA polymerase II transcribes snRNA genes / termination of RNA polymerase II transcription / TP53 Regulates Transcription of DNA Repair Genes / transcription elongation-coupled chromatin remodeling / RNA Polymerase II Promoter Escape / RNA Polymerase II Transcription Pre-Initiation And Promoter Opening / RNA Polymerase II Transcription Initiation / RNA Polymerase II Transcription Initiation And Promoter Clearance / termination of RNA polymerase III transcription / cleavage in ITS2 between 5.8S rRNA and LSU-rRNA of tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / RNA Polymerase II Pre-transcription Events / RNA-templated transcription / positive regulation of nuclear-transcribed mRNA poly(A) tail shortening / Formation of TC-NER Pre-Incision Complex / RNA Polymerase I Promoter Escape / spliceosomal complex assembly / transcription initiation at RNA polymerase III promoter / termination of RNA polymerase I transcription / nucleolar large rRNA transcription by RNA polymerase I / Gap-filling DNA repair synthesis and ligation in TC-NER / RNA polymerase II complex binding / transcription initiation at RNA polymerase I promoter / negative regulation of transcription elongation by RNA polymerase II / Estrogen-dependent gene expression / maintenance of transcriptional fidelity during transcription elongation by RNA polymerase II / nuclear-transcribed mRNA catabolic process / positive regulation of translational initiation / Hydrolases; Acting on acid anhydrides; In phosphorus-containing anhydrides / Dual incision in TC-NER / U5 snRNA binding / U2 snRNA binding / U6 snRNA binding / transcription by RNA polymerase III / transcription by RNA polymerase I / translesion synthesis / RNA polymerase I complex / transcription elongation by RNA polymerase I / RNA polymerase III complex / transcription-coupled nucleotide-excision repair / U1 snRNA binding / RNA polymerase II, core complex / tRNA transcription by RNA polymerase III / : / enzyme regulator activity / translation initiation factor binding / positive regulation of autophagy / DNA-directed RNA polymerase activity / maturation of LSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / positive regulation of transcription elongation by RNA polymerase II / transcription initiation at RNA polymerase II promoter / DNA-templated transcription initiation / transcription elongation by RNA polymerase II / P-body / mRNA splicing, via spliceosome / ribonucleoside binding / : / : / : / : / : / : / DNA-directed RNA polymerase / mRNA processing / cytoplasmic stress granule
Similarity search - Function
5'-3' exoribonuclease type 2 / Xrn1, N-terminal / 5'-3' exoribonuclease / Xrn1, helical domain / XRN 5'-3' exonuclease N-terminus / Xrn1 helical domain / RAI1-like / RAI1-like family / RAI1 like PD-(D/E)XK nuclease / Spt5 C-terminal nonapeptide repeat binding Spt4 ...5'-3' exoribonuclease type 2 / Xrn1, N-terminal / 5'-3' exoribonuclease / Xrn1, helical domain / XRN 5'-3' exonuclease N-terminus / Xrn1 helical domain / RAI1-like / RAI1-like family / RAI1 like PD-(D/E)XK nuclease / Spt5 C-terminal nonapeptide repeat binding Spt4 / Transcription elongation factor SPT5, KOWx domain / Transcription elongation factor SPT5, KOW1 domain / Transcription elongation factor SPT5, second KOW domain / Transcription elongation factor SPT5, fifth KOW domain / Transcription elongation factor SPT5, fourth KOW domain / Transcription elongation factor Spt5, eukaryote / Spt5 transcription elongation factor, N-terminal / Spt5, KOW domain repeat 2 / Spt5, KOW domain repeat 3 / Spt5, KOW domain repeat 5 / Spt5 transcription elongation factor, acidic N-terminal / NGN domain, eukaryotic / Spt5, KOW domain repeat 1 / Spt5, KOW domain repeat 4 / Spt5 C-terminal domain / Spt5 C-terminal nonapeptide repeat binding Spt4 / NGN domain / Transcription elongation factor SPT5 / Early transcription elongation factor of RNA pol II, NGN section / NusG, N-terminal / In Spt5p, this domain may confer affinity for Spt4p. It possesses a RNP-like fold. / NusG, N-terminal domain superfamily / DNA-directed RNA polymerase II subunit Rpb4-like / RNA polymerase Rpb1 C-terminal repeat / RNA polymerase II, heptapeptide repeat, eukaryotic / Eukaryotic RNA polymerase II heptapeptide repeat. / RNA polymerase Rpb1, domain 6 / RNA polymerase Rpb1, domain 6 / RNA polymerase Rpb4/RPC9, core / DNA-directed RNA-polymerase II subunit / RNA polymerase Rpb1, domain 7 / RNA polymerase Rpb1, domain 7 superfamily / RNA polymerase Rpb1, domain 7 / Pol II subunit B9, C-terminal zinc ribbon / RNA polymerase RBP11 / Rpb4/RPC9 superfamily / RNA polymerase subunit Rpb4/RPC9 / RNA polymerase Rpb4 / Zinc finger TFIIS-type signature. / HRDC-like superfamily / RNA polymerase Rpb7-like , N-terminal / RNA polymerase Rpb7-like, N-terminal domain superfamily / RNA polymerase subunit Rpb7-like / SHS2 domain found in N terminus of Rpb7p/Rpc25p/MJ0397 / RNA polymerase Rpb2, domain 5 / RNA polymerase Rpb2, domain 5 / RNA polymerase Rpb2, domain 4 / RNA polymerase Rpb2, domain 4 / DNA-directed RNA polymerase, M/15kDa subunit / RNA polymerases M/15 Kd subunit / RNA polymerase subunit 9 / DNA-directed RNA polymerase M, 15kDa subunit, conserved site / RNA polymerases M / 15 Kd subunits signature. / DNA-directed RNA polymerase subunit/transcription factor S / : / RNA polymerase, Rpb8 / DNA-directed RNA polymerases I, II, and III subunit RPABC4 / RNA polymerase Rpb8 / RNA polymerase subunit 8 / RNA polymerase, Rpb5, N-terminal / RNA polymerase Rpb5, N-terminal domain superfamily / RNA polymerase Rpb5, N-terminal domain / DNA-directed RNA polymerase, subunit RPB6 / DNA-directed RNA polymerase subunit RPABC5/Rpb10 / RNA polymerases, subunit N, zinc binding site / RNA polymerase subunit RPB10 / RNA polymerases N / 8 kDa subunit / RNA polymerases N / 8 Kd subunits signature. / DNA directed RNA polymerase, 7 kDa subunit / RNA polymerase archaeal subunit P/eukaryotic subunit RPABC4 / RNA polymerase, subunit H/Rpb5, conserved site / RNA polymerases H / 23 Kd subunits signature. / RNA polymerase subunit CX / DNA-directed RNA polymerase, 30-40kDa subunit, conserved site / DNA-directed RNA polymerase subunit Rpo3/Rpb3/RPAC1 / RNA polymerases D / 30 to 40 Kd subunits signature. / DNA-directed RNA polymerase Rpb11, 13-16kDa subunit, conserved site / DNA-directed RNA polymerase subunit Rpo11 / RNA polymerases L / 13 to 16 Kd subunits signature. / Zinc finger, TFIIS-type / Transcription factor S-II (TFIIS) / Zinc finger TFIIS-type profile. / C2C2 Zinc finger / RNA polymerase subunit RPABC4/transcription elongation factor Spt4 / DNA-directed RNA polymerase, RBP11-like dimerisation domain / RNA polymerase Rpb3/Rpb11 dimerisation domain / RNA polymerase, subunit H/Rpb5 C-terminal / DNA-directed RNA polymerase subunit Rpo5/Rpb5 / RPB5-like RNA polymerase subunit superfamily / RNA polymerase Rpb5, C-terminal domain
Similarity search - Domain/homology
DNA / DNA (> 10) / RNA / RNA (> 10) / DNA-directed RNA polymerase II subunit RPB1 / DNA-directed RNA polymerase II subunit RPB2 / DNA-directed RNA polymerase II subunit RPB3 / DNA-directed RNA polymerase II subunit RPB4 / DNA-directed RNA polymerases I, II, and III subunit RPABC1 / DNA-directed RNA polymerases I, II, and III subunit RPABC2 ...DNA / DNA (> 10) / RNA / RNA (> 10) / DNA-directed RNA polymerase II subunit RPB1 / DNA-directed RNA polymerase II subunit RPB2 / DNA-directed RNA polymerase II subunit RPB3 / DNA-directed RNA polymerase II subunit RPB4 / DNA-directed RNA polymerases I, II, and III subunit RPABC1 / DNA-directed RNA polymerases I, II, and III subunit RPABC2 / DNA-directed RNA polymerases I, II, and III subunit RPABC3 / DNA-directed RNA polymerases I, II, and III subunit RPABC5 / Transcription elongation factor SPT5 / DNA-directed RNA polymerase II subunit RPB9 / DNA-directed RNA polymerase II subunit RPB7 / DNA-directed RNA polymerase II subunit RPB11 / DNA-directed RNA polymerases I, II, and III subunit RPABC4 / Decapping nuclease RAI1 / 5'-3' exoribonuclease 2
Similarity search - Component
Biological speciesSaccharomyces cerevisiae S288C (yeast)
synthetic construct (others)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.8 Å
AuthorsZeng, Y. / Zhang, Y.
Funding support China, 2items
OrganizationGrant numberCountry
Other governmentJCYJ-SHFY-2022-012 China
Other government2018YFA0900700 China
CitationJournal: Nature / Year: 2024
Title: Structural basis of exoribonuclease-mediated mRNA transcription termination.
Authors: Yuan Zeng / Hong-Wei Zhang / Xiao-Xian Wu / Yu Zhang /
Abstract: Efficient termination is required for robust gene transcription. Eukaryotic organisms use a conserved exoribonuclease-mediated mechanism to terminate the mRNA transcription by RNA polymerase II ...Efficient termination is required for robust gene transcription. Eukaryotic organisms use a conserved exoribonuclease-mediated mechanism to terminate the mRNA transcription by RNA polymerase II (Pol II). Here we report two cryogenic electron microscopy structures of Saccharomyces cerevisiae Pol II pre-termination transcription complexes bound to the 5'-to-3' exoribonuclease Rat1 and its partner Rai1. Our structures show that Rat1 displaces the elongation factor Spt5 to dock at the Pol II stalk domain. Rat1 shields the RNA exit channel of Pol II, guides the nascent RNA towards its active centre and stacks three nucleotides at the 5' terminus of the nascent RNA. The structures further show that Rat1 rotates towards Pol II as it shortens RNA. Our results provide the structural mechanism for the Rat1-mediated termination of mRNA transcription by Pol II in yeast and the exoribonuclease-mediated termination of mRNA transcription in other eukaryotes.
History
DepositionJul 23, 2023Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Jan 31, 2024Provider: repository / Type: Initial release
Revision 1.1Apr 10, 2024Group: Database references / Category: citation / citation_author
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_ASTM / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year / _citation_author.identifier_ORCID / _citation_author.name
Revision 1.2May 8, 2024Group: 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 1.3May 15, 2024Group: Database references / Category: citation_author / Item: _citation_author.identifier_ORCID

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: DNA-directed RNA polymerase II subunit RPB1
B: DNA-directed RNA polymerase II subunit RPB2
C: DNA-directed RNA polymerase II subunit RPB3
E: DNA-directed RNA polymerases I, II, and III subunit RPABC1
F: DNA-directed RNA polymerases I, II, and III subunit RPABC2
H: DNA-directed RNA polymerases I, II, and III subunit RPABC3
I: DNA-directed RNA polymerase II subunit RPB9
J: DNA-directed RNA polymerases I, II, and III subunit RPABC5
K: DNA-directed RNA polymerase II subunit RPB11
L: DNA-directed RNA polymerases I, II, and III subunit RPABC4
N: DNA (38-MER)
P: RNA
T: DNA (38-MER)
W: Transcription elongation factor SPT5
D: DNA-directed RNA polymerase II subunit RPB4
G: DNA-directed RNA polymerase II subunit RPB7
M: 5'-3' exoribonuclease 2
O: Decapping nuclease RAI1
hetero molecules


Theoretical massNumber of molelcules
Total (without water)834,10629
Polymers833,51018
Non-polymers59611
Water00
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1

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Components

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DNA-directed RNA polymerase II subunit ... , 7 types, 7 molecules ABCIKDG

#1: Protein DNA-directed RNA polymerase II subunit RPB1 / RNA polymerase II subunit 1 / RNA polymerase II subunit B1 / DNA-directed RNA polymerase III ...RNA polymerase II subunit 1 / RNA polymerase II subunit B1 / DNA-directed RNA polymerase III largest subunit / RNA polymerase II subunit B220


Mass: 191821.578 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288C (yeast) / Strain: S288c / References: UniProt: P04050, DNA-directed RNA polymerase
#2: Protein DNA-directed RNA polymerase II subunit RPB2 / RNA polymerase II subunit 2 / B150 / DNA-directed RNA polymerase II 140 kDa polypeptide


Mass: 143336.766 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Details: Residues (1225B-1259B) are an affinity tag(containing a TEV-6xHis-3xFlag tag) we modified in the genome of target strain for convenient protein purification.
Source: (gene. exp.) Saccharomyces cerevisiae S288C (yeast) / Strain: S288c / Gene: RPB2 / Production host: Escherichia coli BL21(DE3) (bacteria) / Strain (production host): BL21(DE3) / References: UniProt: P08518, DNA-directed RNA polymerase
#3: Protein DNA-directed RNA polymerase II subunit RPB3 / RNA polymerase II subunit 3 / RNA polymerase II subunit B3 / B44.5 / DNA-directed RNA polymerase II ...RNA polymerase II subunit 3 / RNA polymerase II subunit B3 / B44.5 / DNA-directed RNA polymerase II 45 kDa polypeptide


Mass: 35330.457 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288C (yeast) / Strain: S288c / References: UniProt: P16370
#7: Protein DNA-directed RNA polymerase II subunit RPB9 / RNA polymerase II subunit B9 / B12.6 / DNA-directed RNA polymerase II 14.2 kDa polypeptide / DNA- ...RNA polymerase II subunit B9 / B12.6 / DNA-directed RNA polymerase II 14.2 kDa polypeptide / DNA-directed RNA polymerase II subunit 9


Mass: 14308.161 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288C (yeast) / References: UniProt: P27999
#9: Protein DNA-directed RNA polymerase II subunit RPB11 / RNA polymerase II subunit B11 / B13.6 / DNA-directed RNA polymerase II 13.6 kDa polypeptide


Mass: 13633.493 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288C (yeast) / References: UniProt: P38902
#15: Protein DNA-directed RNA polymerase II subunit RPB4 / RNA polymerase II subunit B4 / B32 / DNA-directed RNA polymerase II 32 kDa polypeptide


Mass: 25451.191 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288C (yeast) / Strain: S288c / References: UniProt: P20433
#16: Protein DNA-directed RNA polymerase II subunit RPB7 / RNA polymerase II subunit B7 / B16


Mass: 19081.053 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288C (yeast) / Strain: S288c / References: UniProt: P34087

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DNA-directed RNA polymerases I, II, and III subunit ... , 5 types, 5 molecules EFHJL

#4: Protein DNA-directed RNA polymerases I, II, and III subunit RPABC1 / RNA polymerases I / II / and III subunit ABC1 / ABC27 / DNA-directed RNA polymerases I / and III 27 ...RNA polymerases I / II / and III subunit ABC1 / ABC27 / DNA-directed RNA polymerases I / and III 27 kDa polypeptide


Mass: 25117.094 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288C (yeast) / Strain: S288c / References: UniProt: P20434
#5: Protein DNA-directed RNA polymerases I, II, and III subunit RPABC2 / RNA polymerases I / II / and III subunit ABC2 / ABC23 / DNA-directed RNA polymerases I / and III 23 ...RNA polymerases I / II / and III subunit ABC2 / ABC23 / DNA-directed RNA polymerases I / and III 23 kDa polypeptide


Mass: 17931.834 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288C (yeast) / Strain: S288c / References: UniProt: P20435
#6: Protein DNA-directed RNA polymerases I, II, and III subunit RPABC3 / RNA polymerases I / II / and III subunit ABC3 / ABC14.4 / ABC14.5 / DNA-directed RNA polymerases I ...RNA polymerases I / II / and III subunit ABC3 / ABC14.4 / ABC14.5 / DNA-directed RNA polymerases I / and III 14.5 kDa polypeptide


Mass: 16525.363 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288C (yeast) / Strain: S288c / References: UniProt: P20436
#8: Protein DNA-directed RNA polymerases I, II, and III subunit RPABC5 / RNA polymerases I / II / and III subunit ABC5 / ABC10-beta / ABC8 / DNA-directed RNA polymerases I ...RNA polymerases I / II / and III subunit ABC5 / ABC10-beta / ABC8 / DNA-directed RNA polymerases I / and III 8.3 kDa polypeptide


Mass: 8290.732 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288C (yeast) / Strain: S288c / References: UniProt: P22139
#10: Protein DNA-directed RNA polymerases I, II, and III subunit RPABC4 / RNA polymerases I / II / and III subunit ABC4 / ABC10-alpha


Mass: 7729.969 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Saccharomyces cerevisiae S288C (yeast) / References: UniProt: P40422

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DNA chain , 2 types, 2 molecules NT

#11: DNA chain DNA (38-MER)


Mass: 14935.569 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others)
#13: DNA chain DNA (38-MER)


Mass: 14633.406 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others)

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RNA chain , 1 types, 1 molecules P

#12: RNA chain RNA


Mass: 6446.904 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others)

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Protein , 3 types, 3 molecules WMO

#14: Protein Transcription elongation factor SPT5 / Chromatin elongation factor SPT5


Mass: 116758.031 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Saccharomyces cerevisiae S288C (yeast) / Gene: SPT5 / Production host: Escherichia coli BL21(DE3) (bacteria) / Strain (production host): BL21(DE3) / References: UniProt: P27692
#17: Protein 5'-3' exoribonuclease 2 / Ribonucleic acid-trafficking protein 1 / p116


Mass: 117606.508 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Saccharomyces cerevisiae S288C (yeast) / Strain: S288c / Gene: RAT1, HKE1 / Production host: Escherichia coli BL21(DE3) (bacteria) / Strain (production host): BL21(DE3)
References: UniProt: Q02792, Hydrolases; Acting on ester bonds; Exoribonucleases producing 5'-phosphomonoesters
#18: Protein Decapping nuclease RAI1 / ScRai1 / NAD-capped RNA hydrolase RAI1 / DeNADding enzyme RAI1 / RAT1-interacting protein


Mass: 44571.445 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Saccharomyces cerevisiae S288C (yeast) / Strain: S288c / Gene: RAI1 / Production host: Escherichia coli BL21(DE3) (bacteria) / Strain (production host): BL21(DE3)
References: UniProt: P53063, Hydrolases; Acting on acid anhydrides; In phosphorus-containing anhydrides

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Non-polymers , 2 types, 11 molecules

#19: Chemical
ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 8 / Source method: obtained synthetically / Formula: Zn / Feature type: SUBJECT OF INVESTIGATION
#20: Chemical ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 3 / Source method: obtained synthetically / Formula: Mg / Feature type: SUBJECT OF INVESTIGATION

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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: RNA Polymerase II pre-termination complex bound with Rat1-Rai1 and Spt5(PTC2)
Type: COMPLEX / Entity ID: #1-#18 / Source: RECOMBINANT
Source (natural)Organism: Saccharomyces cerevisiae S288C (yeast)
Source (recombinant)Organism: Escherichia coli BL21(DE3) (bacteria) / Strain: BL21(DE3)
Buffer solutionpH: 7.4
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: DARK FIELD / Nominal defocus max: 1800 nm / Nominal defocus min: 1000 nm / Cs: 0.01 mm
Image recordingElectron dose: 50 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

CTF correctionType: PHASE FLIPPING ONLY
3D reconstructionResolution: 2.8 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 265756 / Symmetry type: POINT
RefinementCross valid method: NONE
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.002343748
ELECTRON MICROSCOPYf_angle_d0.550359556
ELECTRON MICROSCOPYf_chiral_restr0.04026663
ELECTRON MICROSCOPYf_plane_restr0.00377382
ELECTRON MICROSCOPYf_dihedral_angle_d12.76916560

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