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- PDB-7f4g: Structure of RPAP2-bound RNA polymerase II -

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Basic information

Entry
Database: PDB / ID: 7f4g
TitleStructure of RPAP2-bound RNA polymerase II
Components
  • (DNA-directed RNA ...) x 8
  • RNA_pol_L_2 domain-containing protein
  • RPAP2
  • RPB1
  • RPB10
  • RPB12
KeywordsTRANSCRIPTION / RPAP2 / RNA Polymerase II
Function / homology
Function and homology information


Formation of RNA Pol II elongation complex / Formation of the Early Elongation Complex / Transcriptional regulation by small RNAs / RNA Polymerase II Pre-transcription Events / TP53 Regulates Transcription of DNA Repair Genes / FGFR2 alternative splicing / RNA polymerase II transcribes snRNA genes / mRNA Capping / mRNA Splicing - Minor Pathway / Processing of Capped Intron-Containing Pre-mRNA ...Formation of RNA Pol II elongation complex / Formation of the Early Elongation Complex / Transcriptional regulation by small RNAs / RNA Polymerase II Pre-transcription Events / TP53 Regulates Transcription of DNA Repair Genes / FGFR2 alternative splicing / RNA polymerase II transcribes snRNA genes / mRNA Capping / mRNA Splicing - Minor Pathway / Processing of Capped Intron-Containing Pre-mRNA / RNA Polymerase II Promoter Escape / RNA Polymerase II Transcription Pre-Initiation And Promoter Opening / RNA Polymerase II Transcription Initiation / RNA Polymerase II Transcription Elongation / RNA Polymerase II Transcription Initiation And Promoter Clearance / RNA Pol II CTD phosphorylation and interaction with CE / Estrogen-dependent gene expression / Formation of TC-NER Pre-Incision Complex / Dual incision in TC-NER / Gap-filling DNA repair synthesis and ligation in TC-NER / mRNA Splicing - Major Pathway / maintenance of transcriptional fidelity during transcription elongation by RNA polymerase II / RNA polymerase I complex / RNA polymerase III complex / RNA polymerase II, core complex / tRNA transcription by RNA polymerase III / transcription by RNA polymerase I / transcription-coupled nucleotide-excision repair / DNA-directed RNA polymerase complex / transcription initiation at RNA polymerase II promoter / DNA-templated transcription initiation / ribonucleoside binding / fibrillar center / DNA-directed RNA polymerase / DNA-directed RNA polymerase activity / nucleic acid binding / transcription by RNA polymerase II / protein dimerization activity / hydrolase activity / nucleotide binding / DNA-templated transcription / nucleolus / DNA binding / zinc ion binding / nucleoplasm / nucleus / cytosol
Similarity search - Function
Dna-directed Rna Polymerase Ii 140kd Polypeptide; Chain: B; domain 3 / RNA polymerase Rpb2, domain 2 / DNA-directed RNA polymerase II subunit Rpb4-like / RNA polymerase Rpb4/RPC9, core / DNA-directed RNA-polymerase II subunit / Pol II subunit B9, C-terminal zinc ribbon / RNA polymerase RBP11 / Rpb4/RPC9 superfamily / RNA polymerase subunit Rpb4/RPC9 / RNA polymerase Rpb4 ...Dna-directed Rna Polymerase Ii 140kd Polypeptide; Chain: B; domain 3 / RNA polymerase Rpb2, domain 2 / DNA-directed RNA polymerase II subunit Rpb4-like / RNA polymerase Rpb4/RPC9, core / DNA-directed RNA-polymerase II subunit / 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. / 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 / HRDC-like superfamily / 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, 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. / RNA polymerase subunit RPABC4/transcription elongation factor Spt4 / Zinc finger, TFIIS-type / Transcription factor S-II (TFIIS) / Zinc finger TFIIS-type profile. / C2C2 Zinc finger / 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 / Archaeal Rpo6/eukaryotic RPB6 RNA polymerase subunit / DNA-directed RNA polymerase, 14-18kDa subunit, conserved site / RNA polymerases K / 14 to 18 Kd subunits signature. / Ribosomal protein S1-like RNA-binding domain / S1 RNA binding domain / S1 domain / RNA polymerase Rpb6 / RNA polymerase, subunit omega/Rpo6/RPB6 / RNA polymerase Rpb6 / RNA polymerase Rpb2, domain 2 superfamily / RPB6/omega subunit-like superfamily / DNA-directed RNA polymerase, insert domain / DNA-directed RNA polymerase, RpoA/D/Rpb3-type / RNA polymerase Rpb3/RpoA insert domain / RNA polymerase Rpb3/Rpb11 dimerisation domain / RNA polymerases D / RNA polymerase, beta subunit, protrusion / RNA polymerase beta subunit / DNA-directed RNA polymerase, insert domain superfamily / RNA polymerase Rpb2, domain 2 / RNA polymerase Rpb2, domain 2 / RNA polymerase, RBP11-like subunit / RNA polymerase, beta subunit, conserved site / RNA polymerase Rpb2, domain 7 / RNA polymerase Rpb2, domain 3 / RNA polymerase Rpb2, OB-fold / RNA polymerase Rpb2, domain 7 / RNA polymerase Rpb2, domain 3 / RNA polymerases beta chain signature. / DNA-directed RNA polymerase, subunit 2, hybrid-binding domain / DNA-directed RNA polymerase, subunit 2 / DNA-directed RNA polymerase, subunit 2, hybrid-binding domain superfamily / RNA polymerase Rpb2, domain 6 / Nucleic acid-binding, OB-fold / Alpha-Beta Complex / Alpha Beta
Similarity search - Domain/homology
DNA-directed RNA polymerase II subunit RPB4 / DNA-directed RNA polymerases I, II, and III subunit RPABC4 / DNA-directed RNA polymerase subunit beta / DNA-directed RNA polymerase II subunit RPB11-a / DNA-directed RNA polymerases I, II, and III subunit RPABC3 / DNA-directed RNA polymerases I, II, and III subunit RPABC2 / DNA-directed RNA polymerase subunit / DNA-directed RNA polymerases I, II, and III subunit RPABC1 / DNA-directed RNA polymerase II subunit RPB3 / DNA-directed RNA polymerase II subunit RPB9
Similarity search - Component
Biological speciesHomo sapiens (human)
Sus scrofa (pig)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.78 Å
AuthorsChen, X. / Qi, Y. / Wang, X. / Li, J. / Zhao, D. / Xu, Y.
CitationJournal: Cell Rep / Year: 2022
Title: RPAP2 regulates a transcription initiation checkpoint by inhibiting assembly of pre-initiation complex.
Authors: Xinxin Wang / Yilun Qi / Zhenning Wang / Li Wang / Aixia Song / Bolin Tao / Jiabei Li / Dan Zhao / Hongwei Zhang / Qianwei Jin / Yi-Zhou Jiang / Fei Xavier Chen / Yanhui Xu / Xizi Chen /
Abstract: RNA polymerase II (Pol II)-mediated transcription in metazoans requires precise regulation. RNA Pol II-associated protein 2 (RPAP2) was previously identified to transport Pol II from cytoplasm to ...RNA polymerase II (Pol II)-mediated transcription in metazoans requires precise regulation. RNA Pol II-associated protein 2 (RPAP2) was previously identified to transport Pol II from cytoplasm to nucleus and dephosphorylates Pol II C-terminal domain (CTD). Here, we show that RPAP2 binds hypo-/hyper-phosphorylated Pol II with undetectable phosphatase activity. The structure of RPAP2-Pol II shows mutually exclusive assembly of RPAP2-Pol II and pre-initiation complex (PIC) due to three steric clashes. RPAP2 prevents and disrupts Pol II-TFIIF interaction and impairs in vitro transcription initiation, suggesting a function in inhibiting PIC assembly. Loss of RPAP2 in cells leads to global accumulation of TFIIF and Pol II at promoters, indicating a critical role of RPAP2 in inhibiting PIC assembly independent of its putative phosphatase activity. Our study indicates that RPAP2 functions as a gatekeeper to inhibit PIC assembly and transcription initiation and suggests a transcription checkpoint.
History
DepositionJun 18, 2021Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Jul 7, 2021Provider: repository / Type: Initial release
Revision 1.1Jul 20, 2022Group: Database references / Category: citation / citation_author / database_2
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year / _database_2.pdbx_DOI / _database_2.pdbx_database_accession
Revision 1.2Oct 23, 2024Group: Data collection / Structure summary
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / em_admin / pdbx_entry_details / pdbx_modification_feature
Item: _em_admin.last_update / _pdbx_entry_details.has_protein_modification

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Structure visualization

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Assembly

Deposited unit
A: RPB1
B: DNA-directed RNA polymerase subunit beta
C: DNA-directed RNA polymerase II subunit RPB3
E: DNA-directed RNA polymerase II subunit E
F: DNA-directed RNA polymerase II subunit F
H: DNA-directed RNA polymerases I, II, and III subunit RPABC3
I: DNA-directed RNA polymerase II subunit RPB9
J: RPB10
K: RNA_pol_L_2 domain-containing protein
L: RPB12
R: RPAP2
D: DNA-directed RNA polymerase II subunit RPB4
G: DNA-directed RNA polymerase II subunit RPB7
hetero molecules


Theoretical massNumber of molelcules
Total (without water)587,29618
Polymers586,96913
Non-polymers3275
Water00
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_5551
Buried area52850 Å2
ΔGint-291 kcal/mol
Surface area137680 Å2

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Components

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Protein , 5 types, 5 molecules AJKLR

#1: Protein RPB1


Mass: 217420.047 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Sus scrofa (pig)
#8: Protein RPB10


Mass: 7655.123 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Sus scrofa (pig)
#9: Protein RNA_pol_L_2 domain-containing protein


Mass: 13310.284 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Sus scrofa (pig) / References: UniProt: A0A4X1UK25
#10: Protein RPB12


Mass: 7018.244 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Sus scrofa (pig) / References: UniProt: A0A4X1TRS6
#11: Protein RPAP2


Mass: 69614.773 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Production host: Homo sapiens (human)

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DNA-directed RNA ... , 8 types, 8 molecules BCEFHIDG

#2: Protein DNA-directed RNA polymerase subunit beta


Mass: 134041.422 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Sus scrofa (pig)
References: UniProt: A0A4X1TVZ5, DNA-directed RNA polymerase
#3: Protein DNA-directed RNA polymerase II subunit RPB3 / RNA polymerase II subunit C


Mass: 31439.074 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Sus scrofa (pig) / References: UniProt: I3LCH3
#4: Protein DNA-directed RNA polymerase II subunit E / RPB5 homolog


Mass: 24644.318 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Sus scrofa (pig) / References: UniProt: A0A4X1VTX4
#5: Protein DNA-directed RNA polymerase II subunit F / DNA-directed RNA polymerases I / II / and III subunit RPABC2 / RPB6 homolog


Mass: 14477.001 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Sus scrofa (pig) / References: UniProt: A0A4X1VEK9
#6: Protein DNA-directed RNA polymerases I, II, and III subunit RPABC3


Mass: 17162.273 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Sus scrofa (pig) / References: UniProt: A0A4X1ULF2
#7: Protein DNA-directed RNA polymerase II subunit RPB9 / RNA polymerase II subunit B9 / DNA-directed RNA polymerase II subunit I / RNA polymerase II 14.5 ...RNA polymerase II subunit B9 / DNA-directed RNA polymerase II subunit I / RNA polymerase II 14.5 kDa subunit / RPB14.5


Mass: 14541.221 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Sus scrofa (pig) / References: UniProt: P60899
#12: Protein DNA-directed RNA polymerase II subunit RPB4 / DNA-directed RNA polymerase II subunit RPB4 isoform X1


Mass: 16331.255 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Sus scrofa (pig) / References: UniProt: A0A481BYI6
#13: Protein DNA-directed RNA polymerase II subunit RPB7


Mass: 19314.283 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Sus scrofa (pig) / References: UniProt: A0A4X1VKG7

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Non-polymers , 1 types, 5 molecules

#14: Chemical
ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 5 / Source method: obtained synthetically / Formula: Zn

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Details

Has ligand of interestN
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: Structure of RPAP2-bound RNA polymerase II / Type: COMPLEX / Entity ID: #1-#13 / 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 FIELD
Image recordingElectron dose: 50 e/Å2 / Film or detector model: GATAN K2 SUMMIT (4k x 4k)

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Processing

CTF correctionType: NONE
3D reconstructionResolution: 2.78 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 646517 / Symmetry type: POINT

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