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- PDB-7d59: cryo-EM structure of human RNA polymerase III in apo state -

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Entry
Database: PDB / ID: 7d59
Titlecryo-EM structure of human RNA polymerase III in apo state
Components
  • (DNA-directed RNA polymerase III subunit ...) x 10
  • (DNA-directed RNA polymerases I and III subunit ...) x 2
  • (DNA-directed RNA polymerases I, II, and III subunit ...) x 5
KeywordsTRANSCRIPTION / RNA Polymerase III
Function / homology
Function and homology information


snRNA transcription by RNA polymerase III / RNA Polymerase III Chain Elongation / RNA Polymerase III Transcription Termination / calcitonin gene-related peptide receptor activity / DNA/RNA hybrid binding / regulation of transcription by RNA polymerase I / regulation of transcription by RNA polymerase III / RPAP3/R2TP/prefoldin-like complex / DNA polymerase III complex / Cytosolic sensors of pathogen-associated DNA ...snRNA transcription by RNA polymerase III / RNA Polymerase III Chain Elongation / RNA Polymerase III Transcription Termination / calcitonin gene-related peptide receptor activity / DNA/RNA hybrid binding / regulation of transcription by RNA polymerase I / regulation of transcription by RNA polymerase III / RPAP3/R2TP/prefoldin-like complex / DNA polymerase III complex / Cytosolic sensors of pathogen-associated DNA / RNA Polymerase III Transcription Initiation From Type 1 Promoter / RNA Polymerase III Transcription Initiation From Type 2 Promoter / RNA Polymerase III Transcription Initiation From Type 3 Promoter / RNA Polymerase III Abortive And Retractive Initiation / positive regulation of innate immune response / Abortive elongation of HIV-1 transcript in the absence of Tat / nucleobase-containing compound metabolic process / RNA Polymerase I Transcription Termination / FGFR2 alternative splicing / MicroRNA (miRNA) biogenesis / Signaling by FGFR2 IIIa TM / Viral Messenger RNA Synthesis / RNA Pol II CTD phosphorylation and interaction with CE during HIV infection / RNA Pol II CTD phosphorylation and interaction with CE / Formation of the Early Elongation Complex / Formation of the HIV-1 Early Elongation Complex / mRNA Capping / PIWI-interacting RNA (piRNA) biogenesis / termination of RNA polymerase III transcription / HIV Transcription Initiation / RNA Polymerase II HIV Promoter Escape / Transcription of the HIV genome / 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 / RNA polymerase III activity / transcription initiation at RNA polymerase III promoter / mRNA Splicing - Minor Pathway / RNA Polymerase I Transcription Initiation / Pausing and recovery of Tat-mediated HIV elongation / Tat-mediated HIV elongation arrest and recovery / transcription by RNA polymerase I / HIV elongation arrest and recovery / Pausing and recovery of HIV elongation / Processing of Capped Intron-Containing Pre-mRNA / transcription by RNA polymerase III / RNA polymerase II transcribes snRNA genes / neuropeptide signaling pathway / Tat-mediated elongation of the HIV-1 transcript / transcription elongation by RNA polymerase I / Formation of HIV-1 elongation complex containing HIV-1 Tat / tRNA transcription by RNA polymerase III / RNA polymerase I activity / RNA polymerase I complex / RNA polymerase III complex / Formation of HIV elongation complex in the absence of HIV Tat / RNA polymerase II, core complex / RNA Polymerase II Transcription Elongation / Formation of RNA Pol II elongation complex / RNA Polymerase II Pre-transcription Events / Inhibition of DNA recombination at telomere / positive regulation of interferon-beta production / mRNA Splicing - Major Pathway / acrosomal vesicle / protein-DNA complex / TP53 Regulates Transcription of DNA Repair Genes / RNA Polymerase I Promoter Escape / Transcriptional regulation by small RNAs / NoRC negatively regulates rRNA expression / B-WICH complex positively regulates rRNA expression / Transcription-Coupled Nucleotide Excision Repair (TC-NER) / Formation of TC-NER Pre-Incision Complex / ribonucleoside binding / fibrillar center / DNA-directed 5'-3' RNA polymerase activity / Activation of anterior HOX genes in hindbrain development during early embryogenesis / DNA-directed RNA polymerase / Dual incision in TC-NER / Gap-filling DNA repair synthesis and ligation in TC-NER / single-stranded DNA binding / 4 iron, 4 sulfur cluster binding / double-stranded DNA binding / defense response to virus / Estrogen-dependent gene expression / transcription by RNA polymerase II / cell population proliferation / nucleic acid binding / nuclear body / protein dimerization activity / protein stabilization / intracellular membrane-bounded organelle / innate immune response / nucleotide binding / centrosome / DNA-templated transcription / chromatin binding / magnesium ion binding / DNA binding / zinc ion binding
Similarity search - Function
DNA-directed RNA polymerase III subunit RPC5, C-terminal / DNA-directed RNA polymerase III subunit RPC5 C-terminal / DNA-directed RNA polymerase III subunit RPC4 / RNA polymerase III RPC4 / DNA-directed RNA polymerase III, subunit Rpc31 / DNA-directed RNA polymerase III subunit Rpc31 / Pol III subunit C11, C-terminal zinc ribbon / DNA-directed RNA polymerase III subunit Rpc5 / DNA-directed RNA polymerase III subunit RPC1, N-terminal / DNA-directed RNA polymerase III subunit RPC1, C-terminal ...DNA-directed RNA polymerase III subunit RPC5, C-terminal / DNA-directed RNA polymerase III subunit RPC5 C-terminal / DNA-directed RNA polymerase III subunit RPC4 / RNA polymerase III RPC4 / DNA-directed RNA polymerase III, subunit Rpc31 / DNA-directed RNA polymerase III subunit Rpc31 / Pol III subunit C11, C-terminal zinc ribbon / DNA-directed RNA polymerase III subunit Rpc5 / DNA-directed RNA polymerase III subunit RPC1, N-terminal / DNA-directed RNA polymerase III subunit RPC1, C-terminal / RPC5 protein / RNA polymerase III, subunit Rpc25 / DNA-directed RNA polymerase III subunit RPC9 / RNA polymerase III subunit Rpc25 / RNA polymerase Rpc34 / RNA polymerase III Rpc82, C -terminal / RNA polymerase Rpc34-like / DNA-directed RNA polymerase III subunit RPC3 / RNA polymerase Rpc34 subunit / RNA polymerase III subunit RPC82 / DNA-directed RNA polymerase III subunit RPC3, helical hairpin domain / POLR3C, C-terminal winged-helix domain / RNA polymerase III subunit RPC82-related, helix-turn-helix / RNA polymerase III subunit RPC82 helix-turn-helix domain / DNA-directed RNA polymerase, subunit E/RPC8 / DNA-directed RNA polymerases I and III subunit AC19 / DNA-directed RNA polymerases I and III subunit AC40 / RNA polymerase Rpb4/RPC9, core / DNA-directed RNA-polymerase II subunit / 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 4 / RNA polymerase Rpb2, domain 4 / RNA polymerase Rpb2, domain 5 / RNA polymerase Rpb2, domain 5 / DNA-directed RNA polymerase, M/15kDa subunit / RNA polymerases M/15 Kd subunit / RNA polymerase subunit 9 / 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 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. / Zinc finger, TFIIS-type / DNA-directed RNA polymerase subunit Rpo5/Rpb5 / 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 / RNA polymerase subunit RPABC4/transcription elongation factor Spt4 / 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. / RNA polymerase Rpb6 / RNA polymerase, subunit omega/Rpo6/RPB6 / RNA polymerase Rpb6 / RNA polymerase Rpb1, domain 3 superfamily / RPB6/omega subunit-like superfamily / RNA polymerase Rpb1, clamp domain superfamily / RNA polymerase Rpb1, domain 3 / RNA polymerase Rpb1, domain 3 / DNA-directed RNA polymerase, subunit beta-prime / RNA polymerase Rpb1, domain 1 / RNA polymerase Rpb1, domain 1 / RNA polymerase, alpha subunit / RNA polymerase Rpb1, domain 5
Similarity search - Domain/homology
IRON/SULFUR CLUSTER / DNA-directed RNA polymerase III subunit RPC1 / DNA-directed RNA polymerases I and III subunit RPAC1 / DNA-directed RNA polymerase III subunit RPC7 / DNA-directed RNA polymerase III subunit RPC9 / DNA-directed RNA polymerase III subunit RPC4 / DNA-directed RNA polymerases I and III subunit RPAC2 / DNA-directed RNA polymerases I, II, and III subunit RPABC1 / DNA-directed RNA polymerases I, II, and III subunit RPABC3 / DNA-directed RNA polymerases I, II, and III subunit RPABC4 ...IRON/SULFUR CLUSTER / DNA-directed RNA polymerase III subunit RPC1 / DNA-directed RNA polymerases I and III subunit RPAC1 / DNA-directed RNA polymerase III subunit RPC7 / DNA-directed RNA polymerase III subunit RPC9 / DNA-directed RNA polymerase III subunit RPC4 / DNA-directed RNA polymerases I and III subunit RPAC2 / DNA-directed RNA polymerases I, II, and III subunit RPABC1 / DNA-directed RNA polymerases I, II, and III subunit RPABC3 / DNA-directed RNA polymerases I, II, and III subunit RPABC4 / DNA-directed RNA polymerases I, II, and III subunit RPABC2 / DNA-directed RNA polymerases I, II, and III subunit RPABC5 / DNA-directed RNA polymerase III subunit RPC3 / DNA-directed RNA polymerase III subunit RPC6 / DNA-directed RNA polymerase III subunit RPC5 / DNA-directed RNA polymerase III subunit RPC2 / DNA-directed RNA polymerase III subunit RPC10 / DNA-directed RNA polymerase III subunit RPC8
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.1 Å
AuthorsWang, Q. / Wan, F. / Lan, P. / Wu, J. / Lei, M.
CitationJournal: Nat Struct Mol Biol / Year: 2021
Title: Structural insights into transcriptional regulation of human RNA polymerase III.
Authors: Qianmin Wang / Shaobai Li / Futang Wan / Youwei Xu / Zhenfang Wu / Mi Cao / Pengfei Lan / Ming Lei / Jian Wu /
Abstract: RNA polymerase III (Pol III) synthesizes structured, essential small RNAs, such as transfer RNA, 5S ribosomal RNA and U6 small nuclear RNA. Pol III, the largest nuclear RNA polymerase, is composed of ...RNA polymerase III (Pol III) synthesizes structured, essential small RNAs, such as transfer RNA, 5S ribosomal RNA and U6 small nuclear RNA. Pol III, the largest nuclear RNA polymerase, is composed of a conserved core region and eight constitutive regulatory subunits, but how these factors jointly regulate Pol III transcription remains unclear. Here, we present cryo-EM structures of human Pol III in both apo and elongating states, which unveil both an orchestrated movement during the apo-to-elongating transition and an unexpected apo state in which the RPC7 subunit tail occupies the DNA-RNA-binding cleft of Pol III, suggesting that RPC7 plays important roles in both autoinhibition and transcription initiation. The structures also reveal a proofreading mechanism for the TFIIS-like subunit RPC10, which stably retains its catalytic position in the secondary channel, explaining the high fidelity of Pol III transcription. Our work provides an integrated picture of the mechanism of Pol III transcription regulation.
History
DepositionSep 25, 2020Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Feb 17, 2021Provider: repository / Type: Initial release
Revision 1.1Feb 24, 2021Group: Database references / Category: citation
Item: _citation.journal_volume / _citation.page_first ..._citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_PubMed
Revision 1.2Mar 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: DNA-directed RNA polymerase III subunit RPC1
B: DNA-directed RNA polymerase III subunit RPC2
C: DNA-directed RNA polymerases I and III subunit RPAC1
D: DNA-directed RNA polymerase III subunit RPC9
E: DNA-directed RNA polymerases I, II, and III subunit RPABC1
F: DNA-directed RNA polymerases I, II, and III subunit RPABC2
G: DNA-directed RNA polymerase III subunit RPC8
H: DNA-directed RNA polymerases I, II, and III subunit RPABC3
I: DNA-directed RNA polymerase III subunit RPC10
J: DNA-directed RNA polymerases I, II, and III subunit RPABC5
K: DNA-directed RNA polymerases I and III subunit RPAC2
L: DNA-directed RNA polymerases I, II, and III subunit RPABC4
M: DNA-directed RNA polymerase III subunit RPC5
N: DNA-directed RNA polymerase III subunit RPC4
O: DNA-directed RNA polymerase III subunit RPC3
P: DNA-directed RNA polymerase III subunit RPC6
Q: DNA-directed RNA polymerase III subunit RPC7
hetero molecules


Theoretical massNumber of molelcules
Total (without water)709,13125
Polymers708,32217
Non-polymers8108
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: microscopy
TypeNameSymmetry operationNumber
identity operation1_5551
Buried area99060 Å2
ΔGint-623 kcal/mol
Surface area227670 Å2

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Components

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DNA-directed RNA polymerase III subunit ... , 10 types, 10 molecules ABDGIMNOPQ

#1: Protein DNA-directed RNA polymerase III subunit RPC1 / RNA polymerase III subunit C1 / DNA-directed RNA polymerase III largest subunit / DNA-directed RNA ...RNA polymerase III subunit C1 / DNA-directed RNA polymerase III largest subunit / DNA-directed RNA polymerase III subunit A / RNA polymerase III 155 kDa subunit / RPC155 / RNA polymerase III subunit C160


Mass: 155860.125 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O14802, DNA-directed RNA polymerase
#2: Protein DNA-directed RNA polymerase III subunit RPC2 / RNA polymerase III subunit C2 / C128 / DNA-directed RNA polymerase III 127.6 kDa polypeptide / DNA- ...RNA polymerase III subunit C2 / C128 / DNA-directed RNA polymerase III 127.6 kDa polypeptide / DNA-directed RNA polymerase III subunit B


Mass: 127953.891 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9NW08, DNA-directed RNA polymerase
#4: Protein DNA-directed RNA polymerase III subunit RPC9 / RNA polymerase III subunit C9 / Calcitonin gene-related peptide-receptor component protein / HsC17


Mass: 16893.990 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O75575
#7: Protein DNA-directed RNA polymerase III subunit RPC8 / RNA polymerase III subunit C8 / DNA-directed RNA polymerase III subunit H / RNA polymerase III ...RNA polymerase III subunit C8 / DNA-directed RNA polymerase III subunit H / RNA polymerase III subunit 22.9 kDa subunit / RPC22.9


Mass: 22938.846 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9Y535
#9: Protein DNA-directed RNA polymerase III subunit RPC10 / RNA polymerase III subunit C10 / DNA-directed RNA polymerase III subunit K / RNA polymerase III 12. ...RNA polymerase III subunit C10 / DNA-directed RNA polymerase III subunit K / RNA polymerase III 12.5 kDa subunit / RPC12.5 / RNA polymerase III subunit C11 / hRPC11


Mass: 12354.104 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9Y2Y1
#13: Protein DNA-directed RNA polymerase III subunit RPC5 / RNA polymerase III subunit C5 / DNA-directed RNA polymerase III 80 kDa polypeptide


Mass: 80004.031 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9NVU0
#14: Protein DNA-directed RNA polymerase III subunit RPC4 / RNA polymerase III subunit C4 / DNA-directed RNA polymerase III subunit D / Protein BN51 / RNA ...RNA polymerase III subunit C4 / DNA-directed RNA polymerase III subunit D / Protein BN51 / RNA polymerase III 47 kDa subunit / RPC53 homolog


Mass: 44471.875 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P05423
#15: Protein DNA-directed RNA polymerase III subunit RPC3 / RNA polymerase III subunit C3 / DNA-directed RNA polymerase III subunit C / RNA polymerase III 62 ...RNA polymerase III subunit C3 / DNA-directed RNA polymerase III subunit C / RNA polymerase III 62 kDa subunit / RPC62


Mass: 60692.555 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9BUI4
#16: Protein DNA-directed RNA polymerase III subunit RPC6 / RNA polymerase III subunit C6 / DNA-directed RNA polymerase III subunit F / RNA polymerase III 39 ...RNA polymerase III subunit C6 / DNA-directed RNA polymerase III subunit F / RNA polymerase III 39 kDa subunit / RPC39


Mass: 35726.914 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: Q9H1D9
#17: Protein DNA-directed RNA polymerase III subunit RPC7 / RNA polymerase III subunit C7 / DNA-directed RNA polymerase III subunit G / RNA polymerase III 32 ...RNA polymerase III subunit C7 / DNA-directed RNA polymerase III subunit G / RNA polymerase III 32 kDa apha subunit / RPC32-alpha / RNA polymerase III 32 kDa subunit / RPC32


Mass: 25953.510 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O15318

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DNA-directed RNA polymerases I and III subunit ... , 2 types, 2 molecules CK

#3: Protein DNA-directed RNA polymerases I and III subunit RPAC1 / RNA polymerases I and III subunit AC1 / AC40 / DNA-directed RNA polymerases I and III 40 kDa ...RNA polymerases I and III subunit AC1 / AC40 / DNA-directed RNA polymerases I and III 40 kDa polypeptide / RPA40 / RPA39 / RPC40


Mass: 39301.672 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: O15160
#11: Protein DNA-directed RNA polymerases I and III subunit RPAC2 / RNA polymerases I and III subunit AC2 / AC19 / DNA-directed RNA polymerase I subunit D / RNA ...RNA polymerases I and III subunit AC2 / AC19 / DNA-directed RNA polymerase I subunit D / RNA polymerase I 16 kDa subunit / RPA16 / RPC16 / hRPA19


Mass: 15259.222 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P0DPB6

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

#5: Protein DNA-directed RNA polymerases I, II, and III subunit RPABC1 / RNA polymerases I / II / and III subunit ABC1 / DNA-directed RNA polymerase II 23 kDa polypeptide / ...RNA polymerases I / II / and III subunit ABC1 / DNA-directed RNA polymerase II 23 kDa polypeptide / DNA-directed RNA polymerase II subunit E / RPB5 homolog / XAP4


Mass: 24584.223 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P19388
#6: Protein DNA-directed RNA polymerases I, II, and III subunit RPABC2 / RNA polymerases I / II / and III subunit ABC2 / DNA-directed RNA polymerase II subunit F / DNA- ...RNA polymerases I / II / and III subunit ABC2 / DNA-directed RNA polymerase II subunit F / DNA-directed RNA polymerases I / and III 14.4 kDa polypeptide / RPABC14.4 / RPB14.4 / RPB6 homolog / RPC15


Mass: 14491.026 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P61218
#8: Protein DNA-directed RNA polymerases I, II, and III subunit RPABC3 / RNA polymerases I / II / and III subunit ABC3 / DNA-directed RNA polymerase II subunit H / DNA- ...RNA polymerases I / II / and III subunit ABC3 / DNA-directed RNA polymerase II subunit H / DNA-directed RNA polymerases I / and III 17.1 kDa polypeptide / RPB17 / RPB8 homolog / hRPB8


Mass: 17162.273 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P52434
#10: Protein DNA-directed RNA polymerases I, II, and III subunit RPABC5


Mass: 7655.123 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P62875*PLUS
#12: Protein DNA-directed RNA polymerases I, II, and III subunit RPABC4 / RNA polymerases I / II / and III subunit ABC4 / ABC10-alpha / DNA-directed RNA polymerase II ...RNA polymerases I / II / and III subunit ABC4 / ABC10-alpha / DNA-directed RNA polymerase II subunit K / RNA polymerase II 7.0 kDa subunit / RPB7.0 / RPB10alpha


Mass: 7018.244 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P53803

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Non-polymers , 2 types, 8 molecules

#18: Chemical
ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 7 / Source method: obtained synthetically / Formula: Zn
#19: Chemical ChemComp-SF4 / IRON/SULFUR CLUSTER


Mass: 351.640 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Fe4S4

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Details

Has ligand of interestN

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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 Pol3 Apo / Type: COMPLEX / Entity ID: #1-#17 / Source: NATURAL
Source (natural)Organism: Homo sapiens (human)
Buffer solutionpH: 8
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 K3 (6k x 4k)

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Processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3.1 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 264514 / Symmetry type: POINT

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