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- PDB-7ast: Apo Human RNA Polymerase III -

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Entry
Database: PDB / ID: 7ast
TitleApo Human RNA Polymerase III
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 / tRNA
Function / homology
Function and homology information


snRNA transcription by RNA polymerase III / RNA Polymerase III Chain Elongation / RNA Polymerase III Transcription Termination / DNA/RNA hybrid binding / calcitonin gene-related peptide receptor activity / regulation of transcription by RNA polymerase III / regulation of transcription by RNA polymerase I / RPAP3/R2TP/prefoldin-like complex / DNA polymerase III complex / RNA Polymerase III Transcription Initiation From Type 1 Promoter ...snRNA transcription by RNA polymerase III / RNA Polymerase III Chain Elongation / RNA Polymerase III Transcription Termination / DNA/RNA hybrid binding / calcitonin gene-related peptide receptor activity / regulation of transcription by RNA polymerase III / regulation of transcription by RNA polymerase I / RPAP3/R2TP/prefoldin-like complex / DNA polymerase III complex / 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 / Cytosolic sensors of pathogen-associated DNA / positive regulation of innate immune response / nucleobase-containing compound metabolic process / Abortive elongation of HIV-1 transcript in the absence of Tat / FGFR2 alternative splicing / RNA Polymerase I Transcription Termination / MicroRNA (miRNA) biogenesis / Viral Messenger RNA Synthesis / Signaling by FGFR2 IIIa TM / RNA Pol II CTD phosphorylation and interaction with CE during HIV infection / RNA Pol II CTD phosphorylation and interaction with CE / 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 / Formation of the Early Elongation Complex / Formation of the HIV-1 Early Elongation Complex / mRNA Capping / transcription initiation at RNA polymerase III promoter / mRNA Splicing - Minor Pathway / PIWI-interacting RNA (piRNA) biogenesis / Processing of Capped Intron-Containing Pre-mRNA / RNA Polymerase I Transcription Initiation / transcription by RNA polymerase III / Pausing and recovery of Tat-mediated HIV elongation / Tat-mediated HIV elongation arrest and recovery / RNA polymerase II transcribes snRNA genes / HIV elongation arrest and recovery / Pausing and recovery of HIV elongation / neuropeptide signaling pathway / Tat-mediated elongation of the HIV-1 transcript / Formation of HIV-1 elongation complex containing HIV-1 Tat / RNA polymerase I complex / transcription elongation by RNA polymerase I / RNA polymerase III complex / Formation of HIV elongation complex in the absence of HIV Tat / RNA polymerase II, core complex / tRNA transcription by RNA polymerase III / transcription by RNA polymerase I / RNA Polymerase II Transcription Elongation / Formation of RNA Pol II elongation complex / RNA Polymerase II Pre-transcription Events / acrosomal vesicle / mRNA Splicing - Major Pathway / Inhibition of DNA recombination at telomere / positive regulation of interferon-beta production / TP53 Regulates Transcription of DNA Repair Genes / RNA Polymerase I Promoter Escape / Transcriptional regulation by small RNAs / protein-DNA complex / 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 / Activation of anterior HOX genes in hindbrain development during early embryogenesis / fibrillar center / DNA-directed RNA polymerase / Dual incision in TC-NER / Gap-filling DNA repair synthesis and ligation in TC-NER / DNA-directed RNA polymerase activity / single-stranded DNA binding / 4 iron, 4 sulfur cluster binding / double-stranded DNA binding / defense response to virus / Estrogen-dependent gene expression / nucleic acid binding / transcription by RNA polymerase II / protein dimerization activity / protein stabilization / innate immune response / nucleotide binding / intracellular membrane-bounded organelle / DNA-templated transcription / centrosome / chromatin binding / magnesium ion binding / mitochondrion / DNA binding / zinc ion binding / nucleoplasm / nucleus / membrane / plasma membrane
Similarity search - Function
DNA-directed RNA polymerase III subunit RPC5, C-terminal / DNA-directed RNA polymerase III subunit RPC5 C-terminal / RNA polymerase Rpb7-like, N-terminal domain / DNA-directed RNA polymerase III subunit RPC4 / RNA polymerase III RPC4 / 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 / RNA polymerase Rpb7-like, N-terminal domain / DNA-directed RNA polymerase III subunit RPC4 / RNA polymerase III RPC4 / 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. / 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 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. / 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. / Dna Ligase; domain 1 / Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain / RNA polymerase Rpb6 / RNA polymerase, subunit omega/Rpo6/RPB6 / RNA polymerase Rpb6 / RNA polymerase Rpb1, domain 3 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
Similarity search - Domain/homology
DNA-directed RNA polymerase III subunit RPC1 / DNA-directed RNA polymerases I and III subunit RPAC1 / 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 RPC1 / DNA-directed RNA polymerases I and III subunit RPAC1 / 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: 4 Å
AuthorsRamsay, E.P. / Abascal-Palacios, G. / Daiss, J.L. / King, H. / Gouge, J. / Pilsl, M. / Beuron, F. / Morris, E. / Gunkel, P. / Engel, C. / Vannini, A.
Funding support United Kingdom, Germany, 3items
OrganizationGrant numberCountry
Wellcome Trust200818/Z/16/Z United Kingdom
Cancer Research UKCR-UK C47547/A21536 United Kingdom
German Research Foundation (DFG)EN 1204/1-1 Germany
CitationJournal: Nat Commun / Year: 2020
Title: Structure of human RNA polymerase III.
Authors: Ewan Phillip Ramsay / Guillermo Abascal-Palacios / Julia L Daiß / Helen King / Jerome Gouge / Michael Pilsl / Fabienne Beuron / Edward Morris / Philip Gunkel / Christoph Engel / Alessandro Vannini /
Abstract: In eukaryotes, RNA Polymerase (Pol) III is specialized for the transcription of tRNAs and other short, untranslated RNAs. Pol III is a determinant of cellular growth and lifespan across eukaryotes. ...In eukaryotes, RNA Polymerase (Pol) III is specialized for the transcription of tRNAs and other short, untranslated RNAs. Pol III is a determinant of cellular growth and lifespan across eukaryotes. Upregulation of Pol III transcription is observed in cancer and causative Pol III mutations have been described in neurodevelopmental disorders and hypersensitivity to viral infection. Here, we report a cryo-EM reconstruction at 4.0 Å of human Pol III, allowing mapping and rationalization of reported genetic mutations. Mutations causing neurodevelopmental defects cluster in hotspots affecting Pol III stability and/or biogenesis, whereas mutations affecting viral sensing are located in proximity to DNA binding regions, suggesting an impairment of Pol III cytosolic viral DNA-sensing. Integrating x-ray crystallography and SAXS, we also describe the structure of the higher eukaryote specific RPC5 C-terminal extension. Surprisingly, experiments in living cells highlight a role for this module in the assembly and stability of human Pol III.
History
DepositionOct 28, 2020Deposition site: PDBE / Processing site: PDBE
Revision 1.0Dec 23, 2020Provider: repository / Type: Initial release
Revision 1.1Dec 30, 2020Group: Database references / Category: citation
Item: _citation.page_first / _citation.page_last ..._citation.page_first / _citation.page_last / _citation.pdbx_database_id_PubMed / _citation.title
Revision 1.2Nov 6, 2024Group: Data collection / Database references / Structure summary
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / em_admin / pdbx_entry_details / pdbx_modification_feature
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession / _em_admin.last_update

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Assembly

Deposited unit
N: DNA-directed RNA polymerase III subunit RPC1
A: DNA-directed RNA polymerase III subunit RPC10
B: DNA-directed RNA polymerases I, II, and III subunit RPABC5
C: DNA-directed RNA polymerases I, II, and III subunit RPABC4
D: DNA-directed RNA polymerases I, II, and III subunit RPABC3
E: DNA-directed RNA polymerases I, II, and III subunit RPABC2
F: DNA-directed RNA polymerases I, II, and III subunit RPABC1
G: DNA-directed RNA polymerases I and III subunit RPAC2
H: DNA-directed RNA polymerases I and III subunit RPAC1
I: DNA-directed RNA polymerase III subunit RPC9
J: DNA-directed RNA polymerase III subunit RPC8
K: DNA-directed RNA polymerase III subunit RPC5
L: DNA-directed RNA polymerase III subunit RPC4
M: DNA-directed RNA polymerase III subunit RPC2
Z: DNA-directed RNA polymerase III subunit RPC6
X: DNA-directed RNA polymerase III subunit RPC3
Y: DNA-directed RNA polymerase III subunit RPC7-beta


Theoretical massNumber of molelcules
Total (without water)685,45017
Polymers685,45017
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: The complex purified as a complete assembly from an ion exchange chromatography experiment.
TypeNameSymmetry operationNumber
identity operation1_5551
Buried area69070 Å2
ΔGint-394 kcal/mol
Surface area182780 Å2
MethodPISA

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Components

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

#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) / Cell line: HeLa / References: UniProt: O14802, DNA-directed RNA polymerase
#2: 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) / Cell line: HeLa / References: UniProt: Q9Y2Y1
#10: 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) / Cell line: HeLa / References: UniProt: O75575
#11: 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) / Cell line: HeLa / References: UniProt: Q9Y535
#12: 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) / Cell line: HeLa / References: UniProt: Q9NVU0
#13: 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) / Cell line: HeLa / References: UniProt: P05423
#14: 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) / Cell line: HeLa / References: UniProt: Q9NW08, DNA-directed RNA polymerase
#15: 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) / Cell line: HeLa / References: UniProt: Q9H1D9
#16: 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) / Cell line: HeLa / References: UniProt: Q9BUI4
#17: Protein/peptide DNA-directed RNA polymerase III subunit RPC7-beta


Mass: 3081.790 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / Cell line: HeLa

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

#3: Protein DNA-directed RNA polymerases I, II, and III subunit RPABC5 / RNA polymerases I / II / and III subunit ABC5 / DNA-directed RNA polymerase III subunit L / RNA ...RNA polymerases I / II / and III subunit ABC5 / DNA-directed RNA polymerase III subunit L / RNA polymerase II 7.6 kDa subunit / RPB7.6 / RPB10 homolog


Mass: 7655.123 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / Cell line: HeLa / References: UniProt: P62875
#4: 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) / Cell line: HeLa / References: UniProt: P53803
#5: 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) / Cell line: HeLa / References: UniProt: P52434
#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) / Cell line: HeLa / References: UniProt: P61218
#7: 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) / Cell line: HeLa / References: UniProt: P19388

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

#8: 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) / Cell line: HeLa / References: UniProt: P0DPB6
#9: 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) / Cell line: HeLa / References: UniProt: O15160

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Details

Has protein modificationY

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: Human RNA Polymerase III / Type: COMPLEX
Details: The human RNA polymerase III complex purified from HeLa cells.
Entity ID: all / Source: NATURAL
Molecular weightExperimental value: NO
Source (natural)Organism: Homo sapiens (human) / Cellular location: Nucleus and cytoplasm
Buffer solutionpH: 8
Buffer component
IDConc.NameFormulaBuffer-ID
150 mMTris-HCl1
21 mMMagnesium ChlorideMgCl21
310 uMZinc ChlorideZnCl21
410 mM2-mercaptoethanolC2H6OS1
5110 mMAmmonium Sulfate(NH4)2SO41
SpecimenConc.: 0.06 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Details: The sample was monodisperse with well-defined complex particles.
Specimen supportGrid material: COPPER / Grid mesh size: 400 divisions/in. / Grid type: C-flat-1.2/1.3
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 291 K

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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: SPOT SCAN
Electron lensMode: BRIGHT FIELD / Nominal magnification: 75000 X / Cs: 2.7 mm / C2 aperture diameter: 70 µm
Specimen holderSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingAverage exposure time: 70 sec. / Electron dose: 40.8 e/Å2 / Detector mode: COUNTING / Film or detector model: FEI FALCON III (4k x 4k)

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Processing

SoftwareName: PHENIX / Version: 1.18.1_3865: / Classification: refinement
EM software
IDNameVersionCategory
4CTFFIND4.1.5CTF correction
7UCSF Chimera1.13.1model fitting
8Coot0.8.9.2model fitting
10cryoSPARC2initial Euler assignment
11RELION3.1final Euler assignment
12RELION3.1classification
13RELION3.13D reconstruction
14PHENIX1.18.1-3865model refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionResolution: 4 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 25369 / Symmetry type: POINT
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.01635241
ELECTRON MICROSCOPYf_angle_d1.05447576
ELECTRON MICROSCOPYf_dihedral_angle_d15.3564781
ELECTRON MICROSCOPYf_chiral_restr0.0555413
ELECTRON MICROSCOPYf_plane_restr0.0076121

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