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- PDB-9rtt: Activated Elongation Complex with IWS1 and ELOF1 -

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Entry
Database: PDB / ID: 9rtt
TitleActivated Elongation Complex with IWS1 and ELOF1
Components
  • (DNA-directed RNA polymerase ...) x 7
  • (DNA-directed RNA polymerases I, II, and III subunit ...) x 3
  • (RNA polymerase II subunit ...) x 2
  • (RNA polymerase-associated protein ...) x 2
  • (Transcription elongation factor ...) x 4
  • Non-template DNA
  • Parafibromin
  • Protein IWS1 homolog
  • RNA
  • RNA polymerase II-associated factor 1 homolog
  • Superkiller complex protein 8
  • Template DNA
KeywordsTRANSCRIPTION / RNA Pol II / Elongation
Function / homology
Function and homology information


blastocyst growth / Ski complex / RNA polymerase II C-terminal domain phosphoserine binding / mRNA decay by 3' to 5' exoribonuclease / Cdc73/Paf1 complex / regulation of mRNA export from nucleus / inner cell mass cell differentiation / positive regulation of mRNA 3'-end processing / regulation of isotype switching / nuclear-transcribed mRNA catabolic process, 3'-5' exonucleolytic nonsense-mediated decay ...blastocyst growth / Ski complex / RNA polymerase II C-terminal domain phosphoserine binding / mRNA decay by 3' to 5' exoribonuclease / Cdc73/Paf1 complex / regulation of mRNA export from nucleus / inner cell mass cell differentiation / positive regulation of mRNA 3'-end processing / regulation of isotype switching / nuclear-transcribed mRNA catabolic process, 3'-5' exonucleolytic nonsense-mediated decay / negative regulation of DNA-templated transcription, elongation / regulation of muscle cell differentiation / endodermal cell fate commitment / negative regulation of myeloid cell differentiation / positive regulation of cell cycle G1/S phase transition / DSIF complex / regulation of mRNA processing / trophectodermal cell differentiation / regulation of transcription elongation by RNA polymerase II / blastocyst hatching / nucleosome organization / 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 / blastocyst formation / mRNA 3'-end processing / nuclear lumen / positive regulation of DNA-templated transcription, elongation / Abortive elongation of HIV-1 transcript in the absence of Tat / poly(A)+ mRNA export from nucleus / stem cell population maintenance / interleukin-6-mediated signaling pathway / negative regulation of G1/S transition of mitotic cell cycle / negative regulation of gene expression, epigenetic / RNA Pol II CTD phosphorylation and interaction with CE during HIV infection / RNA Pol II CTD phosphorylation and interaction with CE / transcription elongation-coupled chromatin remodeling / Formation of the Early Elongation Complex / Formation of the HIV-1 Early Elongation Complex / mRNA Capping / RNA polymerase II complex binding / maintenance of transcriptional fidelity during transcription elongation by RNA polymerase II / Pausing and recovery of Tat-mediated HIV elongation / Tat-mediated HIV elongation arrest and recovery / negative regulation of transcription elongation by RNA polymerase II / positive regulation of macroautophagy / RNA polymerase II transcribes snRNA genes / HIV elongation arrest and recovery / Pausing and recovery of HIV elongation / protein localization to nucleus / positive regulation of Wnt signaling pathway / cell surface receptor signaling pathway via JAK-STAT / mRNA transport / 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 / negative regulation of fibroblast proliferation / Formation of HIV elongation complex in the absence of HIV Tat / RNA polymerase II, core complex / tRNA transcription by RNA polymerase III / nucleosome binding / RNA Polymerase II Transcription Elongation / Formation of RNA Pol II elongation complex / translation initiation factor binding / transcription-coupled nucleotide-excision repair / RNA Polymerase II Pre-transcription Events / rescue of stalled ribosome / SH2 domain binding / DNA-directed RNA polymerase complex / RNA splicing / transcription elongation factor complex / TP53 Regulates Transcription of DNA Repair Genes / transcription initiation at RNA polymerase II promoter / transcription elongation by RNA polymerase II / regulation of cell growth / DNA-templated transcription initiation / positive regulation of transcription elongation by RNA polymerase II / Hedgehog 'on' state / euchromatin / Formation of the beta-catenin:TCF transactivating complex
Similarity search - Function
Paf1 complex subunit Cdc73, N-terminal domain / Paf1 complex subunit CDC73 N-terminal / : / Leo1-like protein / Leo1-like protein / HHH domain 9 / HHH domain / RNA polymerase II associated factor Paf1 / Paf1 / Cdc73/Parafibromin ...Paf1 complex subunit Cdc73, N-terminal domain / Paf1 complex subunit CDC73 N-terminal / : / Leo1-like protein / Leo1-like protein / HHH domain 9 / HHH domain / RNA polymerase II associated factor Paf1 / Paf1 / Cdc73/Parafibromin / RNA polymerase-associated protein Ctr9 / Cell division control protein 73, C-terminal / Cell division control protein 73, C-terminal domain superfamily / RNA pol II accessory factor, Cdc73 family, C-terminal / Transcription elongation factor 1 / Transcription elongation factor 1 superfamily / Transcription elongation factor Elf1 like / : / YqgF/RNase H-like domain / Likely ribonuclease with RNase H fold. / Spt6 acidic, N-terminal domain / Helix-turn-helix DNA-binding domain of Spt6 / Transcription elongation factor Spt6, YqgF domain / Transcription elongation factor Spt6, helix-hairpin-helix motif / Spt6, SH2 domain, C terminus / Acidic N-terminal SPT6 / Helix-hairpin-helix motif / Holliday-junction resolvase-like of SPT6 / Helix-turn-helix DNA-binding domain of SPT6 / Tex-like protein, HTH domain superfamily / Tex-like domain superfamily / Spt6, Death-like domain / : / Tex central region-like / Transcription elongation factor Spt6 / Spt6, SH2 domain, N terminus / Spt6, SH2 domain / SH2 domain / YqgF/RNase H-like domain superfamily / Spt5, KOW domain repeat 6 / Transcription elongation factor SPT5, seventh KOW domain / Transcription elongation factor SPT5, sixth KOW domain / Tetratricopeptide repeat / Transcription initiation Spt4 / Spt4 superfamily / TFIIS N-terminal domain profile. / Transcription factor IIS, N-terminal / TFIIS helical bundle-like domain / Spt4/RpoE2 zinc finger / Spt4/RpoE2 zinc finger / Spt4/RpoE2 zinc finger / Transcription elongation factor SPT5, second KOW domain / Transcription elongation factor SPT5, fifth KOW domain / Transcription elongation factor SPT5, KOWx domain / Transcription elongation factor SPT5, KOW1 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 / Tetratricopeptide repeat / RuvA domain 2-like / TFIIS/LEDGF domain superfamily / 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 / Tetratricopeptide repeat / 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 / S1 domain profile. / 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
Similarity search - Domain/homology
DNA / DNA (> 10) / DNA (> 100) / RNA / RNA (> 10) / DNA-directed RNA polymerase II subunit RPB4 / DNA-directed RNA polymerase subunit / DNA-directed RNA polymerases I, II, and III subunit RPABC5 / DNA-directed RNA polymerases I, II, and III subunit RPABC4 / DNA-directed RNA polymerase subunit ...DNA / DNA (> 10) / DNA (> 100) / RNA / RNA (> 10) / DNA-directed RNA polymerase II subunit RPB4 / DNA-directed RNA polymerase subunit / DNA-directed RNA polymerases I, II, and III subunit RPABC5 / DNA-directed RNA polymerases I, II, and III subunit RPABC4 / DNA-directed RNA polymerase subunit / DNA-directed RNA polymerases I, II, and III subunit RPABC2 / DNA-directed RNA polymerase II subunit RPB11-a / DNA-directed RNA polymerases I, II, and III subunit RPABC3 / DNA-directed RNA polymerase II subunit RPB3 / DNA-directed RNA polymerase subunit beta / DNA-directed RNA polymerases I, II, and III subunit RPABC1 / Transcription elongation factor SPT5 / Transcription elongation factor 1 homolog / DNA-directed RNA polymerase II subunit RPB9 / Transcription elongation factor SPT4 / Parafibromin / RNA polymerase-associated protein CTR9 homolog / Transcription elongation factor SPT6 / RNA polymerase II-associated factor 1 homolog / RNA polymerase-associated protein LEO1 / Protein IWS1 homolog / Superkiller complex protein 8
Similarity search - Component
Biological speciesHomo sapiens (human)
Sus scrofa (pig)
synthetic construct (others)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4.01 Å
AuthorsWalshe, J.L. / Cramer, P.
Funding support Germany, 1items
OrganizationGrant numberCountry
Max Planck Society Germany
CitationJournal: Nat Commun / Year: 2025
Title: IWS1 positions downstream DNA to globally stimulate Pol II elongation.
Authors: Aiturgan Zheenbekova / James L Walshe / Moritz Ochmann / Moritz Bäuerle / Ute Neef / Kerstin C Maier / Petra Rus / Yumeng Yan / Henning Urlaub / Patrick Cramer / Kristina Žumer /
Abstract: The protein IWS1 (Interacts with SPT6 1) is implicated in transcription-associated processes, but a direct role in RNA polymerase (Pol) II function is unknown. Here, we use multi-omics kinetic ...The protein IWS1 (Interacts with SPT6 1) is implicated in transcription-associated processes, but a direct role in RNA polymerase (Pol) II function is unknown. Here, we use multi-omics kinetic analysis after rapid depletion of IWS1 in human cells to show that loss of IWS1 results in a global decrease of RNA synthesis and a global reduction in Pol II elongation velocity. We then resolve the cryo-EM structure of the activated Pol II elongation complex with bound IWS1 and elongation factor ELOF1 and show that IWS1 acts as a scaffold and positions downstream DNA within the cleft of Pol II. In vitro assays show that the disordered C-terminal region of IWS1 that contacts the cleft of Pol II is responsible for stimulation of Pol II activity and is aided by ELOF1. Finally, we find that the defect in transcription upon IWS1 depletion leads to a decrease of histone H3 tri-methylation at residue lysine-36 (H3K36me3), but that this secondary effect is an indirect function of IWS1. In summary, our structure-function analysis establishes IWS1 as a Pol II-associated elongation factor that acts globally to stimulate Pol II elongation velocity and ensure proper co-transcriptional histone methylation.
History
DepositionJul 3, 2025Deposition site: PDBE / Processing site: PDBE
Revision 1.0Sep 3, 2025Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
D: RNA polymerase II subunit D
E: DNA-directed RNA polymerase II subunit E
F: DNA-directed RNA polymerases I, II, and III subunit RPABC2
G: DNA-directed RNA polymerase II subunit RPB7
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-a
L: RNA polymerase II subunit K
P: RNA
Q: RNA polymerase-associated protein CTR9 homolog
T: Template DNA
W: Superkiller complex protein 8
Y: Transcription elongation factor SPT4
b: Transcription elongation factor 1 homolog
A: DNA-directed RNA polymerase subunit
B: DNA-directed RNA polymerase subunit beta
C: DNA-directed RNA polymerase II subunit RPB3
M: Transcription elongation factor SPT6
N: Non-template DNA
U: RNA polymerase-associated protein LEO1
V: RNA polymerase II-associated factor 1 homolog
X: Parafibromin
Z: Transcription elongation factor SPT5
a: Protein IWS1 homolog
hetero molecules


Theoretical massNumber of molelcules
Total (without water)1,480,96835
Polymers1,480,35525
Non-polymers61310
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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RNA polymerase II subunit ... , 2 types, 2 molecules DL

#1: Protein RNA polymerase II subunit D


Mass: 16331.255 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Sus scrofa (pig) / References: UniProt: A0A287ADR4
#9: Protein RNA polymerase II subunit K


Mass: 7018.244 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Sus scrofa (pig) / References: UniProt: A0A8D0JYF1

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DNA-directed RNA polymerase ... , 7 types, 7 molecules EGIKABC

#2: 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: I3LSI7
#4: 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
#6: 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
#8: Protein DNA-directed RNA polymerase II subunit RPB11-a


Mass: 13310.284 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Sus scrofa (pig) / References: UniProt: F1RKE4
#16: Protein DNA-directed RNA polymerase subunit


Mass: 217610.031 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Sus scrofa (pig)
References: UniProt: A0A8D1DPV6, DNA-directed RNA polymerase
#17: 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: I3LGP4, DNA-directed RNA polymerase
#18: Protein DNA-directed RNA polymerase II subunit RPB3


Mass: 31439.074 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Sus scrofa (pig) / References: UniProt: I3LCH3

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DNA-directed RNA polymerases I, II, and III subunit ... , 3 types, 3 molecules FHJ

#3: Protein DNA-directed RNA polymerases I, II, and III subunit RPABC2


Mass: 14477.001 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Sus scrofa (pig) / References: UniProt: A0A8D1KNW4
#5: 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: I3LCB2
#7: 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) Sus scrofa (pig) / References: UniProt: A0A4X1VYD0

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RNA chain , 1 types, 1 molecules P

#10: RNA chain RNA


Mass: 6636.885 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others)

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RNA polymerase-associated protein ... , 2 types, 2 molecules QU

#11: Protein RNA polymerase-associated protein CTR9 homolog / SH2 domain-binding protein 1


Mass: 134510.203 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: CTR9, KIAA0155, SH2BP1 / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: Q6PD62
#21: Protein RNA polymerase-associated protein LEO1 / Replicative senescence down-regulated leo1-like protein


Mass: 75514.172 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: LEO1, RDL / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: Q8WVC0

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DNA chain , 2 types, 2 molecules TN

#12: DNA chain Template DNA


Mass: 78779.328 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others)
#20: DNA chain Non-template DNA


Mass: 76916.625 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others)

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Protein , 4 types, 4 molecules WVXa

#13: Protein Superkiller complex protein 8 / Ski8 / Meiotic recombination REC14 protein homolog / WD repeat-containing protein 61


Mass: 33617.465 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: SKIC8, WDR61 / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: Q9GZS3
#22: Protein RNA polymerase II-associated factor 1 homolog / hPAF1 / Pancreatic differentiation protein 2


Mass: 60052.672 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PAF1, PD2 / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: Q8N7H5
#23: Protein Parafibromin / Cell division cycle protein 73 homolog / Hyperparathyroidism 2 protein


Mass: 60673.539 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: CDC73, C1orf28, HRPT2 / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: Q6P1J9
#25: Protein Protein IWS1 homolog / IWS1-like protein


Mass: 92235.883 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: IWS1, IWS1L / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: Q96ST2

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Transcription elongation factor ... , 4 types, 4 molecules YbMZ

#14: Protein Transcription elongation factor SPT4 / hSPT4 / DRB sensitivity-inducing factor 14 kDa subunit / DSIF p14 / DRB sensitivity-inducing factor ...hSPT4 / DRB sensitivity-inducing factor 14 kDa subunit / DSIF p14 / DRB sensitivity-inducing factor small subunit / DSIF small subunit


Mass: 13508.496 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: SUPT4H1, SPT4H, SUPT4H / Production host: Escherichia coli (E. coli) / References: UniProt: P63272
#15: Protein Transcription elongation factor 1 homolog


Mass: 9616.944 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: ELOF1 / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: P60002
#19: Protein Transcription elongation factor SPT6 / hSPT6 / Histone chaperone suppressor of Ty6 / Tat-cotransactivator 2 protein / Tat-CT2 protein


Mass: 199602.969 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: SUPT6H, KIAA0162, SPT6H / Production host: Trichoplusia ni (cabbage looper) / References: UniProt: Q7KZ85
#24: Protein Transcription elongation factor SPT5 / hSPT5 / DRB sensitivity-inducing factor 160 kDa subunit / DSIF p160 / DRB sensitivity-inducing ...hSPT5 / DRB sensitivity-inducing factor 160 kDa subunit / DSIF p160 / DRB sensitivity-inducing factor large subunit / DSIF large subunit / Tat-cotransactivator 1 protein / Tat-CT1 protein


Mass: 121145.477 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: SUPT5H, SPT5, SPT5H / Production host: Escherichia coli (E. coli) / References: UniProt: O00267

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Non-polymers , 2 types, 10 molecules

#26: Chemical
ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 9 / Source method: obtained synthetically / Formula: Zn
#27: Chemical ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Mg

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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: Activated Elongation Complex (ECstar) with IWS1 and ELOF1
Type: COMPLEX
Entity ID: #16-#18, #1-#9, #19-#20, #10-#12, #21-#22, #13, #23, #14, #24-#25, #15
Source: RECOMBINANT
Molecular weightValue: 1315755.43 MDa / Experimental value: NO
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Trichoplusia ni (cabbage looper)
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: TFS KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 2000 nm / Nominal defocus min: 500 nm
Image recordingElectron dose: 40.03 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

EM software
IDNameCategory
1Warpparticle selection
2PHENIXmodel refinement
13RELION3D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 4.01 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 1837 / Symmetry type: POINT

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