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- EMDB-28547: Cryo-EM structure of PRC2 in complex with the long isoform of AEBP2 -

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Basic information

Entry
Database: EMDB / ID: EMD-28547
TitleCryo-EM structure of PRC2 in complex with the long isoform of AEBP2
Map data
Sample
  • Complex: Ternary complex of PRC2 with long isoform of AEBP2
    • Protein or peptide: Histone-binding protein RBBP4
    • Protein or peptide: Zinc finger protein AEBP2
    • Protein or peptide: Polycomb protein EED
    • Protein or peptide: Histone-lysine N-methyltransferase EZH2
    • Protein or peptide: Polycomb protein SUZ12
KeywordsPolycomb repressive complex 2 Histone methyltransferase / GENE REGULATION
Function / homology
Function and homology information


hepatocyte homeostasis / cellular response to trichostatin A / regulation of gliogenesis / negative regulation of striated muscle cell differentiation / regulation of kidney development / [histone H3]-lysine27 N-trimethyltransferase / sex chromatin / CAF-1 complex / negative regulation of keratinocyte differentiation / histone H3K27 trimethyltransferase activity ...hepatocyte homeostasis / cellular response to trichostatin A / regulation of gliogenesis / negative regulation of striated muscle cell differentiation / regulation of kidney development / [histone H3]-lysine27 N-trimethyltransferase / sex chromatin / CAF-1 complex / negative regulation of keratinocyte differentiation / histone H3K27 trimethyltransferase activity / negative regulation of retinoic acid receptor signaling pathway / cerebellar cortex development / response to tetrachloromethane / primary miRNA binding / random inactivation of X chromosome / regulatory ncRNA-mediated heterochromatin formation / skeletal muscle satellite cell maintenance involved in skeletal muscle regeneration / histone H3K27 methyltransferase activity / facultative heterochromatin formation / positive regulation of cell cycle G1/S phase transition / NuRD complex / NURF complex / regulation of cell fate specification / negative regulation of stem cell population maintenance / DNA replication-dependent chromatin assembly / ESC/E(Z) complex / Transcription of E2F targets under negative control by p107 (RBL1) and p130 (RBL2) in complex with HDAC1 / negative regulation of stem cell differentiation / regulation of stem cell differentiation / RSC-type complex / pronucleus / chromatin silencing complex / protein-lysine N-methyltransferase activity / Polo-like kinase mediated events / cardiac muscle hypertrophy in response to stress / Transcription of E2F targets under negative control by DREAM complex / G1 to G0 transition / positive regulation of dendrite development / histone H3 methyltransferase activity / synaptic transmission, GABAergic / DNA methylation-dependent constitutive heterochromatin formation / lncRNA binding / histone methyltransferase activity / negative regulation of G1/S transition of mitotic cell cycle / spinal cord development / ATPase complex / negative regulation of gene expression, epigenetic / Sin3-type complex / G1/S-Specific Transcription / positive regulation of stem cell population maintenance / oligodendrocyte differentiation / Transcriptional Regulation by E2F6 / negative regulation of transcription elongation by RNA polymerase II / RNA Polymerase I Transcription Initiation / histone deacetylase complex / G0 and Early G1 / negative regulation of cell differentiation / positive regulation of protein serine/threonine kinase activity / subtelomeric heterochromatin formation / ribonucleoprotein complex binding / pericentric heterochromatin / positive regulation of epithelial to mesenchymal transition / Transcriptional regulation of brown and beige adipocyte differentiation by EBF2 / Cyclin E associated events during G1/S transition / RNA polymerase II core promoter sequence-specific DNA binding / nucleosome binding / Cyclin A:Cdk2-associated events at S phase entry / keratinocyte differentiation / protein localization to chromatin / Regulation of TP53 Activity through Acetylation / : / Deposition of new CENPA-containing nucleosomes at the centromere / negative regulation of cytokine production involved in inflammatory response / positive regulation of GTPase activity / positive regulation of MAP kinase activity / B cell differentiation / SUMOylation of chromatin organization proteins / enzyme activator activity / negative regulation of cell migration / hippocampus development / liver regeneration / ERCC6 (CSB) and EHMT2 (G9a) positively regulate rRNA expression / Regulation of PTEN gene transcription / PRC2 methylates histones and DNA / transcription corepressor binding / Regulation of endogenous retroelements by KRAB-ZFP proteins / Defective pyroptosis / Regulation of endogenous retroelements by Piwi-interacting RNAs (piRNAs) / HDACs deacetylate histones / stem cell differentiation / transcription coregulator activity / promoter-specific chromatin binding / negative regulation of transforming growth factor beta receptor signaling pathway / regulation of circadian rhythm / brain development / protein-DNA complex / protein modification process / PKMTs methylate histone lysines / chromatin DNA binding / cellular response to hydrogen peroxide
Similarity search - Function
: / Polycomb protein SUZ12-like, Zn domain / EZH2, SET domain / Polycomb protein, VEFS-Box / VEFS-Box of polycomb protein / Histone-lysine N-methyltransferase EZH1/EZH2 / Polycomb repressive complex 2 subunit EZH1/EZH2, tri-helical domain / Pre-SET CXC domain / : / WD repeat binding protein EZH2 ...: / Polycomb protein SUZ12-like, Zn domain / EZH2, SET domain / Polycomb protein, VEFS-Box / VEFS-Box of polycomb protein / Histone-lysine N-methyltransferase EZH1/EZH2 / Polycomb repressive complex 2 subunit EZH1/EZH2, tri-helical domain / Pre-SET CXC domain / : / WD repeat binding protein EZH2 / Polycomb repressive complex 2 tri-helical domain / CXC domain / Ezh2, MCSS domain / Tesmin/TSO1-like CXC domain / Tesmin/TSO1-like CXC domain / CXC domain / Histone-lysine N-methyltransferase EZH1/2-like / CXC domain profile. / Histone-binding protein RBBP4, N-terminal / Histone-binding protein RBBP4 or subunit C of CAF1 complex / : / : / SET (Su(var)3-9, Enhancer-of-zeste, Trithorax) domain / SET domain / SET domain superfamily / SET domain profile. / SET domain / SANT SWI3, ADA2, N-CoR and TFIIIB'' DNA-binding domains / SANT/Myb domain / zinc finger / Zinc finger C2H2 type domain profile. / Zinc finger C2H2 superfamily / Zinc finger C2H2 type domain signature. / Zinc finger C2H2-type / G-protein beta WD-40 repeat / WD40 repeat, conserved site / Trp-Asp (WD) repeats signature. / WD domain, G-beta repeat / Trp-Asp (WD) repeats profile. / Trp-Asp (WD) repeats circular profile. / WD40 repeats / WD40 repeat / WD40-repeat-containing domain superfamily / WD40/YVTN repeat-like-containing domain superfamily
Similarity search - Domain/homology
Polycomb protein EED / Histone-binding protein RBBP4 / Polycomb protein SUZ12 / Histone-lysine N-methyltransferase EZH2 / Zinc finger protein AEBP2
Similarity search - Component
Biological speciesHomo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.64 Å
AuthorsBoudes M / Zhang Q / Flanigan SF / Davidovich C
Funding support Australia, 7 items
OrganizationGrant numberCountry
Australian Research Council (ARC)DP190103407 Australia
Other privateSylvia and Charles Viertel Senior Medical Research Fellowship Australia
National Health and Medical Research Council (NHMRC, Australia)APP1162921 Australia
National Health and Medical Research Council (NHMRC, Australia)APP1184637 Australia
National Health and Medical Research Council (NHMRC, Australia)APP2011767 Australia
Australian Research Council (ARC)DE180100219 Australia
National Health and Medical Research Council (NHMRC, Australia)APP1196365 Australia
CitationJournal: To Be Published
Title: To be updated
Authors: Boudes M / Zhang Q / Flanigan SF / Davidovich C
History
DepositionOct 9, 2022-
Header (metadata) releaseJul 31, 2024-
Map releaseJul 31, 2024-
UpdateJun 4, 2025-
Current statusJun 4, 2025Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_28547.png

Downloads & links

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Map

FileDownload / File: emd_28547.map.gz / Format: CCP4 / Size: 178 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
0.86 Å/pix.
x 360 pix.
= 309.6 Å		0.86 Å/pix.
x 360 pix.
= 309.6 Å		0.86 Å/pix.
x 360 pix.
= 309.6 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 0.86 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.18
Minimum - Maximum-0.2949924 - 0.802014
Average (Standard dev.)0.0012688375 (±0.026894417)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions360360360
Spacing360360360
CellA=B=C: 309.6 Å
α=β=γ: 90.0 °

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Supplemental data

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Additional map: #1

Fileemd_28547_additional_1.map
Projections & Slices
AxesZYX

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Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: #2

Fileemd_28547_half_map_1.map
Projections & Slices
AxesZYX

Projections

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Density Histograms

Histogram

Histogram (log scale)

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Half map: #1

Fileemd_28547_half_map_2.map
Projections & Slices
AxesZYX

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Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : Ternary complex of PRC2 with long isoform of AEBP2

EntireName: Ternary complex of PRC2 with long isoform of AEBP2
Components
  • Complex: Ternary complex of PRC2 with long isoform of AEBP2
    • Protein or peptide: Histone-binding protein RBBP4
    • Protein or peptide: Zinc finger protein AEBP2
    • Protein or peptide: Polycomb protein EED
    • Protein or peptide: Histone-lysine N-methyltransferase EZH2
    • Protein or peptide: Polycomb protein SUZ12

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Supramolecule #1: Ternary complex of PRC2 with long isoform of AEBP2

SupramoleculeName: Ternary complex of PRC2 with long isoform of AEBP2 / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all
Source (natural)Organism: Homo sapiens (human)

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Macromolecule #1: Histone-binding protein RBBP4

MacromoleculeName: Histone-binding protein RBBP4 / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 47.709527 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString: MADKEAAFDD AVEERVINEE YKIWKKNTPF LYDLVMTHAL EWPSLTAQWL PDVTRPEGKD FSIHRLVLGT HTSDEQNHLV IASVQLPND DAQFDASHYD SEKGEFGGFG SVSGKIEIEI KINHEGEVNR ARYMPQNPCI IATKTPSSDV LVFDYTKHPS K PDPSGECN ...String:
MADKEAAFDD AVEERVINEE YKIWKKNTPF LYDLVMTHAL EWPSLTAQWL PDVTRPEGKD FSIHRLVLGT HTSDEQNHLV IASVQLPND DAQFDASHYD SEKGEFGGFG SVSGKIEIEI KINHEGEVNR ARYMPQNPCI IATKTPSSDV LVFDYTKHPS K PDPSGECN PDLRLRGHQK EGYGLSWNPN LSGHLLSASD DHTICLWDIS AVPKEGKVVD AKTIFTGHTA VVEDVSWHLL HE SLFGSVA DDQKLMIWDT RSNNTSKPSH SVDAHTAEVN CLSFNPYSEF ILATGSADKT VALWDLRNLK LKLHSFESHK DEI FQVQWS PHNETILASS GTDRRLNVWD LSKIGEEQSP EDAEDGPPEL LFIHGGHTAK ISDFSWNPNE PWVICSVSED NIMQ VWQMA ENIYNDEDPE GSVDPEGQGS

UniProtKB: Histone-binding protein RBBP4

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Macromolecule #2: Zinc finger protein AEBP2

MacromoleculeName: Zinc finger protein AEBP2 / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 54.535496 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString: MAAAITDMAD LEELSRLSPL PPGSPGSAAR GRAEPPEEEE EEEEEEEEAE AEAVAALLLN GGSGGGGGGG GGGVGGGEAE TMSEPSPES ASQAGEDEDE EEDDEEEEDE SSSSGGGEEE SSAESLVGSS GGSSSDETRS LSPGAASSSS GDGDGKEGLE E PKGPRGSQ ...String:
MAAAITDMAD LEELSRLSPL PPGSPGSAAR GRAEPPEEEE EEEEEEEEAE AEAVAALLLN GGSGGGGGGG GGGVGGGEAE TMSEPSPES ASQAGEDEDE EEDDEEEEDE SSSSGGGEEE SSAESLVGSS GGSSSDETRS LSPGAASSSS GDGDGKEGLE E PKGPRGSQ GGGGGGSSSS SVVSSGGDEG YGTGGGGSSA TSGGRRGSLE MSSDGEPLSR MDSEDSISST IMDVDSTISS GR STPAMMN GQGSTTSSSK NIAYNCCWDQ CQACFNSSPD LADHIRSIHV DGQRGGVFVC LWKGCKVYNT PSTSQSWLQR HML THSGDK PFKCVVGGCN ASFASQGGLA RHVPTHFSQQ NSSKVSSQPK AKEESPSKAG MNKRRKLKNK RRRSLPRPHD FFDA QTLDA IRHRAICFNL SAHIESLGKG HSVVFHSTVI AKRKEDSGKI KLLLHWMPED ILPDVWVNES ERHQLKTKVV HLSKL PKDT ALLLDPNIYR TMPQKRLKRT LIRKVFNLYL SKQ

UniProtKB: Zinc finger protein AEBP2

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Macromolecule #3: Polycomb protein EED

MacromoleculeName: Polycomb protein EED / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 50.267691 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString: MSEREVSTAP AGTDMPAAKK QKLSSDENSN PDLSGDENDD AVSIESGTNT ERPDTPTNTP NAPGRKSWGK GKWKSKKCKY SFKCVNSLK EDHNQPLFGV QFNWHSKEGD PLVFATVGSN RVTLYECHSQ GEIRLLQSYV DADADENFYT CAWTYDSNTS H PLLAVAGS ...String:
MSEREVSTAP AGTDMPAAKK QKLSSDENSN PDLSGDENDD AVSIESGTNT ERPDTPTNTP NAPGRKSWGK GKWKSKKCKY SFKCVNSLK EDHNQPLFGV QFNWHSKEGD PLVFATVGSN RVTLYECHSQ GEIRLLQSYV DADADENFYT CAWTYDSNTS H PLLAVAGS RGIIRIINPI TMQCIKHYVG HGNAINELKF HPRDPNLLLS VSKDHALRLW NIQTDTLVAI FGGVEGHRDE VL SADYDLL GEKIMSCGMD HSLKLWRINS KRMMNAIKES YDYNPNKTNR PFISQKIHFP DFSTRDIHRN YVDCVRWLGD LIL SKSCEN AIVCWKPGKM EDDIDKIKPS ESNVTILGRF DYSQCDIWYM RFSMDFWQKM LALGNQVGKL YVWDLEVEDP HKAK CTTLT HHKCGAAIRQ TSFSRDSSIL IAVCDDASIW RWDRLR

UniProtKB: Polycomb protein EED

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Macromolecule #4: Histone-lysine N-methyltransferase EZH2

MacromoleculeName: Histone-lysine N-methyltransferase EZH2 / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO / EC number: [histone H3]-lysine27 N-trimethyltransferase
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 85.492297 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString: MGQTGKKSEK GPVCWRKRVK SEYMRLRQLK RFRRADEVKS MFSSNRQKIL ERTEILNQEW KQRRIQPVHI LTSVSSLRGT RECSVTSDL DFPTQVIPLK TLNAVASVPI MYSWSPLQQN FMVEDETVLH NIPYMGDEVL DQDGTFIEEL IKNYDGKVHG D RECGFIND ...String:
MGQTGKKSEK GPVCWRKRVK SEYMRLRQLK RFRRADEVKS MFSSNRQKIL ERTEILNQEW KQRRIQPVHI LTSVSSLRGT RECSVTSDL DFPTQVIPLK TLNAVASVPI MYSWSPLQQN FMVEDETVLH NIPYMGDEVL DQDGTFIEEL IKNYDGKVHG D RECGFIND EIFVELVNAL GQYNDDDDDD DGDDPEEREE KQKDLEDHRD DKESRPPRKF PSDKIFEAIS SMFPDKGTAE EL KEKYKEL TEQQLPGALP PECTPNIDGP NAKSVQREQS LHSFHTLFCR RCFKYDCFLH PFHATPNTYK RKNTETALDN KPC GPQCYQ HLEGAKEFAA ALTAERIKTP PKRPGGRRRG RLPNNSSRPS TPTINVLESK DTDSDREAGT ETGGENNDKE EEEK KDETS SSSEANSRCQ TPIKMKPNIE PPENVEWSGA EASMFRVLIG TYYDNFCAIA RLIGTKTCRQ VYEFRVKESS IIAPA PAED VDTPPRKKKR KHRLWAAHCR KIQLKKDGSS NHVYNYQPCD HPRQPCDSSC PCVIAQNFCE KFCQCSSECQ NRFPGC RCK AQCNTKQCPC YLAVRECDPD LCLTCGAADH WDSKNVSCKN CSIQRGSKKH LLLAPSDVAG WGIFIKDPVQ KNEFISE YC GEIISQDEAD RRGKVYDKYM CSFLFNLNND FVVDATRKGN KIRFANHSVN PNCYAKVMMV NGDHRIGIFA KRAIQTGE E LFFDYRYSQA DALKYVGIER EMEIP

UniProtKB: Histone-lysine N-methyltransferase EZH2

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Macromolecule #5: Polycomb protein SUZ12

MacromoleculeName: Polycomb protein SUZ12 / type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 83.181922 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString: MAPQKHGGGG GGGSGPSAGS GGGGFGGSAA VAAATASGGK SGGGSCGGGG SYSASSSSSA AAAAGAAVLP VKKPKMEHVQ ADHELFLQA FEKPTQIYRF LRTRNLIAPI FLHRTLTYMS HRNSRTNIKR KTFKVDDMLS KVEKMKGEQE SHSLSAHLQL T FTGFFHKN ...String:
MAPQKHGGGG GGGSGPSAGS GGGGFGGSAA VAAATASGGK SGGGSCGGGG SYSASSSSSA AAAAGAAVLP VKKPKMEHVQ ADHELFLQA FEKPTQIYRF LRTRNLIAPI FLHRTLTYMS HRNSRTNIKR KTFKVDDMLS KVEKMKGEQE SHSLSAHLQL T FTGFFHKN DKPSPNSENE QNSVTLEVLL VKVCHKKRKD VSCPIRQVPT GKKQVPLNPD LNQTKPGNFP SLAVSSNEFE PS NSHMVKS YSLLFRVTRP GRREFNGMIN GETNENIDVN EELPARRKRN REDGEKTFVA QMTVFDKNRR LQLLDGEYEV AMQ EMEECP ISKKRATWET ILDGKRLPPF ETFSQGPTLQ FTLRWTGETN DKSTAPIAKP LATRNSESLH QENKPGSVKP TQTI AVKES LTTDLQTRKE KDTPNENRQK LRIFYQFLYN NNTRQQTEAR DDLHCPWCTL NCRKLYSLLK HLKLCHSRFI FNYVY HPKG ARIDVSINEC YDGSYAGNPQ DIHRQPGFAF SRNGPVKRTP ITHILVCRPK RTKASMSEFL ESEDGEVEQQ RTYSSG HNR LYFHSDTCLP LRPQEMEVDS EDEKDPEWLR EKTITQIEEF SDVNEGEKEV MKLWNLHVMK HGFIADNQMN HACMLFV EN YGQKIIKKNL CRNFMLHLVS MHDFNLISIM SIDKAVTKLR EMQQKLEKGE SASPANEEIT EEQNGTANGF SEINSKEK A LETDSVSGVS KQSKKQKL

UniProtKB: Polycomb protein SUZ12

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

Concentration2.4 mg/mL
BufferpH: 7.5
Component:
ConcentrationFormulaName
200.0 mMNaClsodium chloride
20.0 mMHEPES
1.0 mMTCEP
0.01 %NP-40

Details: 200 mM NaCl, 20 mM HEPES pH 7.5, 1 mM TCEP, 0.01% NP-40
GridModel: Quantifoil R1.2/1.3 / Material: COPPER / Mesh: 200 / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Time: 120 sec. / Pretreatment - Atmosphere: AIR / Details: 0.24 mBar, 120 s, 10 mAmp
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277 K / Instrument: FEI VITROBOT MARK IV / Details: Blotting 3 seconds.
DetailsPrior to cryo-EM sample preparation, complexes were PEGylated at 0.9 mg/mL with 5 mM MS(PEG)4 Methyl-PEG-NHS-Ester (ThermoFisher Scientific) for 2 h at 4oC.

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Specialist opticsEnergy filter - Name: GIF Quantum ER / Energy filter - Slit width: 10 eV
Image recordingFilm or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 60.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.5 µm / Nominal defocus min: 0.5 µm / Nominal magnification: 105000
Sample stageSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Particle selectionNumber selected: 847067
CTF correctionSoftware - Name: CTFFIND (ver. 4.1) / Type: PHASE FLIPPING AND AMPLITUDE CORRECTION
Startup modelType of model: PDB ENTRY
PDB model - PDB ID:

5wai


Details: 5WAI, 6WKR
Final reconstructionNumber classes used: 1 / Applied symmetry - Point group: C1 (asymmetric) / Resolution.type: BY AUTHOR / Resolution: 3.64 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC (ver. 3.3.2) / Software - details: non-uniform refinement / Number images used: 45024
Initial angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: cryoSPARC (ver. 3.3.2) / Software - details: ab initio
Final angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: cryoSPARC (ver. 3.3.2) / Software - details: non-uniform refinement
Final 3D classificationNumber classes: 1
FSC plot (resolution estimation)

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