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- EMDB-29578: G4 RNA-mediated PRC2 dimer -

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Basic information

Entry
Database: EMDB / ID: EMD-29578
TitleG4 RNA-mediated PRC2 dimer
Map dataconsensus map of G4 RNA-mediated PRC2 dimer
Sample
  • Complex: G4 RNA-mediated dimer of polycomb repressive complex 2
    • Protein or peptide: Polycomb protein SUZ12
    • Protein or peptide: Polycomb protein EED
    • Protein or peptide: Histone-binding protein RBBP4
    • Protein or peptide: Histone-lysine N-methyltransferase EZH2
    • Protein or peptide: protein Jumonji isoform X3
    • Protein or peptide: Zinc finger protein AEBP2
    • RNA: G4 RNA
  • Ligand: ZINC ION
KeywordsPRC2 / G-quadruplex RNA / RNP complex / chromatin modifier / GENE REGULATION
Function / homology
Function and homology information


hepatocyte homeostasis / regulation of kidney development / cellular response to trichostatin A / regulation of gliogenesis / negative regulation of striated muscle cell differentiation / [histone H3]-lysine27 N-trimethyltransferase / sex chromatin / CAF-1 complex / negative regulation of keratinocyte differentiation / histone H3K27 trimethyltransferase activity ...hepatocyte homeostasis / regulation of kidney development / cellular response to trichostatin A / regulation of gliogenesis / negative regulation of striated muscle cell differentiation / [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 / skeletal muscle satellite cell maintenance involved in skeletal muscle regeneration / response to tetrachloromethane / cerebellar cortex development / random inactivation of X chromosome / primary miRNA binding / regulatory ncRNA-mediated heterochromatin formation / histone H3K27 methyltransferase activity / facultative heterochromatin formation / positive regulation of cell cycle G1/S phase transition / NURF complex / NuRD 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 / regulation of stem cell differentiation / chromatin silencing complex / protein-lysine N-methyltransferase activity / RSC-type complex / negative regulation of stem cell differentiation / Transcription of E2F targets under negative control by DREAM complex / pronucleus / cardiac muscle hypertrophy in response to stress / Polo-like kinase mediated events / synaptic transmission, GABAergic / positive regulation of dendrite development / histone H3 methyltransferase activity / lncRNA binding / negative regulation of G1/S transition of mitotic cell cycle / spinal cord development / G1 to G0 transition / negative regulation of gene expression, epigenetic / G1/S-Specific Transcription / positive regulation of stem cell population maintenance / ATPase complex / histone methyltransferase activity / Sin3-type complex / negative regulation of transcription elongation by RNA polymerase II / Transcriptional Regulation by E2F6 / oligodendrocyte differentiation / RNA Polymerase I Transcription Initiation / histone deacetylase complex / negative regulation of cell differentiation / G0 and Early G1 / subtelomeric heterochromatin formation / negative regulation of cytokine production involved in inflammatory response / RNA polymerase II core promoter sequence-specific DNA binding / ribonucleoprotein complex binding / pericentric heterochromatin / Cyclin E associated events during G1/S transition / Transcriptional regulation of brown and beige adipocyte differentiation by EBF2 / positive regulation of epithelial to mesenchymal transition / Cyclin A:Cdk2-associated events at S phase entry / keratinocyte differentiation / Deposition of new CENPA-containing nucleosomes at the centromere / protein localization to chromatin / Regulation of TP53 Activity through Acetylation / enzyme activator activity / methylated histone binding / SUMOylation of chromatin organization proteins / B cell differentiation / positive regulation of GTPase activity / transcription corepressor binding / ERCC6 (CSB) and EHMT2 (G9a) positively regulate rRNA expression / negative regulation of cell migration / PRC2 methylates histones and DNA / Regulation of PTEN gene transcription / Regulation of endogenous retroelements by KRAB-ZFP proteins / Defective pyroptosis / hippocampus development / Regulation of endogenous retroelements by Piwi-interacting RNAs (piRNAs) / stem cell differentiation / HDACs deacetylate histones / promoter-specific chromatin binding / liver regeneration / transcription coregulator activity / negative regulation of transforming growth factor beta receptor signaling pathway / positive regulation of MAP kinase activity / brain development / regulation of circadian rhythm / protein modification process / positive regulation of protein serine/threonine kinase activity / chromatin DNA binding / heterochromatin formation / PKMTs methylate histone lysines / histone deacetylase binding / Activation of anterior HOX genes in hindbrain development during early embryogenesis / cellular response to hydrogen peroxide
Similarity search - Function
: / 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 ...: / 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 / : / Zinc finger, C5HC2-type / C5HC2 zinc finger / ARID DNA-binding domain / ARID DNA-binding domain superfamily / ARID/BRIGHT DNA binding domain / ARID domain profile. / BRIGHT, ARID (A/T-rich interaction domain) domain / ARID/BRIGHT DNA binding domain / JmjN domain / jmjN domain / JmjN domain profile. / Small domain found in the jumonji family of transcription factors / 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 / JmjC domain, hydroxylase / SANT/Myb domain / A domain family that is part of the cupin metalloenzyme superfamily. / zinc finger / JmjC domain / JmjC domain profile. / 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. / Trp-Asp (WD) repeats profile. / Trp-Asp (WD) repeats circular profile. / WD domain, G-beta repeat / WD40 repeats / WD40 repeat / WD40-repeat-containing domain superfamily / WD40/YVTN repeat-like-containing domain superfamily
Similarity search - Domain/homology
Protein Jumonji isoform X3 / 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: 3.4 Å
AuthorsSong J / Kasinath V
Funding support United States, 2 items
OrganizationGrant numberCountry
Howard Hughes Medical Institute (HHMI) United States
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)R00GM132544 United States
CitationJournal: Science / Year: 2023
Title: Structural basis for inactivation of PRC2 by G-quadruplex RNA.
Authors: Jiarui Song / Anne R Gooding / Wayne O Hemphill / Brittney D Love / Anne Robertson / Liqi Yao / Leonard I Zon / Trista E North / Vignesh Kasinath / Thomas R Cech /
Abstract: Polycomb repressive complex 2 (PRC2) silences genes through trimethylation of histone H3K27. PRC2 associates with numerous precursor messenger RNAs (pre-mRNAs) and long noncoding RNAs (lncRNAs) with ...Polycomb repressive complex 2 (PRC2) silences genes through trimethylation of histone H3K27. PRC2 associates with numerous precursor messenger RNAs (pre-mRNAs) and long noncoding RNAs (lncRNAs) with a binding preference for G-quadruplex RNA. In this work, we present a 3.3-Å-resolution cryo-electron microscopy structure of PRC2 bound to a G-quadruplex RNA. Notably, RNA mediates the dimerization of PRC2 by binding both protomers and inducing a protein interface composed of two copies of the catalytic subunit EZH2, thereby blocking nucleosome DNA interaction and histone H3 tail accessibility. Furthermore, an RNA-binding loop of EZH2 facilitates the handoff between RNA and DNA, another activity implicated in PRC2 regulation by RNA. We identified a gain-of-function mutation in this loop that activates PRC2 in zebrafish. Our results reveal mechanisms for RNA-mediated regulation of a chromatin-modifying enzyme.
History
DepositionJan 26, 2023-
Header (metadata) releaseOct 4, 2023-
Map releaseOct 4, 2023-
UpdateOct 30, 2024-
Current statusOct 30, 2024Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_29578.png

Downloads & links

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Map

FileDownload / File: emd_29578.map.gz / Format: CCP4 / Size: 103 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Annotationconsensus map of G4 RNA-mediated PRC2 dimer
Projections & slices

Image control

Size
Brightness
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Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.06 Å/pix.
x 300 pix.
= 319.032 Å		1.06 Å/pix.
x 300 pix.
= 319.032 Å		1.06 Å/pix.
x 300 pix.
= 319.032 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.06344 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.014
Minimum - Maximum-0.01349198 - 0.05151586
Average (Standard dev.)0.00025862228 (±0.0024155364)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions300300300
Spacing300300300
CellA=B=C: 319.03198 Å
α=β=γ: 90.0 °

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Supplemental data

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Mask #1

Fileemd_29578_msk_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
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Histogram

Histogram (log scale)

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Additional map: consensus map of G4 RNA-mediated PRC2 dimer after...

Fileemd_29578_additional_1.map
Annotationconsensus map of G4 RNA-mediated PRC2 dimer after postprocessing with B-factor of -40
Projections & Slices
AxesZYX

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Histogram

Histogram (log scale)

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Half map: half map 2 of consensus map

Fileemd_29578_half_map_1.map
Annotationhalf map 2 of consensus map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: half map 1 of consensus map

Fileemd_29578_half_map_2.map
Annotationhalf map 1 of consensus map
Projections & Slices
AxesZYX

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Sample components

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Entire : G4 RNA-mediated dimer of polycomb repressive complex 2

EntireName: G4 RNA-mediated dimer of polycomb repressive complex 2
Components
  • Complex: G4 RNA-mediated dimer of polycomb repressive complex 2
    • Protein or peptide: Polycomb protein SUZ12
    • Protein or peptide: Polycomb protein EED
    • Protein or peptide: Histone-binding protein RBBP4
    • Protein or peptide: Histone-lysine N-methyltransferase EZH2
    • Protein or peptide: protein Jumonji isoform X3
    • Protein or peptide: Zinc finger protein AEBP2
    • RNA: G4 RNA
  • Ligand: ZINC ION

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Supramolecule #1: G4 RNA-mediated dimer of polycomb repressive complex 2

SupramoleculeName: G4 RNA-mediated dimer of polycomb repressive complex 2
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#7
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 800 KDa

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Macromolecule #1: Polycomb protein SUZ12

MacromoleculeName: Polycomb protein SUZ12 / type: protein_or_peptide / ID: 1 / Number of copies: 2 / 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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Macromolecule #2: Polycomb protein EED

MacromoleculeName: Polycomb protein EED / type: protein_or_peptide / ID: 2 / Number of copies: 2 / 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 #3: Histone-binding protein RBBP4

MacromoleculeName: Histone-binding protein RBBP4 / type: protein_or_peptide / ID: 3 / Number of copies: 2 / 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 #4: Histone-lysine N-methyltransferase EZH2

MacromoleculeName: Histone-lysine N-methyltransferase EZH2 / type: protein_or_peptide / ID: 4 / Number of copies: 2 / Enantiomer: LEVO / EC number: [histone H3]-lysine27 N-trimethyltransferase
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 86.149055 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 RKCNYSFHAT PNTYKRKNTE TAL DNKPCG PQCYQHLEGA KEFAAALTAE RIKTPPKRPG GRRRGRLPNN SSRPSTPTIN VLESKDTDSD REAGTETGGE NNDK EEEEK KDETSSSSEA NSRCQTPIKM KPNIEPPENV EWSGAEASMF RVLIGTYYDN FCAIARLIGT KTCRQVYEFR VKESS IIAP APAEDVDTPP RKKKRKHRLW AAHCRKIQLK KDGSSNHVYN YQPCDHPRQP CDSSCPCVIA QNFCEKFCQC SSECQN RFP GCRCKAQCNT KQCPCYLAVR ECDPDLCLTC GAADHWDSKN VSCKNCSIQR GSKKHLLLAP SDVAGWGIFI KDPVQKN EF ISEYCGEIIS QDEADRRGKV YDKYMCSFLF NLNNDFVVDA TRKGNKIRFA NHSVNPNCYA KVMMVNGDHR IGIFAKRA I QTGEELFFDY RYSQADALKY VGIEREMEIP

UniProtKB: Histone-lysine N-methyltransferase EZH2

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Macromolecule #5: protein Jumonji isoform X3

MacromoleculeName: protein Jumonji isoform X3 / type: protein_or_peptide / ID: 5 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 138.406219 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString: MSKERPKRNI IQKKYDDSDG IPWSEERVVR KVLYLSLKEF KNAQKRQHGE GIAGSLKSVN GLLGNDQSKA LGPASEQSEN EKDDASQVS STSNDVSSSD FEEGPSRKRP RLQAQRKFAQ SQPNSPSTTP VKTVEPLLPP PATQISDLSK RKPKTEDFLT F LCLRGSPA ...String:
MSKERPKRNI IQKKYDDSDG IPWSEERVVR KVLYLSLKEF KNAQKRQHGE GIAGSLKSVN GLLGNDQSKA LGPASEQSEN EKDDASQVS STSNDVSSSD FEEGPSRKRP RLQAQRKFAQ SQPNSPSTTP VKTVEPLLPP PATQISDLSK RKPKTEDFLT F LCLRGSPA LPSSMVYFGS SQDEEDVEEE DDETEDVKTA NNNASSSCQS TPRKGKTHKH VHNGHVFNGS NRSTREKEPA QK HKSKETT PAKEKHIDHR ADSRREPASV AQPTATPSAG SLAKGLPANH QPPPPHRSAQ DLRKQVTLHV SKVNGVTRMS SLG AGTTSA KKIREVRPSP SKTVKYTATV TKGTVTYTKA KRELVKETKP THHKPSSAVN HTISGKTESS NAKTRKQVLS LGGA STSTG PAASGLKASS RLNPKSCTKE VGGRQLREGL RNSKRRLEEA QQVDKPQSPP KKMKGAAGIA EAPGKKASAA SAEKS LLNG HVKKEVPERS LERNRPKRAT AGKNMPGKQA HGKAEGTPCE NRSTSQPESS HKPHDPQGKP EKGIGKSGWT AMDEIP VLR PSAKEFHDPL IYIESVRAQV EKYGMCRVIP PPDWRPECKL NDEMRFVTQI QHIHKLGRRW GPNVQRLACI KKHLRSQ GI TMDELPLIGG CELDLACFFR LINEMGGMQQ VTDLKKWNKL ADMLRIPKTA QDRLAKLQEA YCQYLLSYDS LSPEEHRR L EKEVLMEKEI LEKRKGPLEG HTENDHHKFH SLPRFEPKNG LIHGVTPRNG FRSKLKEVGQ APLKTGRRRL FAQEKEVVK EEEEDKGVLN DFHKCIYKGR SVSLTTFYRT ARNIMNMCFS KEPAPAEIEQ EYWRLVEEKD CHVAVHCGKV DTNTHGSGFP VGKSEPFSR HGWNLTVLPN NTGSILRHLG AVPGVTIPWL NIGMVFSTSC WSRDQNHLPY IDYLHTGADC IWYCIPAEEE N KLEDVVHT LLQANGTPGL QMLESNVMIS PEVLCKEGIK VHRTVQQSGQ FVVCFPGSFV SKVCCGYSVS ETVHFATTQW TS MGFETAK EMKRRHIAKP FSMEKLLYQI AQAEAKKENG PTLSTISALL DELRDTELRQ RRQLFEAGLH SSARYGSHDG NST VADGKK KPRKWLQLET SERRCQICQH LCYLSMVVQE NENVVFCLEC ALRHVEKQKS CRGLKLMYRY DEEQIISLVN QICG KVSGK HGGIENCLNK PTPKRGPRKR ATVDVPPSRL PSS

UniProtKB: Protein Jumonji isoform X3

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Macromolecule #6: Zinc finger protein AEBP2

MacromoleculeName: Zinc finger protein AEBP2 / type: protein_or_peptide / ID: 6 / Number of copies: 2 / 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 #7: G4 RNA

MacromoleculeName: G4 RNA / type: rna / ID: 7 / Number of copies: 1
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 7.955823 KDa
SequenceString:
GGGUAAGGGU AAGGGUAAGG GUAA

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Macromolecule #8: ZINC ION

MacromoleculeName: ZINC ION / type: ligand / ID: 8 / Number of copies: 14 / Formula: ZN
Molecular weightTheoretical: 65.409 Da

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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

BufferpH: 7.9
Component:
ConcentrationFormulaName
25.0 mMC8H18N2O4SHEPES
50.0 mMKClPotassium chloride
2.5 %C3H8O3Glycerol
0.01 %np-40 substitute
1.0 mMC9H15O6PTCEP

Details: RNP complex buffer (25 mM HEPES pH 7.9, 50 mM KCl, 2 mM MgCl2, 10% glycerol, and 1mM TCEP) EM preparation buffer I (25 mM HEPES pH 7.9, 50 mM KCl, 2.5% glycerol, and 1mM TCEP) EM preparation ...Details: RNP complex buffer (25 mM HEPES pH 7.9, 50 mM KCl, 2 mM MgCl2, 10% glycerol, and 1mM TCEP) EM preparation buffer I (25 mM HEPES pH 7.9, 50 mM KCl, 2.5% glycerol, and 1mM TCEP) EM preparation buffer II (25 mM HEPES pH 7.9, 50 mM KCl, 2.5% glycerol, 0.01%NP-40, and 1mM TCEP).
GridModel: Quantifoil R2/1 / Material: GOLD / Mesh: 300 / Support film - Material: CARBON / Support film - topology: CONTINUOUS / Support film - Film thickness: 1.5
VitrificationCryogen name: ETHANE / Chamber humidity: 90 % / Chamber temperature: 281 K / Instrument: LEICA PLUNGER / Details: 3s of single side blotting.
DetailsWe used streptavidin-affinity grid preparation method with biotin-labeled RNA at 100 nM concentration. PRC2 was applied in excess at 600 nM.

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Specialist opticsEnergy filter - Slit width: 20 eV
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Number grids imaged: 1 / Number real images: 18632 / Average electron dose: 60.0 e/Å2 / Details: 60 frames per movie
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 0.01 mm / Nominal defocus max: 2.0 µm / Nominal defocus min: 0.6 µm / Nominal magnification: 81000
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: 3885383
Startup modelType of model: OTHER / Details: Negative staining model
Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.4 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION (ver. 4.0-beta-2) / Number images used: 217196
Initial angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: RELION (ver. 4.0-beta-2)
Final angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: RELION (ver. 4.0-beta-2)
Final 3D classificationNumber classes: 2 / Software - Name: RELION (ver. 4.0-beta-2)
FSC plot (resolution estimation)

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