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- EMDB-26809: KDM2A-nucleosome structure stabilized by H3K36C-UNC8015 covalent ... -

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Basic information

Entry
Database: EMDB / ID: EMD-26809
TitleKDM2A-nucleosome structure stabilized by H3K36C-UNC8015 covalent conjugate
Map dataKDM2A-nucleosome complex stabilized by H3K36C-UNC8015 covalent conjugate
Sample
  • Complex: KDM2A-nucleosome complex stabilized by H3K36C-UNC8015 covalent conjugate
    • Protein or peptide: Histone H3.2
    • Protein or peptide: Histone H4
    • Protein or peptide: Histone H2A type 1
    • Protein or peptide: Histone H2B type 1-C/E/F/G/I
    • DNA: DNA (185-MER)
    • DNA: DNA (185-MER)
    • Protein or peptide: Lysine-specific demethylase 2A
  • Ligand: N-heptanoyl-N-hydroxy-beta-alanine
  • Ligand: FE (III) ION
Keywordschromatin nucleosome lysine demethylase JmjC protein / GENE REGULATION-DNA complex
Function / homology
Function and homology information


[histone H3]-dimethyl-L-lysine36 demethylase / histone H3K36me/H3K36me2 demethylase activity / unmethylated CpG binding / histone H3K36 demethylase activity / negative regulation of transcription by competitive promoter binding / histone demethylase activity / negative regulation of megakaryocyte differentiation / protein localization to CENP-A containing chromatin / Chromatin modifying enzymes / Replacement of protamines by nucleosomes in the male pronucleus ...[histone H3]-dimethyl-L-lysine36 demethylase / histone H3K36me/H3K36me2 demethylase activity / unmethylated CpG binding / histone H3K36 demethylase activity / negative regulation of transcription by competitive promoter binding / histone demethylase activity / negative regulation of megakaryocyte differentiation / protein localization to CENP-A containing chromatin / Chromatin modifying enzymes / Replacement of protamines by nucleosomes in the male pronucleus / CENP-A containing nucleosome / Packaging Of Telomere Ends / Recognition and association of DNA glycosylase with site containing an affected purine / Cleavage of the damaged purine / Deposition of new CENPA-containing nucleosomes at the centromere / nucleosomal DNA binding / Recognition and association of DNA glycosylase with site containing an affected pyrimidine / Cleavage of the damaged pyrimidine / Inhibition of DNA recombination at telomere / telomere organization / Meiotic synapsis / Interleukin-7 signaling / RNA Polymerase I Promoter Opening / Assembly of the ORC complex at the origin of replication / SUMOylation of chromatin organization proteins / Regulation of endogenous retroelements by the Human Silencing Hub (HUSH) complex / DNA methylation / Condensation of Prophase Chromosomes / SIRT1 negatively regulates rRNA expression / Chromatin modifications during the maternal to zygotic transition (MZT) / ERCC6 (CSB) and EHMT2 (G9a) positively regulate rRNA expression / HCMV Late Events / innate immune response in mucosa / PRC2 methylates histones and DNA / Regulation of endogenous retroelements by KRAB-ZFP proteins / Defective pyroptosis / Regulation of endogenous retroelements by Piwi-interacting RNAs (piRNAs) / HDACs deacetylate histones / Nonhomologous End-Joining (NHEJ) / RNA Polymerase I Promoter Escape / Transcriptional regulation by small RNAs / transcription coregulator activity / circadian regulation of gene expression / Formation of the beta-catenin:TCF transactivating complex / regulation of circadian rhythm / RUNX1 regulates genes involved in megakaryocyte differentiation and platelet function / NoRC negatively regulates rRNA expression / Activated PKN1 stimulates transcription of AR (androgen receptor) regulated genes KLK2 and KLK3 / G2/M DNA damage checkpoint / HDMs demethylate histones / B-WICH complex positively regulates rRNA expression / DNA Damage/Telomere Stress Induced Senescence / heterochromatin formation / PKMTs methylate histone lysines / Metalloprotease DUBs / Meiotic recombination / Pre-NOTCH Transcription and Translation / RMTs methylate histone arginines / double-strand break repair via nonhomologous end joining / Activation of anterior HOX genes in hindbrain development during early embryogenesis / HCMV Early Events / Transcriptional regulation of granulopoiesis / structural constituent of chromatin / UCH proteinases / antimicrobial humoral immune response mediated by antimicrobial peptide / nucleosome / nucleosome assembly / E3 ubiquitin ligases ubiquitinate target proteins / antibacterial humoral response / Recruitment and ATM-mediated phosphorylation of repair and signaling proteins at DNA double strand breaks / chromatin organization / RUNX1 regulates transcription of genes involved in differentiation of HSCs / chromosome / Factors involved in megakaryocyte development and platelet production / HATs acetylate histones / Processing of DNA double-strand break ends / Senescence-Associated Secretory Phenotype (SASP) / Oxidative Stress Induced Senescence / Estrogen-dependent gene expression / chromosome, telomeric region / Ub-specific processing proteases / defense response to Gram-positive bacterium / protein heterodimerization activity / Amyloid fiber formation / regulation of transcription by RNA polymerase II / enzyme binding / protein-containing complex / DNA binding / RNA binding / extracellular space / extracellular exosome / zinc ion binding / extracellular region / nucleoplasm / identical protein binding / membrane / nucleus / cytosol
Similarity search - Function
PHD-finger / Jumonji, helical domain / Jumonji helical domain / : / Leucine-rich repeat, cysteine-containing subtype / Leucine-rich repeat - CC (cysteine-containing) subfamily / F-box-like / CXXC zinc finger domain / Zinc finger, CXXC-type / Zinc finger CXXC-type profile. ...PHD-finger / Jumonji, helical domain / Jumonji helical domain / : / Leucine-rich repeat, cysteine-containing subtype / Leucine-rich repeat - CC (cysteine-containing) subfamily / F-box-like / CXXC zinc finger domain / Zinc finger, CXXC-type / Zinc finger CXXC-type profile. / F-box domain / A domain family that is part of the cupin metalloenzyme superfamily. / JmjC domain / JmjC domain profile. / Zinc finger, PHD-type, conserved site / Zinc finger PHD-type signature. / Histone H2B signature. / Histone H2B / Histone H2B / Histone H2A conserved site / Histone H2A signature. / Histone H2A, C-terminal domain / C-terminus of histone H2A / Histone H4, conserved site / Histone H4 signature. / Histone H4 / Histone H4 / Histone H2A / Histone 2A / CENP-T/Histone H4, histone fold / Centromere kinetochore component CENP-T histone fold / TATA box binding protein associated factor / TATA box binding protein associated factor (TAF), histone-like fold domain / Zinc finger PHD-type profile. / Zinc finger, PHD-finger / Zinc finger, PHD-type / PHD zinc finger / Histone H3 signature 1. / Leucine-rich repeat domain superfamily / Histone H3 signature 2. / Histone H3 / Histone H3/CENP-A / Zinc finger, FYVE/PHD-type / Histone H2A/H2B/H3 / Core histone H2A/H2B/H3/H4 / Histone-fold / Zinc finger, RING/FYVE/PHD-type
Similarity search - Domain/homology
Histone H2A type 1 / Histone H4 / Histone H2B type 1-C/E/F/G/I / Histone H3.2 / Lysine-specific demethylase 2A
Similarity search - Component
Biological speciesHomo sapiens (human) / synthetic construct (others)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.2 Å
AuthorsSpangler CJ / Skrajna A / Foley CA / Budziszewski GR / Azzam DN / James LI / Frye SV / McGinty RK
Funding support United States, 4 items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)R35GM133498 United States
National Institutes of Health/National Cancer Institute (NIH/NCI)F99CA253730 United States
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)R35GM139514 United States
National Institutes of Health/National Cancer Institute (NIH/NCI)R01CA010305 United States
CitationJournal: Nat Chem Biol / Year: 2023
Title: Structural basis of paralog-specific KDM2A/B nucleosome recognition.
Authors: Cathy J Spangler / Aleksandra Skrajna / Caroline A Foley / Anh Nguyen / Gabrielle R Budziszewski / Dalal N Azzam / Eyla C Arteaga / Holly C Simmons / Charlotte B Smith / Nathaniel A Wesley / ...Authors: Cathy J Spangler / Aleksandra Skrajna / Caroline A Foley / Anh Nguyen / Gabrielle R Budziszewski / Dalal N Azzam / Eyla C Arteaga / Holly C Simmons / Charlotte B Smith / Nathaniel A Wesley / Emily M Wilkerson / Jeanne-Marie E McPherson / Dmitri Kireev / Lindsey I James / Stephen V Frye / Dennis Goldfarb / Robert K McGinty /
Abstract: The nucleosome acidic patch is a major interaction hub for chromatin, providing a platform for enzymes to dock and orient for nucleosome-targeted activities. To define the molecular basis of acidic ...The nucleosome acidic patch is a major interaction hub for chromatin, providing a platform for enzymes to dock and orient for nucleosome-targeted activities. To define the molecular basis of acidic patch recognition proteome wide, we performed an amino acid resolution acidic patch interactome screen. We discovered that the histone H3 lysine 36 (H3K36) demethylase KDM2A, but not its closely related paralog, KDM2B, requires the acidic patch for nucleosome binding. Despite fundamental roles in transcriptional repression in health and disease, the molecular mechanisms governing nucleosome substrate specificity of KDM2A/B, or any related JumonjiC (JmjC) domain lysine demethylase, remain unclear. We used a covalent conjugate between H3K36 and a demethylase inhibitor to solve cryogenic electron microscopy structures of KDM2A and KDM2B trapped in action on a nucleosome substrate. Our structures show that KDM2-nucleosome binding is paralog specific and facilitated by dynamic nucleosomal DNA unwrapping and histone charge shielding that mobilize the H3K36 sequence for demethylation.
History
DepositionApr 29, 2022-
Header (metadata) releaseFeb 22, 2023-
Map releaseFeb 22, 2023-
UpdateJun 12, 2024-
Current statusJun 12, 2024Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_26809.png

Downloads & links

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Map

FileDownload / File: emd_26809.map.gz / Format: CCP4 / Size: 137.1 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationKDM2A-nucleosome complex stabilized by H3K36C-UNC8015 covalent conjugate
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
0.91 Å/pix.
x 330 pix.
= 300.3 Å		0.91 Å/pix.
x 330 pix.
= 300.3 Å		0.91 Å/pix.
x 330 pix.
= 300.3 Å

Surface

Projections

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Images are generated by Spider.

Voxel sizeX=Y=Z: 0.91 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.02
Minimum - Maximum-0.049175348 - 0.11990112
Average (Standard dev.)0.00014171597 (±0.0022619981)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions330330330
Spacing330330330
CellA=B=C: 300.30002 Å
α=β=γ: 90.0 °

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Supplemental data

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Additional map: KDM2A-nucleosome complex stabilized by H3K36C-UNC8015 covalent conjugate multibody...

Fileemd_26809_additional_1.map
AnnotationKDM2A-nucleosome complex stabilized by H3K36C-UNC8015 covalent conjugate multibody refinement nucleosome mask
Projections & Slices
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Half map: KDM2A-nucleosome complex stabilized by H3K36C-UNC8015 covalent conjugate half...

Fileemd_26809_half_map_1.map
AnnotationKDM2A-nucleosome complex stabilized by H3K36C-UNC8015 covalent conjugate half map 1
Projections & Slices
AxesZYX

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Slices (1/2)
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Histogram

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Half map: KDM2A-nucleosome complex stabilized by H3K36C-UNC8015 covalent conjugate half...

Fileemd_26809_half_map_2.map
AnnotationKDM2A-nucleosome complex stabilized by H3K36C-UNC8015 covalent conjugate half map 2
Projections & Slices
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Sample components

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Entire : KDM2A-nucleosome complex stabilized by H3K36C-UNC8015 covalent co...

EntireName: KDM2A-nucleosome complex stabilized by H3K36C-UNC8015 covalent conjugate
Components
  • Complex: KDM2A-nucleosome complex stabilized by H3K36C-UNC8015 covalent conjugate
    • Protein or peptide: Histone H3.2
    • Protein or peptide: Histone H4
    • Protein or peptide: Histone H2A type 1
    • Protein or peptide: Histone H2B type 1-C/E/F/G/I
    • DNA: DNA (185-MER)
    • DNA: DNA (185-MER)
    • Protein or peptide: Lysine-specific demethylase 2A
  • Ligand: N-heptanoyl-N-hydroxy-beta-alanine
  • Ligand: FE (III) ION

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Supramolecule #1: KDM2A-nucleosome complex stabilized by H3K36C-UNC8015 covalent co...

SupramoleculeName: KDM2A-nucleosome complex stabilized by H3K36C-UNC8015 covalent conjugate
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#7
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 310 KDa

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Macromolecule #1: Histone H3.2

MacromoleculeName: Histone H3.2 / type: protein_or_peptide / ID: 1 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 15.231801 KDa
Recombinant expressionOrganism: Escherichia coli BL21(DE3) (bacteria)
SequenceString:
ARTKQTARKS TGGKAPRKQL ATKAARKSAP ATGGVCKPHR YRPGTVALRE IRRYQKSTEL LIRKLPFQRL VREIAQDFKT DLRFQSSAV MALQEASEAY LVGLFEDTNL AAIHAKRVTI MPKDIQLARR IRGERA

UniProtKB: Histone H3.2

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Macromolecule #2: Histone H4

MacromoleculeName: Histone H4 / type: protein_or_peptide / ID: 2 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 11.263231 KDa
Recombinant expressionOrganism: Escherichia coli BL21(DE3) (bacteria)
SequenceString:
SGRGKGGKGL GKGGAKRHRK VLRDNIQGIT KPAIRRLARR GGVKRISGLI YEETRGVLKV FLENVIRDAV TYTEHAKRKT VTAMDVVYA LKRQGRTLYG FGG

UniProtKB: Histone H4

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Macromolecule #3: Histone H2A type 1

MacromoleculeName: Histone H2A type 1 / type: protein_or_peptide / ID: 3 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 13.990342 KDa
Recombinant expressionOrganism: Escherichia coli BL21(DE3) (bacteria)
SequenceString:
SGRGKQGGKA RAKAKTRSSR AGLQFPVGRV HRLLRKGNYA ERVGAGAPVY LAAVLEYLTA EILELAGNAA RDNKKTRIIP RHLQLAIRN DEELNKLLGK VTIAQGGVLP NIQAVLLPKK TESHHKAKGK

UniProtKB: Histone H2A type 1

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Macromolecule #4: Histone H2B type 1-C/E/F/G/I

MacromoleculeName: Histone H2B type 1-C/E/F/G/I / type: protein_or_peptide / ID: 4 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 13.806018 KDa
Recombinant expressionOrganism: Escherichia coli BL21(DE3) (bacteria)
SequenceString:
PEPAKSAPAP KKGSKKAVTK AQKKDGKKRK RSRKESYSVY VYKVLKQVHP DTGISSKAMG IMNSFVNDIF ERIAGEASRL AHYNKRSTI TSREIQTAVR LLLPGELAKH AVSEGTKAVT KYTSSK

UniProtKB: Histone H2B type 1-C/E/F/G/I

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Macromolecule #7: Lysine-specific demethylase 2A

MacromoleculeName: Lysine-specific demethylase 2A / type: protein_or_peptide / ID: 7 / Number of copies: 1 / Enantiomer: LEVO / EC number: [histone H3]-dimethyl-L-lysine36 demethylase
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 79.868062 KDa
Recombinant expressionOrganism: Escherichia coli BL21(DE3) (bacteria)
SequenceString: GSEPEEERIR YSQRLRGTMR RRYEDDGISD DEIEGKRTFD LEEKLHTNKY NANFVTFMEG KDFNVEYIQR GGLRDPLIFK NSDGLGIKM PDPDFTVNDV KMCVGSRRMV DVMDVNTQKG IEMTMAQWTR YYETPEEERE KLYNVISLEF SHTRLENMVQ R PSTVDFID ...String:
GSEPEEERIR YSQRLRGTMR RRYEDDGISD DEIEGKRTFD LEEKLHTNKY NANFVTFMEG KDFNVEYIQR GGLRDPLIFK NSDGLGIKM PDPDFTVNDV KMCVGSRRMV DVMDVNTQKG IEMTMAQWTR YYETPEEERE KLYNVISLEF SHTRLENMVQ R PSTVDFID WVDNMWPRHL KESQTESTNA ILEMQYPKVQ KYCLMSVRGC YTDFHVDFGG TSVWYHIHQG GKVFWLIPPT AH NLELYEN WLLSGKQGDI FLGDRVSDCQ RIELKQGYTF VIPSGWIHAV YTPTDTLVFG GNFLHSFNIP MQLKIYNIED RTR VPNKFR YPFYYEMCWY VLERYVYCIT NRSHLTKEFQ KESLSMDLEL NGLESGNGDE EAVDREPRRL SSRRSVLTSP VANG VNLDY DGLGKTCRSL PSLKKTLAGD SSSDCSRGSH NGQVWDPQCA PRKDRQVHLT HFELEGLRCL VDKLESLPLH KKCVP TGIE DEDALIADVK ILLEELANSD PKLALTGVPI VQWPKRDKLK FPTRPKVRVP TIPITKPHTM KPAPRLTPVR PAAASP IVS GARRRRVRCR KCKACVQGEC GVCHYCRDMK KFGGPGRMKQ SCVLRQCLAP RLPHSVTCSL CGEVDQNEET QDFEKKL ME CCICNEIVHP GCLQMDGEGL LNEELPNCWE CPKCYQEDSS EKAQHHHHHH

UniProtKB: Lysine-specific demethylase 2A

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Macromolecule #5: DNA (185-MER)

MacromoleculeName: DNA (185-MER) / type: dna / ID: 5 / Number of copies: 1 / Classification: DNA
Source (natural)Organism: synthetic construct (others)
Molecular weightTheoretical: 57.400559 KDa
SequenceString: (DA)(DT)(DC)(DG)(DC)(DT)(DG)(DT)(DT)(DC) (DA)(DA)(DT)(DA)(DC)(DA)(DT)(DG)(DC)(DA) (DC)(DA)(DG)(DG)(DA)(DT)(DG)(DT)(DA) (DT)(DA)(DT)(DA)(DT)(DC)(DT)(DG)(DA)(DC) (DA) (DC)(DG)(DT)(DG)(DC)(DC) ...String:
(DA)(DT)(DC)(DG)(DC)(DT)(DG)(DT)(DT)(DC) (DA)(DA)(DT)(DA)(DC)(DA)(DT)(DG)(DC)(DA) (DC)(DA)(DG)(DG)(DA)(DT)(DG)(DT)(DA) (DT)(DA)(DT)(DA)(DT)(DC)(DT)(DG)(DA)(DC) (DA) (DC)(DG)(DT)(DG)(DC)(DC)(DT)(DG) (DG)(DA)(DG)(DA)(DC)(DT)(DA)(DG)(DG)(DG) (DA)(DG) (DT)(DA)(DA)(DT)(DC)(DC)(DC) (DC)(DT)(DT)(DG)(DG)(DC)(DG)(DG)(DT)(DT) (DA)(DA)(DA) (DA)(DC)(DG)(DC)(DG)(DG) (DG)(DG)(DG)(DA)(DC)(DA)(DG)(DC)(DG)(DC) (DG)(DT)(DA)(DC) (DG)(DT)(DG)(DC)(DG) (DT)(DT)(DT)(DA)(DA)(DG)(DC)(DG)(DG)(DT) (DG)(DC)(DT)(DA)(DG) (DA)(DG)(DC)(DT) (DG)(DT)(DC)(DT)(DA)(DC)(DG)(DA)(DC)(DC) (DA)(DA)(DT)(DT)(DG)(DA) (DG)(DC)(DG) (DG)(DC)(DC)(DT)(DC)(DG)(DG)(DC)(DA)(DC) (DC)(DG)(DG)(DG)(DA)(DT)(DT) (DC)(DT) (DC)(DC)(DA)(DG)(DG)(DG)(DC)(DG)(DG)(DC) (DC)(DG)(DC)(DG)(DT)(DA)(DT)(DA) (DG) (DG)(DG)(DA)(DT)

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Macromolecule #6: DNA (185-MER)

MacromoleculeName: DNA (185-MER) / type: dna / ID: 6 / Number of copies: 1 / Classification: DNA
Source (natural)Organism: synthetic construct (others)
Molecular weightTheoretical: 56.831191 KDa
SequenceString: (DA)(DT)(DC)(DC)(DC)(DT)(DA)(DT)(DA)(DC) (DG)(DC)(DG)(DG)(DC)(DC)(DG)(DC)(DC)(DC) (DT)(DG)(DG)(DA)(DG)(DA)(DA)(DT)(DC) (DC)(DC)(DG)(DG)(DT)(DG)(DC)(DC)(DG)(DA) (DG) (DG)(DC)(DC)(DG)(DC)(DT) ...String:
(DA)(DT)(DC)(DC)(DC)(DT)(DA)(DT)(DA)(DC) (DG)(DC)(DG)(DG)(DC)(DC)(DG)(DC)(DC)(DC) (DT)(DG)(DG)(DA)(DG)(DA)(DA)(DT)(DC) (DC)(DC)(DG)(DG)(DT)(DG)(DC)(DC)(DG)(DA) (DG) (DG)(DC)(DC)(DG)(DC)(DT)(DC)(DA) (DA)(DT)(DT)(DG)(DG)(DT)(DC)(DG)(DT)(DA) (DG)(DA) (DC)(DA)(DG)(DC)(DT)(DC)(DT) (DA)(DG)(DC)(DA)(DC)(DC)(DG)(DC)(DT)(DT) (DA)(DA)(DA) (DC)(DG)(DC)(DA)(DC)(DG) (DT)(DA)(DC)(DG)(DC)(DG)(DC)(DT)(DG)(DT) (DC)(DC)(DC)(DC) (DC)(DG)(DC)(DG)(DT) (DT)(DT)(DT)(DA)(DA)(DC)(DC)(DG)(DC)(DC) (DA)(DA)(DG)(DG)(DG) (DG)(DA)(DT)(DT) (DA)(DC)(DT)(DC)(DC)(DC)(DT)(DA)(DG)(DT) (DC)(DT)(DC)(DC)(DA)(DG) (DG)(DC)(DA) (DC)(DG)(DT)(DG)(DT)(DC)(DA)(DG)(DA)(DT) (DA)(DT)(DA)(DT)(DA)(DC)(DA) (DT)(DC) (DC)(DT)(DG)(DT)(DG)(DC)(DA)(DT)(DG)(DT) (DA)(DT)(DT)(DG)(DA)(DA)(DC)(DA) (DG) (DC)(DG)(DA)(DT)

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Macromolecule #8: N-heptanoyl-N-hydroxy-beta-alanine

MacromoleculeName: N-heptanoyl-N-hydroxy-beta-alanine / type: ligand / ID: 8 / Number of copies: 1 / Formula: OH0
Molecular weightTheoretical: 217.262 Da
Chemical component information

ChemComp-OH0:
N-heptanoyl-N-hydroxy-beta-alanine

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Macromolecule #9: FE (III) ION

MacromoleculeName: FE (III) ION / type: ligand / ID: 9 / Number of copies: 1 / Formula: FE
Molecular weightTheoretical: 55.845 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

Concentration1 mg/mL
BufferpH: 7.5
Component:
ConcentrationFormulaName
10.0 mMC8H18N2O4SHEPES
30.0 mMNaClsodium chloride
GridModel: Quantifoil R1.2/1.3 / Material: COPPER / Pretreatment - Type: PLASMA CLEANING / Pretreatment - Time: 60 sec. / Details: Tergeo EM plasma cleaner
VitrificationCryogen name: ETHANE-PROPANE / Chamber humidity: 100 % / Chamber temperature: 277 K / Instrument: FEI VITROBOT MARK IV

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Electron microscopy

MicroscopeFEI TALOS ARCTICA
Image recordingFilm or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Number grids imaged: 1 / Number real images: 9075 / Average electron dose: 45.0 e/Å2
Electron beamAcceleration voltage: 200 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 3.0 µm / Nominal defocus min: 0.5 µm / Nominal magnification: 45000
Sample stageSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Experimental equipment
Model: Talos Arctica / Image courtesy: FEI Company

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Image processing

Particle selectionNumber selected: 2171614
Startup modelType of model: PDB ENTRY
PDB model - PDB ID:

7jo9

Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.2 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION (ver. 3.1) / Number images used: 55125
Initial angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: RELION (ver. 3.1)
Final angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: RELION (ver. 3.1)
FSC plot (resolution estimation)

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Atomic model buiding 1

Initial modelPDB ID:

7jo9


Chain - Source name: PDB / Chain - Initial model type: experimental model
RefinementSpace: REAL
Output model

PDB-7uv9:
KDM2A-nucleosome structure stabilized by H3K36C-UNC8015 covalent conjugate

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