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- PDB-8f86: SIRT6 bound to an H3K9Ac nucleosome -

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Basic information

Entry
Database: PDB / ID: 8f86
TitleSIRT6 bound to an H3K9Ac nucleosome
Components
  • (DNA (148-MER)) x 2
  • Histone H2A type 1
  • Histone H2B
  • Histone H3.2
  • Histone H4
  • NAD-dependent protein deacylase sirtuin-6
KeywordsGENE REGULATION / nucleosome / SIRTUIN6 / histone deacylation / H3K9Ac
Function / homology
Function and homology information


histone H3K56 deacetylase activity, NAD-dependent / histone H3K18 deacetylase activity, NAD-dependent / ketone biosynthetic process / histone H3K9 deacetylase activity, hydrolytic mechanism / histone H3K9 deacetylase activity, NAD-dependent / protein delipidation / NAD+-protein-lysine ADP-ribosyltransferase activity / regulation of lipid catabolic process / chromosome, subtelomeric region / positive regulation of protein localization to chromatin ...histone H3K56 deacetylase activity, NAD-dependent / histone H3K18 deacetylase activity, NAD-dependent / ketone biosynthetic process / histone H3K9 deacetylase activity, hydrolytic mechanism / histone H3K9 deacetylase activity, NAD-dependent / protein delipidation / NAD+-protein-lysine ADP-ribosyltransferase activity / regulation of lipid catabolic process / chromosome, subtelomeric region / positive regulation of protein localization to chromatin / NAD+-protein-arginine ADP-ribosyltransferase activity / DNA damage sensor activity / NAD-dependent protein demyristoylase activity / NAD-dependent protein depalmitoylase activity / positive regulation of stem cell differentiation / negative regulation of D-glucose import / positive regulation of chondrocyte proliferation / transposable element silencing / NAD-dependent protein lysine deacetylase activity / cardiac muscle cell differentiation / protein acetyllysine N-acetyltransferase / pericentric heterochromatin formation / protein deacetylation / histone deacetylase activity, NAD-dependent / protein localization to site of double-strand break / positive regulation of blood vessel branching / negative regulation of glycolytic process / TORC2 complex binding / negative regulation of protein localization to chromatin / positive regulation of vascular endothelial cell proliferation / histone deacetylase regulator activity / negative regulation of protein import into nucleus / regulation of double-strand break repair via homologous recombination / regulation of protein secretion / positive regulation of double-strand break repair / DNA repair-dependent chromatin remodeling / positive regulation of stem cell proliferation / lncRNA binding / negative regulation of gene expression, epigenetic / NAD+-protein mono-ADP-ribosyltransferase activity / positive regulation of stem cell population maintenance / positive regulation of telomere maintenance / regulation of lipid metabolic process / site of DNA damage / negative regulation of cellular senescence / negative regulation of transcription elongation by RNA polymerase II / Transferases; Glycosyltransferases; Pentosyltransferases / NAD+ poly-ADP-ribosyltransferase activity / NAD+ binding / negative regulation of gluconeogenesis / positive regulation of fat cell differentiation / subtelomeric heterochromatin formation / pericentric heterochromatin / response to UV / regulation of protein localization to plasma membrane / nucleosome binding / enzyme regulator activity / Transferases; Acyltransferases; Transferring groups other than aminoacyl groups / nucleotidyltransferase activity / positive regulation of protein export from nucleus / determination of adult lifespan / circadian regulation of gene expression / base-excision repair / regulation of circadian rhythm / positive regulation of insulin secretion / protein destabilization / chromatin DNA binding / Pre-NOTCH Transcription and Translation / positive regulation of fibroblast proliferation / protein import into nucleus / structural constituent of chromatin / transcription corepressor activity / positive regulation of proteasomal ubiquitin-dependent protein catabolic process / nucleosome / heterochromatin formation / glucose homeostasis / double-strand break repair / nucleosome assembly / site of double-strand break / positive regulation of cold-induced thermogenesis / Processing of DNA double-strand break ends / damaged DNA binding / chromatin remodeling / protein heterodimerization activity / negative regulation of cell population proliferation / intracellular membrane-bounded organelle / chromatin binding / chromatin / endoplasmic reticulum / negative regulation of transcription by RNA polymerase II / protein homodimerization activity / DNA binding / zinc ion binding / nucleoplasm / nucleus
Similarity search - Function
Sirtuin family / : / Sir2 family / Sirtuin family, catalytic core domain / Sirtuin catalytic domain profile. / DHS-like NAD/FAD-binding domain superfamily / : / Histone H2B signature. / Histone H2A conserved site / Histone H2A signature. ...Sirtuin family / : / Sir2 family / Sirtuin family, catalytic core domain / Sirtuin catalytic domain profile. / DHS-like NAD/FAD-binding domain superfamily / : / Histone H2B signature. / Histone H2A conserved site / Histone H2A signature. / Histone H2B / Histone H2B / Histone H2A, C-terminal domain / C-terminus of histone H2A / Histone 2A / Histone H2A / TATA box binding protein associated factor / TATA box binding protein associated factor (TAF), histone-like fold domain / Histone H4, conserved site / Histone H4 signature. / Histone H4 / Histone H4 / CENP-T/Histone H4, histone fold / Centromere kinetochore component CENP-T histone fold / Histone H3 signature 1. / Histone H3 signature 2. / Histone H3 / Histone H3/CENP-A / Histone H2A/H2B/H3 / Core histone H2A/H2B/H3/H4 domain / Histone-fold
Similarity search - Domain/homology
Chem-ZSL / DNA / DNA (> 10) / DNA (> 100) / Histone H2B 1.1 / Histone H2A type 1 / Histone H4 / Histone H3.2 / NAD-dependent protein deacylase sirtuin-6
Similarity search - Component
Biological speciesXenopus laevis (African clawed frog)
synthetic construct (others)
Homo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.1 Å
AuthorsMarkert, J. / Whedon, S. / Wang, Z. / Cole, P. / Farnung, L.
Funding support1items
OrganizationGrant numberCountry
Not funded
CitationJournal: J Am Chem Soc / Year: 2023
Title: Structural Basis of Sirtuin 6-Catalyzed Nucleosome Deacetylation.
Authors: Zhipeng A Wang / Jonathan W Markert / Samuel D Whedon / Maheeshi Yapa Abeywardana / Kwangwoon Lee / Hanjie Jiang / Carolay Suarez / Hening Lin / Lucas Farnung / Philip A Cole /
Abstract: The reversible acetylation of histone lysine residues is controlled by the action of acetyltransferases and deacetylases (HDACs), which regulate chromatin structure and gene expression. The sirtuins ...The reversible acetylation of histone lysine residues is controlled by the action of acetyltransferases and deacetylases (HDACs), which regulate chromatin structure and gene expression. The sirtuins are a family of NAD-dependent HDAC enzymes, and one member, sirtuin 6 (Sirt6), influences DNA repair, transcription, and aging. Here, we demonstrate that Sirt6 is efficient at deacetylating several histone H3 acetylation sites, including its canonical site Lys9, in the context of nucleosomes but not free acetylated histone H3 protein substrates. By installing a chemical warhead at the Lys9 position of histone H3, we trap a catalytically poised Sirt6 in complex with a nucleosome and employ this in cryo-EM structural analysis. The structure of Sirt6 bound to a nucleosome reveals extensive interactions between distinct segments of Sirt6 and the H2A/H2B acidic patch and nucleosomal DNA, which accounts for the rapid deacetylation of nucleosomal H3 sites and the disfavoring of histone H2B acetylation sites. These findings provide a new framework for understanding how HDACs target and regulate chromatin.
History
DepositionNov 21, 2022Deposition site: RCSB / Processing site: RCSB
Revision 1.0Apr 5, 2023Provider: repository / Type: Initial release
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Revision 1.1Mar 13, 2024Group: Data collection / Source and taxonomy / Category: chem_comp_atom / chem_comp_bond / entity_src_gen
Revision 1.2Oct 23, 2024Group: Data collection / Structure summary
Category: em_admin / pdbx_entry_details / pdbx_modification_feature
Item: _em_admin.last_update / _pdbx_entry_details.has_protein_modification
Revision 1.3May 21, 2025Group: Data collection / Category: em_admin / em_software / Item: _em_admin.last_update / _em_software.name
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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Histone H3.2
B: Histone H4
C: Histone H2A type 1
D: Histone H2B
E: Histone H3.2
F: Histone H4
G: Histone H2A type 1
H: Histone H2B
I: DNA (148-MER)
J: DNA (148-MER)
K: NAD-dependent protein deacylase sirtuin-6
hetero molecules


Theoretical massNumber of molelcules
Total (without water)262,11413
Polymers261,46111
Non-polymers6532
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: gel filtration
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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Protein , 5 types, 9 molecules AEBFCGDHK

#1: Protein Histone H3.2


Mass: 15271.863 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Xenopus laevis (African clawed frog) / Production host: Escherichia coli (E. coli) / References: UniProt: P84233
#2: Protein Histone H4


Mass: 11263.231 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Xenopus laevis (African clawed frog) / Production host: Escherichia coli (E. coli) / References: UniProt: P62799
#3: Protein Histone H2A type 1


Mass: 13978.241 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Xenopus laevis (African clawed frog) / Production host: Escherichia coli (E. coli) / References: UniProt: P06897
#4: Protein Histone H2B / H2B1.1


Mass: 13524.752 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Xenopus laevis (African clawed frog) / Production host: Escherichia coli (E. coli) / References: UniProt: P02281
#7: Protein NAD-dependent protein deacylase sirtuin-6 / NAD-dependent protein deacetylase sirtuin-6 / Protein mono-ADP-ribosyltransferase sirtuin-6 / ...NAD-dependent protein deacetylase sirtuin-6 / Protein mono-ADP-ribosyltransferase sirtuin-6 / Regulatory protein SIR2 homolog 6 / hSIRT6 / SIR2-like protein 6


Mass: 39152.863 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: SIRT6, SIR2L6 / Production host: Escherichia coli (E. coli)
References: UniProt: Q8N6T7, Transferases; Acyltransferases; Transferring groups other than aminoacyl groups, protein acetyllysine N-acetyltransferase, Transferases; Glycosyltransferases; Pentosyltransferases

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DNA chain , 2 types, 2 molecules IJ

#5: DNA chain DNA (148-MER)


Mass: 57400.559 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) synthetic construct (others) / Production host: Escherichia coli (E. coli)
#6: DNA chain DNA (148-MER)


Mass: 56831.191 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) synthetic construct (others) / Production host: Escherichia coli (E. coli)

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Non-polymers , 2 types, 2 molecules

#8: Chemical ChemComp-ZSL / [(2R,3S,4R,5R)-5-(6-amino-9H-purin-9-yl)-3,4-dihydroxyoxolan-2-yl]methyl [(3aR,5R,6R,6aR)-6-hydroxytetrahydro-2H-furo[2,3-d][1,3]oxathiol-5-yl]methyl dihydrogen diphosphate (non-preferred name)


Mass: 587.392 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C16H23N5O13P2S / Feature type: SUBJECT OF INVESTIGATION
#9: Chemical ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Zn / Feature type: SUBJECT OF INVESTIGATION

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Details

Has ligand of interestY
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: SIRT6 bound to H3K9Ac / Type: COMPLEX / Entity ID: #1-#7 / Source: MULTIPLE SOURCES
Molecular weightExperimental value: NO
Buffer solutionpH: 7.5
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: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: OTHER
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 1700 nm / Nominal defocus min: 700 nm
Image recordingElectron dose: 50.45 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k)

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Processing

SoftwareName: PHENIX / Version: 1.20.1_4487: / Classification: refinement
EM softwareName: PHENIX / Category: model refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3.1 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 95205 / Symmetry type: POINT
Atomic model buildingProtocol: RIGID BODY FIT / Space: REAL
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00415264
ELECTRON MICROSCOPYf_angle_d0.63121903
ELECTRON MICROSCOPYf_dihedral_angle_d29.0684150
ELECTRON MICROSCOPYf_chiral_restr0.0562495
ELECTRON MICROSCOPYf_plane_restr0.0051751

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