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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


NAD-dependent histone H3K56 deacetylase activity / NAD-dependent histone H3K18 deacetylase activity / ketone biosynthetic process / NAD-dependent histone H3K9 deacetylase activity / protein delipidation / regulation of lipid catabolic process / NAD+- protein-lysine ADP-ribosyltransferase activity / NAD-dependent protein demyristoylase activity / NAD-dependent protein depalmitoylase activity / chromosome, subtelomeric region ...NAD-dependent histone H3K56 deacetylase activity / NAD-dependent histone H3K18 deacetylase activity / ketone biosynthetic process / NAD-dependent histone H3K9 deacetylase activity / protein delipidation / regulation of lipid catabolic process / NAD+- protein-lysine ADP-ribosyltransferase activity / NAD-dependent protein demyristoylase activity / NAD-dependent protein depalmitoylase activity / chromosome, subtelomeric region / pericentric heterochromatin formation / NAD+-protein-arginine ADP-ribosyltransferase activity / positive regulation of protein localization to chromatin / DNA damage sensor activity / positive regulation of stem cell differentiation / positive regulation of blood vessel branching / retrotransposon silencing / NAD-dependent protein lysine deacetylase activity / protein localization to site of double-strand break / cardiac muscle cell differentiation / protein acetyllysine N-acetyltransferase / NAD-dependent histone deacetylase activity / positive regulation of chondrocyte proliferation / positive regulation of telomere maintenance / protein deacetylation / negative regulation of glucose import / TORC2 complex binding / lncRNA binding / negative regulation of glycolytic process / DNA repair-dependent chromatin remodeling / negative regulation of protein localization to chromatin / positive regulation of double-strand break repair / positive regulation of vascular endothelial cell proliferation / negative regulation of gene expression, epigenetic / regulation of double-strand break repair via homologous recombination / negative regulation of protein import into nucleus / positive regulation of stem cell population maintenance / positive regulation of stem cell proliferation / regulation of protein secretion / negative regulation of transcription elongation by RNA polymerase II / site of DNA damage / NAD+-protein ADP-ribosyltransferase activity / negative regulation of cellular senescence / subtelomeric heterochromatin formation / regulation of lipid metabolic process / NAD+ ADP-ribosyltransferase activity / Transferases; Glycosyltransferases; Pentosyltransferases / nucleosome binding / NAD+ binding / positive regulation of fat cell differentiation / negative regulation of gluconeogenesis / regulation of protein localization to plasma membrane / pericentric heterochromatin / response to UV / Transferases; Acyltransferases; Transferring groups other than aminoacyl groups / nucleotidyltransferase activity / positive regulation of protein export from nucleus / determination of adult lifespan / base-excision repair / circadian regulation of gene expression / protein destabilization / regulation of circadian rhythm / positive regulation of insulin secretion / chromatin DNA binding / Pre-NOTCH Transcription and Translation / structural constituent of chromatin / transcription corepressor activity / double-strand break repair / positive regulation of fibroblast proliferation / nucleosome / positive regulation of proteasomal ubiquitin-dependent protein catabolic process / glucose homeostasis / 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 / negative regulation of transcription by RNA polymerase II / endoplasmic reticulum / 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 H2B / Histone H2B / 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 H2B / Histone H2B / Histone H2A conserved site / Histone H2A signature. / Histone H2A, C-terminal domain / C-terminus of histone H2A / Histone H2A / Histone 2A / Histone H4, conserved site / Histone H4 signature. / Histone H4 / Histone H4 / 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 / Histone H3 signature 1. / Histone H3 signature 2. / Histone H3 / Histone H3/CENP-A / Histone H2A/H2B/H3 / Core histone H2A/H2B/H3/H4 / 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
Revision 1.1Mar 13, 2024Group: Data collection / Source and taxonomy / Category: chem_comp_atom / chem_comp_bond / entity_src_gen

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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
Water0
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

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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 FIELDBright-field microscopy / 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
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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