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- PDB-8c60: Cryo-EM structure of the human SIN3B full-length complex at 3.4 A... -
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Basic information
Entry | Database: PDB / ID: 8c60 | ||||||
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Title | Cryo-EM structure of the human SIN3B full-length complex at 3.4 Angstrom resolution | ||||||
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![]() | HYDROLASE / Chromatin / Histone deacetylase / HDAC | ||||||
Function / homology | ![]() autosome / positive regulation of male mating behavior / protein de-2-hydroxyisobutyrylase activity / protein lysine delactylase activity / p75NTR negatively regulates cell cycle via SC1 / epidermal cell differentiation / negative regulation of dendritic spine development / histone decrotonylase activity / fungiform papilla formation / negative regulation of MHC class II biosynthetic process ...autosome / positive regulation of male mating behavior / protein de-2-hydroxyisobutyrylase activity / protein lysine delactylase activity / p75NTR negatively regulates cell cycle via SC1 / epidermal cell differentiation / negative regulation of dendritic spine development / histone decrotonylase activity / fungiform papilla formation / negative regulation of MHC class II biosynthetic process / behavioral response to ethanol / positive regulation of interleukin-1 production / NuRD complex / regulation of cell fate specification / negative regulation of transcription by competitive promoter binding / EGR2 and SOX10-mediated initiation of Schwann cell myelination / negative regulation of stem cell population maintenance / histone H4K16 deacetylase activity, hydrolytic mechanism / ESC/E(Z) complex / histone H4K5 deacetylase activity, hydrolytic mechanism / histone H4K8 deacetylase activity, hydrolytic mechanism / histone H3K4 deacetylase activity, hydrolytic mechanism / histone H3K14 deacetylase activity, hydrolytic mechanism / XY body / histone H4K12 deacetylase activity, hydrolytic mechanism / histone deacetylase / regulation of stem cell differentiation / cellular response to dopamine / regulation of double-strand break repair / cardiac muscle hypertrophy / STAT3 nuclear events downstream of ALK signaling / histone H3K9 deacetylase activity, hydrolytic mechanism / response to caffeine / protein lysine deacetylase activity / Hydrolases; Acting on carbon-nitrogen bonds, other than peptide bonds; In linear amides / embryonic digit morphogenesis / histone deacetylase activity / positive regulation of intracellular estrogen receptor signaling pathway / Notch-HLH transcription pathway / Y chromosome / NuA4 histone acetyltransferase complex / X chromosome / Sin3-type complex / eyelid development in camera-type eye / positive regulation of stem cell population maintenance / dendrite development / odontogenesis of dentin-containing tooth / response to amyloid-beta / positive regulation of proteolysis / RNA Polymerase I Transcription Initiation / histone deacetylase complex / positive regulation of oligodendrocyte differentiation / Regulation of MECP2 expression and activity / positive regulation of collagen biosynthetic process / hair follicle placode formation / response to hyperoxia / NF-kappaB binding / FOXO-mediated transcription of oxidative stress, metabolic and neuronal genes / positive regulation of double-strand break repair via homologous recombination / progesterone receptor signaling pathway / positive regulation of epithelial to mesenchymal transition / Transcriptional regulation of brown and beige adipocyte differentiation by EBF2 / MECP2 regulates neuronal receptors and channels / cellular response to transforming growth factor beta stimulus / cellular response to retinoic acid / Regulation of TP53 Activity through Acetylation / heat shock protein binding / Regulation of lipid metabolism by PPARalpha / transcription repressor complex / response to amphetamine / phosphatidylinositol binding / SUMOylation of chromatin organization proteins / negative regulation of cell migration / ERCC6 (CSB) and EHMT2 (G9a) positively regulate rRNA expression / Regulation of PTEN gene transcription / transcription corepressor binding / Regulation of endogenous retroelements by KRAB-ZFP proteins / Regulation of endogenous retroelements by Piwi-interacting RNAs (piRNAs) / HDACs deacetylate histones / negative regulation of DNA-binding transcription factor activity / response to nicotine / promoter-specific chromatin binding / negative regulation of transforming growth factor beta receptor signaling pathway / circadian regulation of gene expression / response to cocaine / RUNX1 regulates genes involved in megakaryocyte differentiation and platelet function / double-strand break repair via homologous recombination / NoRC negatively regulates rRNA expression / Cytoprotection by HMOX1 / protein modification process / NOTCH1 Intracellular Domain Regulates Transcription / cellular response to hydrogen peroxide / Constitutive Signaling by NOTCH1 PEST Domain Mutants / Constitutive Signaling by NOTCH1 HD+PEST Domain Mutants / histone deacetylase binding / transcription corepressor activity / positive regulation of tumor necrosis factor production / nucleosome / heterochromatin formation / chromatin organization Similarity search - Function | ||||||
Biological species | ![]() | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.4 Å | ||||||
![]() | Alfieri, C. / Wan, S.M. / Muhammad, R. | ||||||
Funding support | ![]()
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![]() | ![]() Title: Mechanism of assembly, activation and lysine selection by the SIN3B histone deacetylase complex. Authors: Mandy S M Wan / Reyhan Muhammad / Marios G Koliopoulos / Theodoros I Roumeliotis / Jyoti S Choudhary / Claudio Alfieri / ![]() Abstract: Lysine acetylation in histone tails is a key post-translational modification that controls transcription activation. Histone deacetylase complexes remove histone acetylation, thereby repressing ...Lysine acetylation in histone tails is a key post-translational modification that controls transcription activation. Histone deacetylase complexes remove histone acetylation, thereby repressing transcription and regulating the transcriptional output of each gene. Although these complexes are drug targets and crucial regulators of organismal physiology, their structure and mechanisms of action are largely unclear. Here, we present the structure of a complete human SIN3B histone deacetylase holo-complex with and without a substrate mimic. Remarkably, SIN3B encircles the deacetylase and contacts its allosteric basic patch thereby stimulating catalysis. A SIN3B loop inserts into the catalytic tunnel, rearranges to accommodate the acetyl-lysine moiety, and stabilises the substrate for specific deacetylation, which is guided by a substrate receptor subunit. Our findings provide a model of specificity for a main transcriptional regulator conserved from yeast to human and a resource of protein-protein interactions for future drug designs. | ||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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PDBx/mmCIF format | ![]() | 304.8 KB | Display | ![]() |
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PDB format | ![]() | 220.5 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 16449MC ![]() 8bpaC ![]() 8bpbC ![]() 8bpcC M: map data used to model this data C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
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Assembly
Deposited unit | ![]()
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Components
-Protein , 4 types, 4 molecules ABCD
#1: Protein | Mass: 129547.133 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
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#2: Protein | Mass: 55443.156 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() References: UniProt: Q92769, histone deacetylase, Hydrolases; Acting on carbon-nitrogen bonds, other than peptide bonds; In linear amides |
#3: Protein | Mass: 109841.586 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
#4: Protein | Mass: 41540.484 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
-Non-polymers , 2 types, 7 molecules 


#5: Chemical | ChemComp-ZN / #6: Chemical | |
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-Details
Has ligand of interest | Y |
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-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
Component | Name: Human SIN3B complex / Type: COMPLEX / Entity ID: #1-#4 / Source: RECOMBINANT |
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Molecular weight | Value: 0.385 MDa / Experimental value: NO |
Source (natural) | Organism: ![]() |
Source (recombinant) | Organism: ![]() |
Buffer solution | pH: 7.5 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Vitrification | Cryogen name: ETHANE |
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Electron microscopy imaging
Microscopy | Model: TFS GLACIOS |
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Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 1600 nm / Nominal defocus min: 600 nm |
Image recording | Electron dose: 60 e/Å2 / Film or detector model: FEI FALCON IV (4k x 4k) |
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Processing
Software | Name: PHENIX / Version: 1.20.1_4487: / Classification: refinement | ||||||||||||||||||||||||
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
3D reconstruction | Resolution: 3.4 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 38352 / Symmetry type: POINT | ||||||||||||||||||||||||
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