8bpc

Cryo-EM structure of the human SIN3B histone deacetylase core complex with SAHA at 2.8 Angstrom

Method: ELECTRON MICROSCOPY Dmax: 119.3 Å Quality: GOOD

1. Protein Identity and Related Structures Protein Identity & Related Structures

Isoform 2 of Paired amphipathic helix protein Sin3b

Homo sapiens

UniProt O75182

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Protein heterocomplex Heteromer Protein × 3 PDB declaration: trimeric(3) Consistent with protein copy count Chain A; UniProt 1–1130 Not recorded Histone deacetylase 2 × 1 (Q92769) PHD finger protein 12 × 1 (Q96QT6) SHH OCTANEDIOIC ACID HYDROXYAMIDE PHENYLAMIDE × 1 ZN ZINC ION × 3 CA CALCIUM ION × 2 ELECTRON MICROSCOPY cryo-EM buffer:pH 7.5 cryo-EM vitrification conditions:Cryogen ETHANE Resolution 2.80 Å

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

3 other PDB entries and 3 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name SIN3B_HUMAN
Isoform O75182-2
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–1130; UniProt 1–1130

Histone deacetylase 2

Homo sapiens

UniProt Q92769

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Protein heterocomplex Heteromer Protein × 3 PDB declaration: trimeric(3) Consistent with protein copy count Chain B; UniProt 1–488 Not recorded Isoform 2 of Paired amphipathic helix protein Sin3b × 1 (O75182) PHD finger protein 12 × 1 (Q96QT6) SHH OCTANEDIOIC ACID HYDROXYAMIDE PHENYLAMIDE × 1 ZN ZINC ION × 3 CA CALCIUM ION × 2 ELECTRON MICROSCOPY cryo-EM buffer:pH 7.5 cryo-EM vitrification conditions:Cryogen ETHANE Resolution 2.80 Å

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

47 other PDB entries and 122 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name HDAC2_HUMAN
Isoform
PDB entities 2
Chains and sequence ranges Author chain B; PDBConstruct 1–488; UniProt 1–488

PHD finger protein 12

Homo sapiens

UniProt Q96QT6

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Protein heterocomplex Heteromer Protein × 3 PDB declaration: trimeric(3) Consistent with protein copy count Chain C; UniProt 1–256 Chain C; UniProt 257–364 Not recorded Isoform 2 of Paired amphipathic helix protein Sin3b × 1 (O75182) Histone deacetylase 2 × 1 (Q92769) SHH OCTANEDIOIC ACID HYDROXYAMIDE PHENYLAMIDE × 1 ZN ZINC ION × 3 CA CALCIUM ION × 2 ELECTRON MICROSCOPY cryo-EM buffer:pH 7.5 cryo-EM vitrification conditions:Cryogen ETHANE Resolution 2.80 Å

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

5 other PDB entries and 5 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name PHF12_HUMAN
Isoform
PDB entities 3
Chains and sequence ranges Author chain C; PDBConstruct 1–256; UniProt 1–256 Author chain C; PDBConstruct 257–364; UniProt 257–364

The page prioritizes protein identity, the current assembly, associated components, oligomeric state and cross-PDB links. Chain mapping and sequence ranges are retained as data evidence. Internal IDs, import timestamps and assembly operation expressions are maintenance fields and are not shown here.

SAXS scattering curve SAXS Profile

SAXS profile for 8bpc

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 8bpc
Download Download

2. Structure Basics 2. Structure Basics

Entry ID entry_id8bpc
Deposition date deposition_date2022-11-16
Structure title titleCryo-EM structure of the human SIN3B histone deacetylase core complex with SAHA at 2.8 Angstrom
Keywords keywordsHDAC, Chromatin, Cell cycle, transcription, GENE REGULATION; GENE REGULATION
Experimental Method methodELECTRON MICROSCOPY

3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

Radius of gyration Rg (Guinier) rg_guinier35.60
Radius of gyration Rg (electron density) rg_electron35.26
Forward intensity I(0) i0220294000.00
Molecular weight molecular_weight119450.0 kDa
Excluded volume excluded_volume149470 ų
Envelope volume envelope_volume200180 ų
Hydration-shell volume shell_volume47945 ų
Envelope diameter envelope_diameter129.1
Shell Rg shell_rg41.16
Envelope Rg envelope_rg35.05
Shape Rg shape_rg35.27
Total Rg total_rg35.67
Total atoms total_atoms8389
Residues n_residues1030
Spherical-harmonic order n_harmonics20
q range q_range— – 0.5000 −1
Data points n_points101
Shell type shell_typedirectional
Solvent electron density solvent_density0.3340 e/ų
Shell contrast contrast_shell0.0300 e/ų
CRYSOL version crysol_version4.1.3

4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

Maximum dimension Dmax dmax119.3
Rg (real space) rg_real35.62
Rg uncertainty (real space) rg_real_error0.89
I(0) (real space) i0_real2.2030e+08
I(0) uncertainty (real space) i0_real_error3.8190e+06
Rg (reciprocal space) rg_reciprocal35.61
I(0) (reciprocal space) i0_reciprocal220300000.0000
Solution quality estimate total_estimate0.8855
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary38.0
Skewness Skewness skewness0.351
Kurtosis Kurtosis kurtosis-0.342
Angular range angular_range— – 0.2200 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha47640000.0000
Real-space data points n_real_points45
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.875; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.980; Smooth: 0.904

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (7)

8. Citations (1)

9. Files and Curves (10)