4c67

Discovery of Epigenetic Regulator I-BET762: Lead Optimization to Afford a Clinical Candidate Inhibitor of the BET Bromodomains

Method: X-RAY DIFFRACTION Dmax: 55.8 Å Quality: GOOD

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

BROMODOMAIN-CONTAINING PROTEIN 4

HOMO SAPIENS

UniProt O60885

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 monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain A; UniProt 44–168 Fragment:N-TERMINAL BROMODOMAIN, RESIDUES 44-168 L5S 13-methyl-7-phenyl-3-thia-1,8,11,12-tetraazatricyclo trideca-2(6),4,7,10,12-pentaene × 1 EDO 1,2-ETHANEDIOL × 2 X-RAY DIFFRACTION X-ray crystallization conditions:pH 6.5;0.2M CACL2, 0.1M MES PH6.5, 20% PEG6000 Resolution 1.55 Å R-free 0.186

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.

601 other PDB entries and 778 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name BRD4_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 3–127; UniProt 44–168

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 4c67

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 4c67
Download Download

2. Structure Basics 2. Structure Basics

Entry ID entry_id4c67
Deposition date deposition_date2013-09-17
Structure title titleDiscovery of Epigenetic Regulator I-BET762: Lead Optimization to Afford a Clinical Candidate Inhibitor of the BET Bromodomains
Keywords keywordsCELL CYCLE, HISTONE, EPIGENETIC READER BRD4, BROMODOMAIN CONTAINING PROTEIN 4, ANTAGONIST; CELL CYCLE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier16.20
Radius of gyration Rg (electron density) rg_electron15.07
Forward intensity I(0) i04392070.00
Molecular weight molecular_weight15489.0 kDa
Excluded volume excluded_volume19602 ų
Envelope volume envelope_volume22227 ų
Hydration-shell volume shell_volume12688 ų
Envelope diameter envelope_diameter53.4
Shell Rg shell_rg20.53
Envelope Rg envelope_rg15.56
Shape Rg shape_rg15.05
Total Rg total_rg16.22
Total atoms total_atoms1090
Residues n_residues127
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 dmax55.8
Rg (real space) rg_real16.17
Rg uncertainty (real space) rg_real_error0.31
I(0) (real space) i0_real4.3920e+06
I(0) uncertainty (real space) i0_real_error4.6990e+04
Rg (reciprocal space) rg_reciprocal16.17
I(0) (reciprocal space) i0_reciprocal4392000.0000
Solution quality estimate total_estimate0.8668
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary18.6
Skewness Skewness skewness0.311
Kurtosis Kurtosis kurtosis-0.275
Angular range angular_range— – 0.4900 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha1196000.0000
Real-space data points n_real_points79
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.759; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.991; Smooth: 0.997

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (4)

7. Fold Classification (SCOP + CATH) 3 domains

SCOP 2.08 (2 domains)

Domain ID domain_idd4c67a1
Class classa — All alpha proteins
Fold Fold folda.29 — Bromodomain-like
Superfamily Superfamily superfamilya.29.2 — Bromodomain
Family Family familya.29.2.0 — automated matches
Domain ID domain_idd4c67a2
Class classl — Artifacts
Fold Fold foldl.1 — Tags
Superfamily Superfamily superfamilyl.1.1 — Tags
Family Family familyl.1.1.1 — Tags

CATH v4.4 (1 domains)

Domain ID domain_id4c67A01
Class class1 — Mainly Alpha
Architecture architecture20 — Up-down Bundle
Topology topology920 — Histone Acetyltransferase; Chain A
Homologous superfamily homologous superfamily10 — Bromodomain-like

8. Citations (1)

9. Files and Curves (10)