6yik

Crystal structure of the CREBBP bromodomain in complex with a tetrahydroquinoxaline ligand

Method: X-RAY DIFFRACTION Dmax: 84.6 Å Quality: GOOD

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

CREBBP

Homo sapiens

UniProt Q92793

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 1081–1197 Not recorded OSQ (3~{R})-~{N}-[3-(3,4-dihydro-2~{H}-quinolin-1-yl)-2,2-bis(fluoranyl)propyl]-3-methyl-2-oxidanylidene-3,4-dihydro-1~{H}-quinoxaline-5-carboxamide × 2 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 7.5;277 K;21% PEG3350 15% ethylene glycol 0.25M sodium formate Resolution 1.70 Å R-free 0.184
2 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain B; UniProt 1081–1197 Not recorded OSQ (3~{R})-~{N}-[3-(3,4-dihydro-2~{H}-quinolin-1-yl)-2,2-bis(fluoranyl)propyl]-3-methyl-2-oxidanylidene-3,4-dihydro-1~{H}-quinoxaline-5-carboxamide × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 7.5;277 K;21% PEG3350 15% ethylene glycol 0.25M sodium formate Resolution 1.70 Å R-free 0.184
3 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain C; UniProt 1081–1197 Not recorded OSQ (3~{R})-~{N}-[3-(3,4-dihydro-2~{H}-quinolin-1-yl)-2,2-bis(fluoranyl)propyl]-3-methyl-2-oxidanylidene-3,4-dihydro-1~{H}-quinoxaline-5-carboxamide × 2 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 7.5;277 K;21% PEG3350 15% ethylene glycol 0.25M sodium formate Resolution 1.70 Å R-free 0.184

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.

135 other PDB entries and 222 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name CBP_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 3–119; UniProt 1081–1197 Author chain B; PDBConstruct 3–119; UniProt 1081–1197 Author chain C; PDBConstruct 3–119; UniProt 1081–1197

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 6yik

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 6yik
Download Download

2. Structure Basics 2. Structure Basics

Entry ID entry_id6yik
Deposition date deposition_date2020-04-01
Structure title titleCrystal structure of the CREBBP bromodomain in complex with a tetrahydroquinoxaline ligand
Keywords keywordsBromodomain, CREBBP, small molecule, benzo-diazepine, SGC, Structural Genomics Consortium, TRANSCRIPTION; TRANSCRIPTION
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier27.28
Radius of gyration Rg (electron density) rg_electron26.79
Forward intensity I(0) i027358900.00
Molecular weight molecular_weight42399.0 kDa
Excluded volume excluded_volume53831 ų
Envelope volume envelope_volume67361 ų
Hydration-shell volume shell_volume22218 ų
Envelope diameter envelope_diameter90.8
Shell Rg shell_rg32.17
Envelope Rg envelope_rg26.69
Shape Rg shape_rg26.79
Total Rg total_rg27.47
Total atoms total_atoms2998
Residues n_residues341
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 dmax84.6
Rg (real space) rg_real27.31
Rg uncertainty (real space) rg_real_error0.58
I(0) (real space) i0_real2.7360e+07
I(0) uncertainty (real space) i0_real_error3.9670e+05
Rg (reciprocal space) rg_reciprocal27.31
I(0) (reciprocal space) i0_reciprocal27360000.0000
Solution quality estimate total_estimate0.8999
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks3
Primary peak position r_peak_primary21.9
Skewness Skewness skewness0.232
Kurtosis Kurtosis kurtosis-0.707
Angular range angular_range— – 0.2900 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha10250000.0000
Real-space data points n_real_points59
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.948; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.918; Smooth: 0.933

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (3)

7. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (3 domains)

Domain ID domain_idd6yika_
Class classa — All alpha proteins
Fold Fold folda.29 — Bromodomain-like
Superfamily Superfamily superfamilya.29.2 — Bromodomain
Family Family familya.29.2.1 — Bromodomain
Domain ID domain_idd6yikb_
Class classa — All alpha proteins
Fold Fold folda.29 — Bromodomain-like
Superfamily Superfamily superfamilya.29.2 — Bromodomain
Family Family familya.29.2.1 — Bromodomain
Domain ID domain_idd6yikc_
Class classa — All alpha proteins
Fold Fold folda.29 — Bromodomain-like
Superfamily Superfamily superfamilya.29.2 — Bromodomain
Family Family familya.29.2.1 — Bromodomain

CATH v4.4 (3 domains)

Domain ID domain_id6yikA00
Class class1 — Mainly Alpha
Architecture architecture20 — Up-down Bundle
Topology topology920 — Histone Acetyltransferase; Chain A
Homologous superfamily homologous superfamily10 — Bromodomain-like
Domain ID domain_id6yikB00
Class class1 — Mainly Alpha
Architecture architecture20 — Up-down Bundle
Topology topology920 — Histone Acetyltransferase; Chain A
Homologous superfamily homologous superfamily10 — Bromodomain-like
Domain ID domain_id6yikC00
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)