5ktu

Crystal structure of the bromodomain of human CREBBP bound to pyrazolopiperidine scaffold

Method: X-RAY DIFFRACTION Dmax: 78.1 Å Quality: REASONABLE

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

CREB-binding protein

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 1082–1197 Fragment:bromodomain (UNP residues 1082-1197) 6XB 1-(3-phenylazanyl-1,4,6,7-tetrahydropyrazolo[4,3-c]pyridin-5-yl)ethanone × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;277 K;0.2 M magnesium chloride, 0.1 M Bis-Tris pH 6.5, and 25% polyethylene glycol (PEG) 3350 Resolution 1.38 Å R-free 0.212
2 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain B; UniProt 1082–1197 Fragment:bromodomain (UNP residues 1082-1197) DMS DIMETHYL SULFOXIDE × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;277 K;0.2 M magnesium chloride, 0.1 M Bis-Tris pH 6.5, and 25% polyethylene glycol (PEG) 3350 Resolution 1.38 Å R-free 0.212

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 223 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 3–118; UniProt 1082–1197 Author chain B; PDBConstruct 3–118; UniProt 1082–1197

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 5ktu

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 5ktu
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2. Structure Basics 2. Structure Basics

Entry ID entry_id5ktu
Deposition date deposition_date2016-07-12
Structure title titleCrystal structure of the bromodomain of human CREBBP bound to pyrazolopiperidine scaffold
Keywords keywordsbromodomain, inhibitor, epigenetics, TRANSFERASE; TRANSFERASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier20.33
Radius of gyration Rg (electron density) rg_electron19.41
Forward intensity I(0) i011857200.00
Molecular weight molecular_weight26604.0 kDa
Excluded volume excluded_volume33638 ų
Envelope volume envelope_volume39628 ų
Hydration-shell volume shell_volume17523 ų
Envelope diameter envelope_diameter70.8
Shell Rg shell_rg25.15
Envelope Rg envelope_rg19.66
Shape Rg shape_rg19.42
Total Rg total_rg20.29
Total atoms total_atoms1877
Residues n_residues220
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 dmax78.1
Rg (real space) rg_real20.30
Rg uncertainty (real space) rg_real_error0.77
I(0) (real space) i0_real1.1860e+07
I(0) uncertainty (real space) i0_real_error1.5920e+05
Rg (reciprocal space) rg_reciprocal20.31
I(0) (reciprocal space) i0_reciprocal11860000.0000
Solution quality estimate total_estimate0.7348
Solution quality rating solution_quality REASONABLE a REASONABLE solution
P(r) peaks n_peaks3
Primary peak position r_peak_primary21.2
Skewness Skewness skewness0.294
Kurtosis Kurtosis kurtosis-0.328
Angular range angular_range— – 0.3900 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha3696000.0000
Real-space data points n_real_points71
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.567; Stabil: 0.998; Sysdev: 1.000; Positv: 1.000; Valcen: 0.855; Smooth: 0.000

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (4)

7. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_idd5ktua_
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_idd5ktub_
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 (2 domains)

Domain ID domain_id5ktuA00
Class class1 — Mainly Alpha
Architecture architecture20 — Up-down Bundle
Topology topology920 — Histone Acetyltransferase; Chain A
Homologous superfamily homologous superfamily10 — Bromodomain-like
Domain ID domain_id5ktuB00
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)