3mb4

Crystal Structure of the fifth Bromodomain of Human Poly-bromodomain containing protein 1 (PB1) with NMP

Method: X-RAY DIFFRACTION Dmax: 68.3 Å Quality: GOOD

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

Protein polybromo-1

Homo sapiens

UniProt Q86U86

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 645–766 Fragment:UNP residues 645-766 EDO 1,2-ETHANEDIOL × 2 MB3 1-methylpyrrolidin-2-one × 1 CL CHLORIDE ION × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 7.5;277 K;0.15M NaNO3 25% PEG 3350 10% Ethylene Glycol, pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 277K Resolution 1.66 Å R-free 0.219
2 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain B; UniProt 645–766 Fragment:UNP residues 645-766 EDO 1,2-ETHANEDIOL × 3 MB3 1-methylpyrrolidin-2-one × 1 CL CHLORIDE ION × 3 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 7.5;277 K;0.15M NaNO3 25% PEG 3350 10% Ethylene Glycol, pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 277K Resolution 1.66 Å R-free 0.219

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.

29 other PDB entries and 65 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name PB1_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 3–124; UniProt 645–766 Author chain B; PDBConstruct 3–124; UniProt 645–766

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 3mb4

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 3mb4
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2. Structure Basics 2. Structure Basics

Entry ID entry_id3mb4
Deposition date deposition_date2010-03-25
Structure title titleCrystal Structure of the fifth Bromodomain of Human Poly-bromodomain containing protein 1 (PB1) with NMP
Keywords keywords;PB1, polybromo 1 isoform 1, BAF180, Polybromo-1D, PBRM1, BRG1-associated factor 180, Structural Genomics Consortium, SGC, Bromodomain, Chromatin regulator, DNA-binding, Nucleus, Phosphoprotein, Transcription, Transcription regulation ;; TRANSCRIPTION
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier20.62
Radius of gyration Rg (electron density) rg_electron19.56
Forward intensity I(0) i014074300.00
Molecular weight molecular_weight27802.0 kDa
Excluded volume excluded_volume34734 ų
Envelope volume envelope_volume42976 ų
Hydration-shell volume shell_volume18609 ų
Envelope diameter envelope_diameter65.0
Shell Rg shell_rg25.72
Envelope Rg envelope_rg20.07
Shape Rg shape_rg19.56
Total Rg total_rg20.52
Total atoms total_atoms1934
Residues n_residues231
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 dmax68.3
Rg (real space) rg_real20.58
Rg uncertainty (real space) rg_real_error0.38
I(0) (real space) i0_real1.4070e+07
I(0) uncertainty (real space) i0_real_error1.7140e+05
Rg (reciprocal space) rg_reciprocal20.58
I(0) (reciprocal space) i0_reciprocal14070000.0000
Solution quality estimate total_estimate0.8138
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary22.8
Skewness Skewness skewness0.256
Kurtosis Kurtosis kurtosis-0.531
Angular range angular_range— – 0.3850 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha3436000.0000
Real-space data points n_real_points70
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.863; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.988; Smooth: 0.000

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (5)

7. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_idd3mb4a_
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_idd3mb4b_
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

CATH v4.4 (2 domains)

Domain ID domain_id3mb4A00
Class class1 — Mainly Alpha
Architecture architecture20 — Up-down Bundle
Topology topology920 — Histone Acetyltransferase; Chain A
Homologous superfamily homologous superfamily10 — Bromodomain-like
Domain ID domain_id3mb4B00
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)