6tbt

Crystal structure of the BCL6 BTB domain in complex with an Apt48 peptide

Method: X-RAY DIFFRACTION Dmax: 72.1 Å Quality: GOOD

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

B-cell lymphoma 6 protein

Homo sapiens

UniProt P41182

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 × 4 PDB declaration: tetrameric(4) Consistent with protein copy count Chain A; UniProt 6–129 Chain B; UniProt 6–129 Mutation:C8Q, C67R, C84N Apt48 peptide × 2 CL CHLORIDE ION × 5 MG MAGNESIUM ION × 2 GOL GLYCEROL × 1 NA SODIUM ION × 1 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 7;291 K;2.4 M NaCl, 0.1 M Tris pH 7, 0.2 M MgCl2 Resolution 1.63 Å R-free 0.177

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.

245 other PDB entries and 265 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name BCL6_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 3–126; UniProt 6–129 Author chain B; PDBConstruct 3–126; UniProt 6–129

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 6tbt

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 6tbt
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2. Structure Basics 2. Structure Basics

Entry ID entry_id6tbt
Deposition date deposition_date2019-11-04
Structure title titleCrystal structure of the BCL6 BTB domain in complex with an Apt48 peptide
Keywords keywordsBCL6, Apt48, TRANSCRIPTION; TRANSCRIPTION
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier20.92
Radius of gyration Rg (electron density) rg_electron20.06
Forward intensity I(0) i016114100.00
Molecular weight molecular_weight30178.0 kDa
Excluded volume excluded_volume37819 ų
Envelope volume envelope_volume45089 ų
Hydration-shell volume shell_volume19269 ų
Envelope diameter envelope_diameter75.8
Shell Rg shell_rg26.15
Envelope Rg envelope_rg20.55
Shape Rg shape_rg20.02
Total Rg total_rg21.05
Total atoms total_atoms2104
Residues n_residues258
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 dmax72.1
Rg (real space) rg_real20.95
Rg uncertainty (real space) rg_real_error0.50
I(0) (real space) i0_real1.6110e+07
I(0) uncertainty (real space) i0_real_error2.1670e+05
Rg (reciprocal space) rg_reciprocal20.94
I(0) (reciprocal space) i0_reciprocal16110000.0000
Solution quality estimate total_estimate0.7790
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks3
Primary peak position r_peak_primary23.0
Skewness Skewness skewness0.447
Kurtosis Kurtosis kurtosis-0.108
Angular range angular_range— – 0.3800 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha5209000.0000
Real-space data points n_real_points70
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.720; Stabil: 0.999; Sysdev: 1.000; Positv: 1.000; Valcen: 0.966; Smooth: 0.000

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (7)

8. Citations (1)

9. Files and Curves (10)