7kp5

Energetic and structural effects of the Tanford transition on the ligand recognition of bovine Beta-lactoglobulin

Method: X-RAY DIFFRACTION Dmax: 78.8 Å Quality: GOOD

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

Beta-lactoglobulin

OrganismNot specified

UniProt P02754

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 homooligomer Homooligomer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain AA1; UniProt 17–178 Chain BA1; UniProt 17–178 Not recorded SDS DODECYL SULFATE × 3 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 4.5;277.15 K;12-15 mg/mL protein in 0.05M acetate and 0.1 M NaCl. Combined 1:1 with 0.05M KH2PO4, 20% PEG Resolution 2.40 Å R-free 0.269

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.

101 other PDB entries and 123 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name LACB_BOVIN
Isoform
PDB entities 1
Chains and sequence ranges Author chain AA1; PDBConstruct 1–162; UniProt 17–178 Author chain BA1; PDBConstruct 1–162; UniProt 17–178

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 7kp5

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 7kp5
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2. Structure Basics 2. Structure Basics

Entry ID entry_id7kp5
Deposition date deposition_date2020-11-10
Structure title titleEnergetic and structural effects of the Tanford transition on the ligand recognition of bovine Beta-lactoglobulin
Keywords keywordsBovine beta-lactoglobulin, Lipocalin, Tanford transition, Structural energetics, TRANSPORT PROTEIN; TRANSPORT PROTEIN
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier21.87
Radius of gyration Rg (electron density) rg_electron21.20
Forward intensity I(0) i018944200.00
Molecular weight molecular_weight33519.0 kDa
Excluded volume excluded_volume42127 ų
Envelope volume envelope_volume49275 ų
Hydration-shell volume shell_volume20144 ų
Envelope diameter envelope_diameter79.3
Shell Rg shell_rg27.16
Envelope Rg envelope_rg21.40
Shape Rg shape_rg21.24
Total Rg total_rg21.90
Total atoms total_atoms2350
Residues n_residues317
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 dmax78.8
Rg (real space) rg_real21.96
Rg uncertainty (real space) rg_real_error0.65
I(0) (real space) i0_real1.8940e+07
I(0) uncertainty (real space) i0_real_error2.7070e+05
Rg (reciprocal space) rg_reciprocal21.94
I(0) (reciprocal space) i0_reciprocal18940000.0000
Solution quality estimate total_estimate0.8192
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary23.5
Skewness Skewness skewness0.513
Kurtosis Kurtosis kurtosis-0.086
Angular range angular_range— – 0.3650 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha6074000.0000
Real-space data points n_real_points68
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.606; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.841; Smooth: 0.988

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (3)

8. Citations (1)

9. Files and Curves (10)