3wyp

Crystal structure of wild-type core streptavidin in complex with D-biotin/biotin-D-sulfoxide at 1.3 A resolution

Method: X-RAY DIFFRACTION Dmax: 67.4 Å Quality: EXCELLENT

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

Streptavidin

Streptomyces avidinii

UniProt P22629

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 × 4 PDB declaration: tetrameric(4) Consistent with protein copy count Chain A; UniProt 37–163 Chain B; UniProt 37–163 Chain C; UniProt 37–163 Chain D; UniProt 37–163 Fragment:UNP residues 37-163 BTN BIOTIN × 2 GOL GLYCEROL × 10 BSO BIOTIN-D-SULFOXIDE × 2 SO4 SULFATE ION × 2 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 5.2;293 K;0.2M ammonium sulfate, 0.1M sodium acetate trihydrate, 24% polyethylene glycol 4000, pH 5.2, VAPOR DIFFUSION, SITTING DROP, temperature 293K Resolution 1.30 Å R-free 0.179

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.

312 other PDB entries and 368 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name SAV_STRAV
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–127; UniProt 37–163 Author chain B; PDBConstruct 1–127; UniProt 37–163 Author chain C; PDBConstruct 1–127; UniProt 37–163 Author chain D; PDBConstruct 1–127; UniProt 37–163

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 3wyp

P(r) Distance Distribution P(r) Distribution

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

Entry ID entry_id3wyp
Deposition date deposition_date2014-09-05
Structure title titleCrystal structure of wild-type core streptavidin in complex with D-biotin/biotin-D-sulfoxide at 1.3 A resolution
Keywords keywordsbeta-barrel, BIOTIN BINDING PROTEIN; BIOTIN BINDING PROTEIN
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier22.48
Radius of gyration Rg (electron density) rg_electron21.39
Forward intensity I(0) i050955300.00
Molecular weight molecular_weight53335.0 kDa
Excluded volume excluded_volume65675 ų
Envelope volume envelope_volume74963 ų
Hydration-shell volume shell_volume27800 ų
Envelope diameter envelope_diameter67.2
Shell Rg shell_rg29.18
Envelope Rg envelope_rg21.77
Shape Rg shape_rg21.36
Total Rg total_rg22.32
Total atoms total_atoms3766
Residues n_residues486
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 dmax67.4
Rg (real space) rg_real22.32
Rg uncertainty (real space) rg_real_error0.28
I(0) (real space) i0_real5.0960e+07
I(0) uncertainty (real space) i0_real_error5.5190e+05
Rg (reciprocal space) rg_reciprocal22.36
I(0) (reciprocal space) i0_reciprocal50960000.0000
Solution quality estimate total_estimate0.9040
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary29.6
Skewness Skewness skewness0.086
Kurtosis Kurtosis kurtosis-0.534
Angular range angular_range— – 0.3550 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha17950000.0000
Real-space data points n_real_points67
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.939; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.978; Smooth: 0.954

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (6)

7. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

Domain ID domain_idd3wypa_
Class classb — All beta proteins
Fold Fold foldb.61 — Streptavidin-like
Superfamily Superfamily superfamilyb.61.1 — Avidin/streptavidin
Family Family familyb.61.1.1 — Avidin/streptavidin
Domain ID domain_idd3wypb_
Class classb — All beta proteins
Fold Fold foldb.61 — Streptavidin-like
Superfamily Superfamily superfamilyb.61.1 — Avidin/streptavidin
Family Family familyb.61.1.1 — Avidin/streptavidin
Domain ID domain_idd3wypc_
Class classb — All beta proteins
Fold Fold foldb.61 — Streptavidin-like
Superfamily Superfamily superfamilyb.61.1 — Avidin/streptavidin
Family Family familyb.61.1.1 — Avidin/streptavidin
Domain ID domain_idd3wypd_
Class classb — All beta proteins
Fold Fold foldb.61 — Streptavidin-like
Superfamily Superfamily superfamilyb.61.1 — Avidin/streptavidin
Family Family familyb.61.1.1 — Avidin/streptavidin

CATH v4.4 (4 domains)

Domain ID domain_id3wypA00
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology128 — Lipocalin
Homologous superfamily homologous superfamily30 — Avidin-like
Domain ID domain_id3wypB00
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology128 — Lipocalin
Homologous superfamily homologous superfamily30 — Avidin-like
Domain ID domain_id3wypC00
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology128 — Lipocalin
Homologous superfamily homologous superfamily30 — Avidin-like
Domain ID domain_id3wypD00
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology128 — Lipocalin
Homologous superfamily homologous superfamily30 — Avidin-like

8. Citations (1)

9. Files and Curves (10)