4gd9

Circular Permuted Streptavidin N49/G48

Method: X-RAY DIFFRACTION Dmax: 76.2 Å Quality: GOOD

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 73–163 Chain A; UniProt 37–72 Chain B; UniProt 73–163 Chain B; UniProt 37–72 Chain C; UniProt 73–163 Chain C; UniProt 37–72 Chain D; UniProt 73–163 Chain D; UniProt 37–72 Not recorded BTN BIOTIN × 4 SO4 SULFATE ION × 2 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 7.5;298 K;1.0 M ammonium phosphate, 0.1 M Tris-chloride, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K Resolution 1.50 Å R-free 0.230

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 2–92; UniProt 73–163 Author chain A; PDBConstruct 97–132; UniProt 37–72 Author chain B; PDBConstruct 2–92; UniProt 73–163 Author chain B; PDBConstruct 97–132; UniProt 37–72 Author chain C; PDBConstruct 2–92; UniProt 73–163 Author chain C; PDBConstruct 97–132; UniProt 37–72 Author chain D; PDBConstruct 2–92; UniProt 73–163 Author chain D; PDBConstruct 97–132; UniProt 37–72

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 4gd9

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 4gd9
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2. Structure Basics 2. Structure Basics

Entry ID entry_id4gd9
Deposition date deposition_date2012-07-31
Structure title titleCircular Permuted Streptavidin N49/G48
Keywords keywordsbiotin-binding protein, biotin, circular permutation; Biotin-Binding Protein
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier23.07
Radius of gyration Rg (electron density) rg_electron21.92
Forward intensity I(0) i051200100.00
Molecular weight molecular_weight53092.0 kDa
Excluded volume excluded_volume65250 ų
Envelope volume envelope_volume76330 ų
Hydration-shell volume shell_volume27843 ų
Envelope diameter envelope_diameter71.9
Shell Rg shell_rg29.68
Envelope Rg envelope_rg22.29
Shape Rg shape_rg21.88
Total Rg total_rg22.89
Total atoms total_atoms3753
Residues n_residues496
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 dmax76.2
Rg (real space) rg_real22.91
Rg uncertainty (real space) rg_real_error0.50
I(0) (real space) i0_real5.1200e+07
I(0) uncertainty (real space) i0_real_error6.6180e+05
Rg (reciprocal space) rg_reciprocal22.95
I(0) (reciprocal space) i0_reciprocal51200000.0000
Solution quality estimate total_estimate0.8044
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks3
Primary peak position r_peak_primary30.5
Skewness Skewness skewness0.111
Kurtosis Kurtosis kurtosis-0.519
Angular range angular_range— – 0.3450 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha18660000.0000
Real-space data points n_real_points66
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.820; Stabil: 0.999; Sysdev: 1.000; Positv: 1.000; Valcen: 0.997; Smooth: 0.000

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (4)

7. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

Domain ID domain_idd4gd9a_
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_idd4gd9b_
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_idd4gd9c_
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_idd4gd9d_
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_id4gd9A00
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology128 — Lipocalin
Homologous superfamily homologous superfamily30 — Avidin-like
Domain ID domain_id4gd9B00
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology128 — Lipocalin
Homologous superfamily homologous superfamily30 — Avidin-like
Domain ID domain_id4gd9C00
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology128 — Lipocalin
Homologous superfamily homologous superfamily30 — Avidin-like
Domain ID domain_id4gd9D00
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)