1swf

CIRCULAR PERMUTED STREPTAVIDIN E51/A46

Method: X-RAY DIFFRACTION Dmax: 86.3 Å Quality: GOOD

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

CIRCULARLY PERMUTED CORE-STREPTAVIDIN E51/A46

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 75–163 Chain B; UniProt 75–163 Chain C; UniProt 75–163 Chain D; UniProt 75–163 Mutation:;DELETION OF SURFACE LOOP RESIDUES 45 - 50 FROM THE SEQUENCE. THE OLD N- AND C-TERMINI (S139, A13, RESPECTIVELY) ARE CONNECTED INTRODUCING THE FOUR ADDITIONAL RESIDUES GGGS ; No other associated polymer X-RAY DIFFRACTION X-ray crystallization conditions:pH 4.5;PROTEIN WAS CRYSTALLIZED FROM 52% MPD (PH 4.5). Resolution 2.00 Å R-free 0.288
2 Protein homooligomer Homooligomer Protein × 4 PDB declaration: tetrameric(4) Consistent with protein copy count Chain A; UniProt 75–163 Chain B; UniProt 75–163 Chain C; UniProt 75–163 Chain D; UniProt 75–163 Mutation:;DELETION OF SURFACE LOOP RESIDUES 45 - 50 FROM THE SEQUENCE. THE OLD N- AND C-TERMINI (S139, A13, RESPECTIVELY) ARE CONNECTED INTRODUCING THE FOUR ADDITIONAL RESIDUES GGGS ; No other associated polymer X-RAY DIFFRACTION X-ray crystallization conditions:pH 4.5;PROTEIN WAS CRYSTALLIZED FROM 52% MPD (PH 4.5). Resolution 2.00 Å R-free 0.288

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 367 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 2–90; UniProt 75–163 Author chain B; PDBConstruct 2–90; UniProt 75–163 Author chain C; PDBConstruct 2–90; UniProt 75–163 Author chain D; PDBConstruct 2–90; UniProt 75–163

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 1swf

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 1swf
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2. Structure Basics 2. Structure Basics

Entry ID entry_id1swf
Deposition date deposition_date1997-04-23
Structure title titleCIRCULAR PERMUTED STREPTAVIDIN E51/A46
Keywords keywordsBIOTIN BINDING PROTEIN, CIRCULAR PERMUTATION, BIOTIN, 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_guinier23.53
Radius of gyration Rg (electron density) rg_electron22.40
Forward intensity I(0) i045694300.00
Molecular weight molecular_weight50393.0 kDa
Excluded volume excluded_volume62110 ų
Envelope volume envelope_volume74852 ų
Hydration-shell volume shell_volume27243 ų
Envelope diameter envelope_diameter89.7
Shell Rg shell_rg29.66
Envelope Rg envelope_rg22.69
Shape Rg shape_rg22.36
Total Rg total_rg23.35
Total atoms total_atoms3572
Residues n_residues482
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 dmax86.3
Rg (real space) rg_real23.40
Rg uncertainty (real space) rg_real_error0.63
I(0) (real space) i0_real4.5690e+07
I(0) uncertainty (real space) i0_real_error5.8970e+05
Rg (reciprocal space) rg_reciprocal23.43
I(0) (reciprocal space) i0_reciprocal45700000.0000
Solution quality estimate total_estimate0.7578
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary76.8
Skewness Skewness skewness0.192
Kurtosis Kurtosis kurtosis-0.346
Angular range angular_range— – 0.3350 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha13270000.0000
Real-space data points n_real_points65
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.628; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.963; Smooth: 0.000

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (2)

7. Fold Classification (SCOP + CATH) 8 domains

SCOP 2.08 (4 domains)

Domain ID domain_idd1swfa_
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_idd1swfb_
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_idd1swfc_
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_idd1swfd_
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_id1swfA00
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology128 — Lipocalin
Homologous superfamily homologous superfamily30 — Avidin-like
Domain ID domain_id1swfB00
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology128 — Lipocalin
Homologous superfamily homologous superfamily30 — Avidin-like
Domain ID domain_id1swfC00
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology128 — Lipocalin
Homologous superfamily homologous superfamily30 — Avidin-like
Domain ID domain_id1swfD00
Class class2 — Mainly Beta
Architecture architecture40 — Beta Barrel
Topology topology128 — Lipocalin
Homologous superfamily homologous superfamily30 — Avidin-like

8. Citations (3)

9. Files and Curves (10)