2b6m

Structure of the DsbA mutant (P31A-C33A)

Method: X-RAY DIFFRACTION Dmax: 67.3 Å Quality: EXCELLENT

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

Thiol:disulfide interchange protein dsbA

Escherichia coli

UniProt P0AEG4

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 monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain A; UniProt 20–208 Mutation:P31A, C33A PEG DI(HYDROXYETHYL)ETHER × 2 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 8.2;293 K;PEG 3350, ammonium phosphate, pH 8.2, VAPOR DIFFUSION, SITTING DROP, temperature 293K Resolution 2.65 Å R-free 0.258
2 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain B; UniProt 20–208 Mutation:P31A, C33A No other associated polymer X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 8.2;293 K;PEG 3350, ammonium phosphate, pH 8.2, VAPOR DIFFUSION, SITTING DROP, temperature 293K Resolution 2.65 Å R-free 0.258

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.

75 other PDB entries and 151 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name DSBA_ECOLI
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–189; UniProt 20–208 Author chain B; PDBConstruct 1–189; UniProt 20–208

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 2b6m

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 2b6m
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2. Structure Basics 2. Structure Basics

Entry ID entry_id2b6m
Deposition date deposition_date2005-10-03
Structure title titleStructure of the DsbA mutant (P31A-C33A)
Keywords keywordsdisulfide; thioredoxin; thiol-oxidase, OXIDOREDUCTASE; OXIDOREDUCTASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier21.70
Radius of gyration Rg (electron density) rg_electron20.66
Forward intensity I(0) i027959800.00
Molecular weight molecular_weight41005.0 kDa
Excluded volume excluded_volume51491 ų
Envelope volume envelope_volume59413 ų
Hydration-shell volume shell_volume23734 ų
Envelope diameter envelope_diameter71.2
Shell Rg shell_rg27.45
Envelope Rg envelope_rg20.80
Shape Rg shape_rg20.65
Total Rg total_rg21.57
Total atoms total_atoms2891
Residues n_residues375
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 dmax67.3
Rg (real space) rg_real21.54
Rg uncertainty (real space) rg_real_error0.24
I(0) (real space) i0_real2.7960e+07
I(0) uncertainty (real space) i0_real_error3.0810e+05
Rg (reciprocal space) rg_reciprocal21.57
I(0) (reciprocal space) i0_reciprocal27960000.0000
Solution quality estimate total_estimate0.9030
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary27.1
Skewness Skewness skewness0.100
Kurtosis Kurtosis kurtosis-0.542
Angular range angular_range— – 0.3650 −1
Current regularization parameter α current_alpha0.0001
Highest regularization parameter α highest_alpha13570000.0000
Real-space data points n_real_points68
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.915; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.994; Smooth: 0.995

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (3)

7. Fold Classification (SCOP + CATH) 4 domains

SCOP 2.08 (2 domains)

Domain ID domain_idd2b6ma_
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.47 — Thioredoxin fold
Superfamily Superfamily superfamilyc.47.1 — Thioredoxin-like
Family Family familyc.47.1.13 — DsbA-like
Domain ID domain_idd2b6mb_
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.47 — Thioredoxin fold
Superfamily Superfamily superfamilyc.47.1 — Thioredoxin-like
Family Family familyc.47.1.13 — DsbA-like

CATH v4.4 (2 domains)

Domain ID domain_id2b6mA00
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology30 — Glutaredoxin
Homologous superfamily homologous superfamily10 — Glutaredoxin
Domain ID domain_id2b6mB00
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology30 — Glutaredoxin
Homologous superfamily homologous superfamily10 — Glutaredoxin

8. Citations (1)

9. Files and Curves (10)