9y0p

Crystal structure of Escherichia coli DsbA C33A mutant in complex with a peptide derived from LptD - Binding mode I

Method: X-RAY DIFFRACTION Dmax: 76.8 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 heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain A; UniProt 20–208 Mutation:C33A Peptide from LPS-assembly protein LptD × 1 (P31554) GOL GLYCEROL × 1 NO3 NITRATE ION × 3 SO4 SULFATE ION × 2 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;293 K;0.2 M Calcium acetate hydrate, 20% w/v Polyethylene glycol 3,350 Resolution 1.47 Å R-free 0.210
2 Protein heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain C; UniProt 20–208 Mutation:C33A Peptide from LPS-assembly protein LptD × 1 (P31554) GOL GLYCEROL × 1 NO3 NITRATE ION × 2 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;293 K;0.2 M Calcium acetate hydrate, 20% w/v Polyethylene glycol 3,350 Resolution 1.47 Å R-free 0.210

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 2–190; UniProt 20–208 Author chain C; PDBConstruct 2–190; UniProt 20–208

Peptide from LPS-assembly protein LptD

OrganismNot specified

UniProt P31554

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 heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain B; UniProt 26–37 Non-standard monomer:Yes (specific site not provided by mmCIF) Thiol:disulfide interchange protein DsbA × 1 (P0AEG4) GOL GLYCEROL × 1 NO3 NITRATE ION × 3 SO4 SULFATE ION × 2 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;293 K;0.2 M Calcium acetate hydrate, 20% w/v Polyethylene glycol 3,350 Resolution 1.47 Å R-free 0.210
2 Protein heterocomplex Heteromer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain D; UniProt 26–37 Non-standard monomer:Yes (specific site not provided by mmCIF) Thiol:disulfide interchange protein DsbA × 1 (P0AEG4) GOL GLYCEROL × 1 NO3 NITRATE ION × 2 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;293 K;0.2 M Calcium acetate hydrate, 20% w/v Polyethylene glycol 3,350 Resolution 1.47 Å R-free 0.210

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.

10 other PDB entries and 11 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name LPTD_ECOLI
Isoform
PDB entities 2
Chains and sequence ranges Author chain B; PDBConstruct 2–13; UniProt 26–37 Author chain D; PDBConstruct 2–13; UniProt 26–37

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 9y0p

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 9y0p
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2. Structure Basics 2. Structure Basics

Entry ID entry_id9y0p
Deposition date deposition_date2025-08-28
Structure title titleCrystal structure of Escherichia coli DsbA C33A mutant in complex with a peptide derived from LptD - Binding mode I
Keywords keywordsThiol oxidase mutant, bacterial foldase, thioredoxin fold, complex, OXIDOREDUCTASE; OXIDOREDUCTASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier24.75
Radius of gyration Rg (electron density) rg_electron23.62
Forward intensity I(0) i033967300.00
Molecular weight molecular_weight44794.0 kDa
Excluded volume excluded_volume55920 ų
Envelope volume envelope_volume68582 ų
Hydration-shell volume shell_volume24148 ų
Envelope diameter envelope_diameter78.9
Shell Rg shell_rg30.62
Envelope Rg envelope_rg23.45
Shape Rg shape_rg23.60
Total Rg total_rg24.51
Total atoms total_atoms3162
Residues n_residues397
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 dmax76.8
Rg (real space) rg_real24.67
Rg uncertainty (real space) rg_real_error0.56
I(0) (real space) i0_real3.3970e+07
I(0) uncertainty (real space) i0_real_error5.0400e+05
Rg (reciprocal space) rg_reciprocal24.69
I(0) (reciprocal space) i0_reciprocal33970000.0000
Solution quality estimate total_estimate0.9123
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary75.5
Skewness Skewness skewness0.210
Kurtosis Kurtosis kurtosis-0.569
Angular range angular_range— – 0.3200 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha11420000.0000
Real-space data points n_real_points64
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.957; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.993; Smooth: 0.993

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (6)

8. Citations (1)

9. Files and Curves (10)