Biological Assembly 1  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report | Ligand Interaction

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 47.05 kDa 
• Atom Count: 3330 
• Modelled Residue Count: 431 
• Deposited Residue Count: 432 
• Unique protein chains: 1

1G0T

DSBC MUTANT C101S

• PDB DOI: 10.2210/pdb1G0T/pdb

• Classification: ISOMERASE
• Organism(s): Escherichia coli
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2000-10-09 Released: 2003-02-04 
• Deposition Author(s): Haebel, P.W., Metcalf, P.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.60 Å
• R-Value Free: 0.274 
• R-Value Work: 0.212 
• R-Value Observed: 0.212 

Literature

Crystal structure of the protein disulfide bond isomerase, DsbC, from Escherichia coli

Haebel, P.W., Goldstone, D., Katzen, F., Beckwith, J., Metcalf, P.

(2002) EMBO J 21: 4774-4784

• PubMed: 10700276 
• DOI: 10.1038/73295
• Primary Citation of Related Structures:  
  1EEJ, 1G0T


• PubMed Abstract: 
  

DsbC is one of five Escherichia coli proteins required for disulfide bond formation and is thought to function as a disulfide bond isomerase during oxidative protein folding in the periplasm. DsbC is a 2 x 23 kDa homodimer and has both protein disulfide isomerase and chaperone activity. We report the 1.9 A resolution crystal structure of oxidized DsbC where both Cys-X-X-Cys active sites form disulfide bonds. The molecule consists of separate thioredoxin-like domains joined via hinged linker helices to an N-terminal dimerization domain. The hinges allow relative movement of the active sites, and a broad uncharged cleft between them may be involved in peptide binding and DsbC foldase activities.

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Related Citations: 

• The disulfide bond isomerase DsbC is activated by an immunoglobulin-fold thiol oxidoreductase: crystal structure of the DsbC-DsbDalpha complex
  McCarthy, A.A., Haebel, P.W., Torronen, A., Rybin, V., Baker, E.N., Metcalf, P.
  (2000) Nat Struct Biol 7: 196

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Organizational Affiliation: 

School of Biological Sciences, Auckland University, Private Bag 92019 Auckland New Zealand.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
THIOL:DISULFIDE INTERCHANGE PROTEIN DSBC	A, B	216	Escherichia coli	Mutation(s): 1  EC: 5.3.4.1
UniProt
Find proteins for P0AEG6 (Escherichia coli (strain K12)) Explore P0AEG6  Go to UniProtKB:  P0AEG6

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
PEG	C [auth A]	DI(HYDROXYETHYL)ETHER C4 H10 O3 MTHSVFCYNBDYFN-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.60 Å
• R-Value Free: 0.274 
• R-Value Work: 0.212 
• R-Value Observed: 0.212 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 59.441	α = 90
b = 78.501	β = 90
c = 95.697	γ = 90

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
AMoRE	phasing
CNS	refinement

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2000-10-09 
• Released Date: 2003-02-04 
Deposition Author(s): Haebel, P.W., Metcalf, P.

Revision History  

• Version 1.0: 2003-02-04
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2021-11-03
  Changes: Database references, Derived calculations