Biological Assembly 1  

 3D View: Structure | Electron Density

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 23.53 kDa 
• Atom Count: 1574 
• Residue Count: 209 
• Unique protein chains: 1

1T3B

X-ray Structure of DsbC from Haemophilus influenzae

• DOI: 10.2210/pdb1T3B/pdb

• Classification: ISOMERASE
• Organism(s): Haemophilus influenzae
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2004-04-26 Released: 2004-09-07 
• Deposition Author(s): Zhang, M., Monzingo, A.F., Segatori, L., Georgiou, G., Robertus, J.D.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.50 Å
• R-Value Free: 0.295 
• R-Value Work: 0.246 
• R-Value Observed: 0.249 

Literature

Structure of DsbC from Haemophilus influenzae.

Zhang, M., Monzingo, A.F., Segatori, L., Georgiou, G., Robertus, J.D.

(2004) Acta Crystallogr D Biol Crystallogr 60: 1512-1518

• PubMed: 15333920 
• DOI: 10.1107/S0907444904014593
• Primary Citation of Related Structures:  
  1T3B


• PubMed Abstract: 
  

Bacterial DsbC proteins are involved in rearranging or reducing mismatched disulfide bonds folding within the periplasm. The X-ray structure of the enzyme from Haemophilus influenzae has been solved and compared with the known structure of the Escherichia coli protein. The proteins act as V-shaped dimers with a large cleft to accommodate substrate proteins. The dimers are anchored by a small N-terminal domain, but have a flexible linker region which allows the larger C-terminal domain, with its reactive sulfhydryls, to clamp down on substrates. The overall folds are very similar, but the comparison shows a wider range of hinge motions than previously thought. The crystal packing of the H. influenzae protein allows the movement of the N-terminal domain with respect to the C-terminal domain through motions in the flexible hinge, generating high thermal parameters and unusually high anisotropy in the crystallographic data.

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Organizational Affiliation: 

Institute for Cellular and Molecular Biology, Department of Chemistry and Biochemistry, 1 University Station, University of Texas at Austin, Austin, TX 78712, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Thiol:disulfide interchange protein dsbC	A	211	Haemophilus influenzae	Mutation(s): 0  Gene Names: dsbC, xprA, HI1213 EC: 5.3.4.1
Find proteins for P45111 (Haemophilus influenzae (strain ATCC 51907 / DSM 11121 / KW20 / Rd)) Explore P45111  Go to UniProtKB:  P45111

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.50 Å
• R-Value Free: 0.295 
• R-Value Work: 0.246 
• R-Value Observed: 0.249 
• Space Group: P 4₃ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 74.92	α = 90
b = 74.92	β = 90
c = 103.38	γ = 90

Software Package:

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

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2004-04-26 
• Released Date: 2004-09-07 
Deposition Author(s): Zhang, M., Monzingo, A.F., Segatori, L., Georgiou, G., Robertus, J.D.

Revision History 

• Version 1.0: 2004-09-07
  Type: Initial release
  
• Version 1.1: 2008-04-30
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance