1ETP

CRYSTAL STRUCTURE OF CYTOCHROME C4 FROM PSEUDOMONAS STUTZERI

• PDB DOI: https://doi.org/10.2210/pdb1ETP/pdb

• Classification: ELECTRON TRANSPORT
• Organism(s): Stutzerimonas stutzeri
• Mutation(s): No 


• Deposited: 1996-01-23 Released: 1997-02-12 
• Deposition Author(s): Kadziola, A., Larsen, S.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 0.267 
• R-Value Work: 0.201 
• R-Value Observed: 0.201 

Literature

Crystal structure of the dihaem cytochrome c4 from Pseudomonas stutzeri determined at 2.2A resolution.

Kadziola, A., Larsen, S.

(1997) Structure 5: 203-216

• PubMed: 9032080 
• DOI: https://doi.org/10.1016/s0969-2126(97)00179-2
• Primary Citation of Related Structures:  
  1ETP


• PubMed Abstract: 
  

  . Cytochromes c4 are dihaem cytochromes c found in a variety of bacteria. They are assumed to take part in the electron-transport systems associated with both aerobic and anaerobic respiration. The cytochrome c4 proteins are located in the periplasm, predominantly bound to the inner membrane, and are able to transfer electrons between membrane-bound reduction systems and terminal oxidases. Alignment of cytochrome c4 sequences from three bacteria, Pseudomonas aeruginosa, Pseudomonas stutzeri and Azotobacter vinelandii, suggests that these dihaem proteins are composed of two similar domains. Two distinctly different redox potentials have been measured for the Ps. stutzeri cytochrome c4, however.

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Organizational Affiliation: 

Centre for Crystallographic Studies, Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Biological Assembly 2  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 2 assigned by authors.

Macromolecule Content

• Total Structure Weight: 41.87 kDa 
• Atom Count: 3,066 
• Modelled Residue Count: 380 
• Deposited Residue Count: 380 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
CYTOCHROME C4	A, B	190	Stutzerimonas stutzeri	Mutation(s): 0
UniProt
Find proteins for Q52369 (Stutzerimonas stutzeri) Explore Q52369  Go to UniProtKB:  Q52369

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
HEM	C [auth A], D [auth A], E [auth B], F [auth B]	PROTOPORPHYRIN IX CONTAINING FE C34 H32 Fe N4 O4 KABFMIBPWCXCRK-RGGAHWMASA-L

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 0.267 
• R-Value Work: 0.201 
• R-Value Observed: 0.201 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 49.49	α = 90
b = 58.58	β = 96.96
c = 63.51	γ = 90

Software Package:

Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
DENZO	data reduction
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 1997-02-12 
Deposition Author(s): Kadziola, A., Larsen, S.

Revision History  

• Version 1.0: 1997-02-12
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance