1CTJ

CRYSTAL STRUCTURE OF CYTOCHROME C6

• PDB DOI: https://doi.org/10.2210/pdb1CTJ/pdb

• Classification: ELECTRON TRANSPORT
• Organism(s): Chlorolobion braunii
• Mutation(s): No 


• Deposited: 1995-08-08 Released: 1996-06-10 
• Deposition Author(s): Sheldrick, G.M.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.10 Å
• R-Value Free: 0.188 
• R-Value Observed: 0.138 

Literature

Ab initio determination of the crystal structure of cytochrome c6 and comparison with plastocyanin.

Frazao, C., Soares, C.M., Carrondo, M.A., Pohl, E., Dauter, Z., Wilson, K.S., Hervas, M., Navarro, J.A., De la Rosa, M.A., Sheldrick, G.M.

(1995) Structure 3: 1159-1169

• PubMed: 8591027 
• DOI: https://doi.org/10.1016/s0969-2126(01)00252-0
• Primary Citation of Related Structures:  
  1CTJ


• PubMed Abstract: 
  

  Electron transfer between cytochrome f and photosystem I (PSI) can be accomplished by the heme-containing protein cytochrome c6 or by the copper-containing protein plastocyanin. Higher plants use plastocyanin as the only electron donor to PSI, whereas most green algae and cyanobacteria can use either, with similar kinetics, depending on the copper concentration in the culture medium.

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Organizational Affiliation: 

Instituto de Tecnologia Química e Biológica, Oeiras, Portugal.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 9.98 kDa 
• Atom Count: 918 
• Modelled Residue Count: 89 
• Deposited Residue Count: 89 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
CYTOCHROME C6	A	89	Chlorolobion braunii	Mutation(s): 0
UniProt
Find proteins for Q09099 (Chlorolobion braunii) Explore Q09099  Go to UniProtKB:  Q09099

Small Molecules

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

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.10 Å
• R-Value Free: 0.188 
• R-Value Observed: 0.138 
• Space Group: R 3

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 40.43	α = 80.25
b = 40.43	β = 80.25
c = 40.43	γ = 80.25

Software Package:

Software Name	Purpose
SHELXL	refinement
DENZO	data reduction
SCALEPACK	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 1996-06-10 
Deposition Author(s): Sheldrick, G.M.

Revision History  

• Version 1.0: 1996-06-10
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance