256B

IMPROVEMENT OF THE 2.5 ANGSTROMS RESOLUTION MODEL OF CYTOCHROME B562 BY REDETERMINING THE PRIMARY STRUCTURE AND USING MOLECULAR GRAPHICS

• PDB DOI: https://doi.org/10.2210/pdb256B/pdb
• Entry: 256B supersedes: 156B

• Classification: ELECTRON TRANSPORT
• Organism(s): Escherichia coli
• Mutation(s): No 


• Deposited: 1990-01-16 Released: 1991-01-15 
• Deposition Author(s): Hamada, K., Bethge, P.H., Mathews, F.S.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.40 Å
• R-Value Observed: 0.164 

Literature

Improvement of the 2.5 A resolution model of cytochrome b562 by redetermining the primary structure and using molecular graphics.

Lederer, F., Glatigny, A., Bethge, P.H., Bellamy, H.D., Matthew, F.S.

(1981) J Mol Biol 148: 427-448

• PubMed: 7031264 
• DOI: https://doi.org/10.1016/0022-2836(81)90185-6
• Primary Citation of Related Structures:  
  256B

Biological Assembly 1  

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

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

Biological Assembly 2  

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

Biological assembly 2 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 25.22 kDa 
• Atom Count: 1,923 
• Modelled Residue Count: 212 
• Deposited Residue Count: 212 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
CYTOCHROME B562	A, B	106	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P0ABE7 (Escherichia coli) Explore P0ABE7  Go to UniProtKB:  P0ABE7

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
HEM	E [auth A], H [auth B]	PROTOPORPHYRIN IX CONTAINING FE C34 H32 Fe N4 O4 KABFMIBPWCXCRK-RGGAHWMASA-L
SO4	C [auth A], D [auth A], F [auth B], G [auth B]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.40 Å
• R-Value Observed: 0.164 
• Space Group: P 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 33.71	α = 102.76
b = 50.48	β = 86.55
c = 32.73	γ = 106.7

Software Package:

Software Name	Purpose
PROFFT	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 1991-01-15 
Deposition Author(s): Hamada, K., Bethge, P.H., Mathews, F.S.
• This entry supersedes: 156B

Revision History  

• Version 1.0: 1991-01-15
  Type: Initial release
  
• Version 1.1: 2008-03-03
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2014-08-27
  Changes: Derived calculations
• Version 1.4: 2017-11-29
  Changes: Derived calculations, Other
• Version 1.5: 2024-02-14
  Changes: Data collection, Database references, Derived calculations