1APC | pdb_00001apc

SOLUTION STRUCTURE OF APOCYTOCHROME B562

• PDB DOI: https://doi.org/10.2210/pdb1APC/pdb
• BMRB: 1672

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


• Deposited: 1993-10-14 Released: 1994-01-31 
• Deposition Author(s): Wand, A.J., Feng, Y., Sligar, S.G.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Submitted: 1 

Literature

Solution structure of apocytochrome b562.

Feng, Y., Sligar, S.G., Wand, A.J.

(1994) Nat Struct Biol 1: 30-35

• PubMed: 7656004 
• DOI: https://doi.org/10.1038/nsb0194-30
• Primary Citation Related Structures: 
  1APC


• PubMed Abstract: 
  

  The apoprotein is an important intermediate on the folding pathways of many haem proteins, yet a detailed structure of such an intermediate has remained elusive. Here we present the structure of apocytochrome b562 obtained by NMR spectroscopy. The apoprotein has a topology similar to the holoprotein. Nevertheless, significant differences in helix-helix packing between the two are evident. Much of the haem binding pocket in the apoprotein is preserved but exposed to solvent creating a large cavern. As apocytochrome b562 displays many of the physical characteristics ascribed to the molten globule state, these results help ellucidate the origin of several properties of the protein molten globule.

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Organizational Affiliation: 
• Department of Biochemistry, 415 Roger Adams Laboratory, University of Illinois at Urbana-Champaign 61801, USA.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 11.8 kDa 
• Atom Count: 826 
• Modeled Residue Count: 106 
• Deposited Residue Count: 106 
• Unique protein chains: 1

Macromolecules

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

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Submitted: 1 

Structure Validation

Entry History 

Deposition Data

• Released Date: 1994-01-31 
Deposition Author(s): Wand, A.J., Feng, Y., Sligar, S.G.

Revision History  

• Version 1.0: 1994-01-31
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2017-11-29
  Changes: Derived calculations, Other
• Version 1.4: 2024-04-10
  Changes: Data collection, Database references