1AVC

BOVINE ANNEXIN VI (CALCIUM-BOUND)

• PDB DOI: https://doi.org/10.2210/pdb1AVC/pdb

• Classification: CALCIUM/PHOSPHOLIPID-BINDING PROTEIN
• Organism(s): Bos taurus
• Mutation(s): No 


• Deposited: 1997-09-16 Released: 1998-01-28 
• Deposition Author(s): Avila-Sakar, A.J., Creutz, C.E., Kretsinger, R.H.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.90 Å
• R-Value Free: 0.268 
• R-Value Work: 0.205 
• R-Value Observed: 0.205 

Literature

Crystal structure of bovine annexin VI in a calcium-bound state.

Avila-Sakar, A.J., Creutz, C.E., Kretsinger, R.H.

(1998) Biochim Biophys Acta 1387: 103-116

• PubMed: 9748523 
• DOI: https://doi.org/10.1016/s0167-4838(98)00111-3
• Primary Citation of Related Structures:  
  1AVC


• PubMed Abstract: 
  

  The crystal structure of a calcium-bound form of bovine annexin VI has been determined with X-ray diffraction data to 2.9 A by molecular replacement. Six Ca2+ ions were found, five in AB loops, one in a DE loop. Two loops (II-AB, which binds calcium, and V-AB, which does not) have conformations that differ significantly from those in calcium-free, human recombinant annexin VI. There are only small differences between the calci- and the apo-annexin VI in the rest of the molecule. Calcium by itself does not promote a major conformational change.

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Organizational Affiliation: 

Department of Pharmacology, University of Virginia, Charlottesville, VA 22908, USA. [e-mail]

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 76.25 kDa 
• Atom Count: 5,231 
• Modelled Residue Count: 642 
• Deposited Residue Count: 673 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
ANNEXIN VI	A	673	Bos taurus	Mutation(s): 0
UniProt
Find proteins for P79134 (Bos taurus) Explore P79134  Go to UniProtKB:  P79134

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CA	B [auth A], C [auth A], D [auth A], E [auth A], F [auth A], G [auth A]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.90 Å
• R-Value Free: 0.268 
• R-Value Work: 0.205 
• R-Value Observed: 0.205 
• Space Group: P 4₃

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 67.404	α = 90
b = 67.404	β = 90
c = 200.078	γ = 90

Software Package:

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

Structure Validation

Entry History 

Deposition Data

• Released Date: 1998-01-28 
Deposition Author(s): Avila-Sakar, A.J., Creutz, C.E., Kretsinger, R.H.

Revision History  

• Version 1.0: 1998-01-28
  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: 2023-08-02
  Changes: Database references, Derived calculations, Other, Refinement description