2RAN

RAT ANNEXIN V CRYSTAL STRUCTURE: CA2+-INDUCED CONFORMATIONAL CHANGES

• PDB DOI: https://doi.org/10.2210/pdb2RAN/pdb

• Classification: CALCIUM/PHOSPHOLIPID-BINDING PROTEIN
• Organism(s): Rattus norvegicus
• Mutation(s): No 


• Deposited: 1994-09-01 Released: 1994-11-30 
• Deposition Author(s): Concha, N.O., Head, J.F., Kaetzel, M.A., Dedman, J.R., Seaton, B.A.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.89 Å
• R-Value Work: 0.212 
• R-Value Observed: 0.212 

Literature

Rat annexin V crystal structure: Ca(2+)-induced conformational changes.

Concha, N.O., Head, J.F., Kaetzel, M.A., Dedman, J.R., Seaton, B.A.

(1993) Science 261: 1321-1324

• PubMed: 8362244 
• DOI: https://doi.org/10.1126/science.8362244
• Primary Citation of Related Structures:  
  2RAN


• PubMed Abstract: 
  

  Annexins are a family of calcium- and phospholipid-binding proteins implicated in mediating membrane-related processes such as secretion, signal transduction, and ion channel activity. The crystal structure of rat annexin V was solved to 1.9 angstrom resolution by multiple isomorphous replacement. Unlike previously solved annexin V structures, all four domains bound calcium in this structure. Calcium binding in the third domain induced a large relocation of the calcium-binding loop regions, exposing the single tryptophan residue to the solvent. These alterations in annexin V suggest a role for domain 3 in calcium-triggered interaction with phospholipid membranes.

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Organizational Affiliation: 

Department of Physiology, Boston University School of Medicine, MA 02118.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 35.9 kDa 
• Atom Count: 2,612 
• Modelled Residue Count: 316 
• Deposited Residue Count: 316 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
ANNEXIN V	A	316	Rattus norvegicus	Mutation(s): 0
UniProt
Find proteins for P14668 (Rattus norvegicus) Explore P14668  Go to UniProtKB:  P14668

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SO4	I [auth A], J [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
CA	B [auth A], C [auth A], D [auth A], E [auth A], F [auth A], G [auth A], H [auth A]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.89 Å
• R-Value Work: 0.212 
• R-Value Observed: 0.212 
• Space Group: H 3

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 156.9	α = 90
b = 156.9	β = 90
c = 37.03	γ = 120

Software Package:

Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 1994-11-30 
Deposition Author(s): Concha, N.O., Head, J.F., Kaetzel, M.A., Dedman, J.R., Seaton, B.A.

Revision History  

• Version 1.0: 1994-11-30
  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: 2024-02-21
  Changes: Data collection, Database references, Derived calculations, Other