1A8B

RAT ANNEXIN V COMPLEXED WITH GLYCEROPHOSPHOETHANOLAMINE

• PDB DOI: https://doi.org/10.2210/pdb1A8B/pdb

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


• Deposited: 1998-03-23 Released: 1998-06-17 
• Deposition Author(s): Swairjo, M.A., Concha, N.O., Kaetzel, M.A., Dedman, J.R., Seaton, B.A.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Work: 0.200 
• R-Value Observed: 0.200 

Literature

Ca(2+)-bridging mechanism and phospholipid head group recognition in the membrane-binding protein annexin V.

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

(1995) Nat Struct Biol 2: 968-974

• PubMed: 7583670 
• DOI: https://doi.org/10.1038/nsb1195-968
• Primary Citation of Related Structures:  
  1A8A, 1A8B


• PubMed Abstract: 
  

  Structural evidence is presented for a 'Ca(2+)-bridging' mechanism, proposed for Ca(2+)-binding interfacial membrane proteins such as annexins, protein kinase C, and certain coagulation proteins. Crystal structures of Ca(2+)-annexin V complexes with phospholipid polar heads provide molecular details of 'Ca(2+)-bridges' as key features in the membrane attachment exhibited by these proteins. Distinct binding sites for phospholipid head groups are observed, including a novel, double-Ca2+ recognition site for phosphoserine that may serve as a phosphatidylserine receptor site in vivo.

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Organizational Affiliation: 

Department of Physiology, Boston University School of Medicine, Massachusetts 02118, USA.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 36.3 kDa 
• Atom Count: 2,681 
• Modelled Residue Count: 318 
• Deposited Residue Count: 319 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
ANNEXIN V	A	319	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
GPE	L [auth A]	L-ALPHA-GLYCEROPHOSPHORYLETHANOLAMINE C5 H14 N O6 P JZNWSCPGTDBMEW-RXMQYKEDSA-N
CA	B [auth A], C [auth A], D [auth A], E [auth A], F [auth A], G [auth A], H [auth A], I [auth A], J [auth A], K [auth A]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Work: 0.200 
• R-Value Observed: 0.200 
• Space Group: H 3

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 157.47	α = 90
b = 157.47	β = 90
c = 37.44	γ = 120

Software Package:

Software Name	Purpose
X-PLOR	refinement
SCALEPACK	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 1998-06-17 
Deposition Author(s): Swairjo, M.A., Concha, N.O., Kaetzel, M.A., Dedman, J.R., Seaton, B.A.

Revision History  

• Version 1.0: 1998-06-17
  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: 2024-02-07
  Changes: Data collection, Database references, Derived calculations, Other
• Version 1.4: 2024-10-23
  Changes: Structure summary