1AVH

CRYSTAL AND MOLECULAR STRUCTURE OF HUMAN ANNEXIN V AFTER REFINEMENT. IMPLICATIONS FOR STRUCTURE, MEMBRANE BINDING AND ION CHANNEL FORMATION OF THE ANNEXIN FAMILY OF PROTEINS


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Work: 0.184 

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This is version 1.2 of the entry. See complete history


Literature

Crystal and molecular structure of human annexin V after refinement. Implications for structure, membrane binding and ion channel formation of the annexin family of proteins.

Huber, R.Berendes, R.Burger, A.Schneider, M.Karshikov, A.Luecke, H.Romisch, J.Paques, E.

(1992) J Mol Biol 223: 683-704

  • DOI: 10.1016/0022-2836(92)90984-r
  • Primary Citation of Related Structures:  
    1SAV, 1AVH, 1AVR

  • PubMed Abstract: 
  • Two crystal forms (P6(3) and R3) of human annexin V have been crystallographically refined at 2.3 A and 2.0 A resolution to R-values of 0.184 and 0.174, respectively, applying very tight stereochemical restraints with deviations from ideal geometry of 0.01 A and 2 degrees ...

    Two crystal forms (P6(3) and R3) of human annexin V have been crystallographically refined at 2.3 A and 2.0 A resolution to R-values of 0.184 and 0.174, respectively, applying very tight stereochemical restraints with deviations from ideal geometry of 0.01 A and 2 degrees. The three independent molecules (2 in P6(3), 1 in R3) are similar, with deviations in C alpha positions of 0.6 A. The polypeptide chain of 320 amino acid residues is folded into a planar cyclic arrangement of four repeats. The repeats have similar structures of five alpha-helical segments wound into a right-handed compact superhelix. Three calcium ion sites in repeats I, II and IV and two lanthanum ion sites in repeat I have been found in the R3 crystals. They are located at the convex face of the molecule opposite the N terminus. Repeat III has a different conformation at this site and no calcium bound. The calcium sites are similar to the phospholipase A2 calcium-binding site, suggesting analogy also in phospholipid interaction. The center of the molecule is formed by a channel of polar charged residues, which also harbors a chain of ordered water molecules conserved in the different crystal forms. Comparison with amino acid sequences of other annexins shows a high degree of similarity between them. Long insertions are found only at the N termini. Most conserved are the residues forming the metal-binding sites and the polar channel. Annexins V and VII form voltage-gated calcium ion channels when bound to membranes in vitro. We suggest that annexins bind with their convex face to membranes, causing local disorder and permeability of the phospholipid bilayers. Annexins are Janus-faced proteins that face phospholipid and water and mediate calcium transport.


    Related Citations: 
    • The Calcium Binding Sites in Human Annexin V by Crystal Structure Analysis at 2.0 Angstroms Resolution
      Huber, R., Schneider, M., Mayr, I., Roemisch, J., Paques, E.-P.
      (1990) FEBS Lett 275: 15
    • The Crystal and Molecular Structure of Human Annexin V, an Anticoagulant Protein that Binds to Calcium and Membranes
      Huber, R., Roemisch, J., Paques, E.-P.
      (1990) EMBO J 9: 3867

    Organizational Affiliation

    Max-Planck-Institut für Biochemie, Martinsried, Germany.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ANNEXIN VA, B320Homo sapiensMutation(s): 0 
Gene Names: ANXA5ANX5ENX2PP4
UniProt & NIH Common Fund Data Resources
Find proteins for P08758 (Homo sapiens)
Explore P08758 
Go to UniProtKB:  P08758
PHAROS:  P08758
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Work: 0.184 
  • Space Group: P 63
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 98.8α = 90
b = 98.8β = 90
c = 129γ = 120
Software Package:
Software NamePurpose
EREFrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • 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