1HM6

X-RAY STRUCTURE OF FULL-LENGTH ANNEXIN 1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.259 
  • R-Value Work: 0.224 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

X-ray structure of full-length annexin 1 and implications for membrane aggregation.

Rosengarth, A.Gerke, V.Luecke, H.

(2001) J.Mol.Biol. 306: 489-498

  • DOI: 10.1006/jmbi.2000.4423

  • PubMed Abstract: 
  • Annexins comprise a multigene family of Ca2+ and phospholipid- binding proteins. They consist of a conserved C-terminal or core domain that confers Ca2+-dependent phospholipid binding and an N-terminal domain that is variable in sequence and length a ...

    Annexins comprise a multigene family of Ca2+ and phospholipid- binding proteins. They consist of a conserved C-terminal or core domain that confers Ca2+-dependent phospholipid binding and an N-terminal domain that is variable in sequence and length and responsible for the specific properties of each annexin. Crystal structures of various annexin core domains have revealed a high degree of similarity. From these and other studies it is evident that the core domain harbors the calcium-binding sites that interact with the phospholipid headgroups. However, no structure has been reported of an annexin with a complete N-terminal domain. We have now solved the crystal structure of such a full-length annexin, annexin 1. Annexin 1 is active in membrane aggregation and its refined 1.8 A structure shows an alpha-helical N-terminal domain connected to the core domain by a flexible linker. It is surprising that the two alpha-helices present in the N-terminal domain of 41 residues interact intimately with the core domain, with the amphipathic helix 2-12 of the N-terminal domain replacing helix D of repeat III of the core. In turn, helix D is unwound into a flap now partially covering the N-terminal helix. Implications for membrane aggregation will be discussed and a model of aggregation based on the structure will be presented.


    Related Citations: 
    • Crystallization and Preliminary X-ray Analysis of Full-length Annexin I Comprising the Core and N-terminal Domain.
      Rosengarth, A.,Luecke, H.
      (2000) Acta Crystallogr.,Sect.D 56: 1459


    Organizational Affiliation

    Department of Molecular Biology and Biochemistry and UCI Program in Macromolecular Structure, University of California, 3205 Biological Sciences II, Irvine, CA, 92697-3900, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ANNEXIN 1
A, B
346Sus scrofaMutation(s): 0 
Gene Names: ANXA1 (ANX1)
Find proteins for P19619 (Sus scrofa)
Go to Gene View: ANXA1
Go to UniProtKB:  P19619
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A, B
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.259 
  • R-Value Work: 0.224 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 63.644α = 90.00
b = 96.327β = 90.00
c = 127.350γ = 90.00
Software Package:
Software NamePurpose
X-PLORmodel building
CNSrefinement
X-PLORphasing
SCALEPACKdata scaling
DENZOdata reduction
CCP4model building
CCP4phasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2001-02-28
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance