2PQS

Crystal Structure of the Bovine Lactadherin C2 Domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.273 
  • R-Value Work: 0.235 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Crystal structure of the bovine lactadherin C2 domain, a membrane binding motif, shows similarity to the C2 domains of factor V and factor VIII.

Lin, L.Huai, Q.Huang, M.Furie, B.Furie, B.C.

(2007) J.Mol.Biol. 371: 717-724

  • DOI: 10.1016/j.jmb.2007.05.054

  • PubMed Abstract: 
  • Lactadherin, a glycoprotein secreted by a variety of cell types, contains two EGF domains and two C domains with sequence homology to the C domains of blood coagulation proteins factor V and factor VIII. Like these proteins, lactadherin binds to phos ...

    Lactadherin, a glycoprotein secreted by a variety of cell types, contains two EGF domains and two C domains with sequence homology to the C domains of blood coagulation proteins factor V and factor VIII. Like these proteins, lactadherin binds to phosphatidylserine (PS)-containing membranes with high affinity. We determined the crystal structure of the bovine lactadherin C2 domain (residues 1 to 158) at 2.4 A. The lactadherin C2 structure is similar to the C2 domains of factors V and VIII (rmsd of C(alpha) atoms of 0.9 A and 1.2 A, and sequence identities of 43% and 38%, respectively). The lactadherin C2 domain has a discoidin-like fold containing two beta-sheets of five and three antiparallel beta-strands packed against one another. The N and C termini are linked by a disulfide bridge between Cys1 and Cys158. One beta-turn and two loops containing solvent-exposed hydrophobic residues extend from the C2 domain beta-sandwich core. In analogy with the C2 domains of factors V and VIII, some or all of these solvent-exposed hydrophobic residues, Trp26, Leu28, Phe31, and Phe81, likely participate in membrane binding. The C2 domain of lactadherin may serve as a marker of cell surface phosphatidylserine exposure and may have potential as a unique anti-thrombotic agent.


    Organizational Affiliation

    Division of Hemostasis and Thrombosis, Beth Israel Deaconess Medical Center and Department of Medicine, Harvard Medical School, Boston, MA 02215, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Lactadherin
A, B, C, D
159Bos taurusMutation(s): 0 
Gene Names: MFGE8
Find proteins for Q95114 (Bos taurus)
Go to Gene View: MFGE8
Go to UniProtKB:  Q95114
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.273 
  • R-Value Work: 0.235 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 108.123α = 90.00
b = 107.788β = 90.00
c = 82.754γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data scaling
HKL-2000data reduction
HKL-2000data collection
AMoREphasing
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2007-05-02 
  • Released Date: 2007-08-07 
  • Deposition Author(s): Huang, M., Furie, B.C.

Revision History 

  • Version 1.0: 2007-08-07
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance