1BR8

IMPLICATIONS FOR FUNCTION AND THERAPY OF A 2.9A STRUCTURE OF BINARY-COMPLEXED ANTITHROMBIN


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.9 Å

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Implications for function and therapy of a 2.9 A structure of binary-complexed antithrombin.

Skinner, R.Chang, W.S.Jin, L.Pei, X.Huntington, J.A.Abrahams, J.P.Carrell, R.W.Lomas, D.A.

(1998) J.Mol.Biol. 283: 9-14

  • DOI: 10.1006/jmbi.1998.2083

  • PubMed Abstract: 
  • The crystal structure of a binary complex of human antithrombin with a peptide of the same sequence as its reactive loop (P14-P3) has been determined at 2.9 A. The peptide binds as the middle strand s4A in the A beta-sheet, homologously to that of th ...

    The crystal structure of a binary complex of human antithrombin with a peptide of the same sequence as its reactive loop (P14-P3) has been determined at 2.9 A. The peptide binds as the middle strand s4A in the A beta-sheet, homologously to that of the reactive loop in the latent and cleaved forms of antithrombin. Peptide binding results in the complete expulsion of the hinge region of the loop from the A beta-sheet although the conformation differs from that of heparin-activated antithrombin. The 36-fold increase in the rate of reaction of the binary complex with factor Xa indicates that full loop expulsion alone is not sufficient for complete heparin activation of antithrombin but that this is also dependent on the overall conformation of the molecule. Previous studies have demonstrated that reactive loop peptides can block or reverse the polymerisation of serpins associated with cirrhosis and thrombosis. The antithrombin binary complex structure defines the precise localisation of the blocking peptide in a serpin and provides the basis for rational drug design for mimetics that will prevent polymerisation in vivo and so ameliorate the associated disease.


    Organizational Affiliation

    Department of Haematology, University of Cambridge, Hills Road, Cambridge, CB2 2QH, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (ANTITHROMBIN-III)
L, I
432Homo sapiensMutation(s): 0 
Gene Names: SERPINC1 (AT3)
Find proteins for P01008 (Homo sapiens)
Go to Gene View: SERPINC1
Go to UniProtKB:  P01008
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (PEPTIDE)
P
12N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.9 Å
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 69.120α = 90.00
b = 101.690β = 104.36
c = 87.020γ = 90.00
Software Package:
Software NamePurpose
AMoREphasing
TNTrefinement
CCP4data reduction
MOSFLMdata reduction
CCP4data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1998-09-02
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance