1BR8

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


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å

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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
  • Primary Citation of Related Structures:  
    1BR8

  • 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 the reactive loop in the latent and cleaved forms of antithrombin ...

    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:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
PROTEIN (ANTITHROMBIN-III)B [auth I], A [auth L]432Homo sapiensMutation(s): 0 
Gene Names: SERPINC1AT3PRO0309
UniProt & NIH Common Fund Data Resources
Find proteins for P01008 (Homo sapiens)
Explore P01008 
Go to UniProtKB:  P01008
PHAROS:  P01008
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
PROTEIN (PEPTIDE)C [auth P]12N/AMutation(s): 0 
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 69.12α = 90
b = 101.69β = 104.36
c = 87.02γ = 90
Software Package:
Software NamePurpose
MOSFLMdata reduction
CCP4data reduction
AMoREphasing
TNTrefinement
CCP4data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

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