1ANT

BIOLOGICAL IMPLICATIONS OF A 3 ANGSTROMS STRUCTURE OF DIMERIC ANTITHROMBIN

• PDB DOI: https://doi.org/10.2210/pdb1ANT/pdb

• Classification: SERINE PROTEASE INHIBITOR
• Organism(s): Homo sapiens
• Mutation(s): No 


• Deposited: 1994-02-28 Released: 1995-01-26 
• Deposition Author(s): Carrell, R.W., Stein, P.E., Fermi, G., Wardell, M.R.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.00 Å
• R-Value Work: 0.214 
• R-Value Observed: 0.214 

Literature

Biological implications of a 3 A structure of dimeric antithrombin.

Carrell, R.W., Stein, P.E., Fermi, G., Wardell, M.R.

(1994) Structure 2: 257-270

• PubMed: 8087553 
• DOI: https://doi.org/10.1016/s0969-2126(00)00028-9
• Primary Citation of Related Structures:  
  1ANT


• PubMed Abstract: 
  

  Antithrombin, a member of the serpin family of inhibitors, controls coagulation in human plasma by forming complexes with thrombin and other coagulation proteases in a process greatly accelerated by heparin. The structures of several serpins have been determined but not in their active conformations. We have determined the structure of intact antithrombin in order to study its mechanism of activation, particularly with respect to heparin, and the dysfunctions of this mechanism that predispose individuals to thrombotic disease.

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Organizational Affiliation: 

Department of Haematology, University of Cambridge, UK.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 98.2 kDa 
• Atom Count: 6,371 
• Modelled Residue Count: 794 
• Deposited Residue Count: 864 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
ANTITHROMBIN	A [auth L], B [auth I]	432	Homo sapiens	Mutation(s): 0
UniProt & NIH Common Fund Data Resources
Find proteins for P01008 (Homo sapiens) Explore P01008  Go to UniProtKB:  P01008
PHAROS:  P01008 GTEx:  ENSG00000117601

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.00 Å
• R-Value Work: 0.214 
• R-Value Observed: 0.214 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 70.06	α = 90
b = 101.52	β = 105.9
c = 90.45	γ = 90

Software Package:

Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 1995-01-26 
Deposition Author(s): Carrell, R.W., Stein, P.E., Fermi, G., Wardell, M.R.

Revision History  

• Version 1.0: 1995-01-26
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance