PDBe 1sr5

X-ray diffraction
3.1Å resolution

ANTITHROMBIN-ANHYDROTHROMBIN-HEPARIN TERNARY COMPLEX STRUCTURE

Released:

Function and Biology Details

Reaction catalysed:
Selective cleavage of Arg-|-Gly bonds in fibrinogen to form fibrin and release fibrinopeptides A and B. 
Biochemical function:
Biological process:
Cellular component:

Structure analysis Details

Assembly composition:
hetero trimer (preferred)
Entry contents:
3 distinct polypeptide molecules
Macromolecules (3 distinct):
Thrombin light chain Chain: B
Molecule details ›
Chain: B
Length: 36 amino acids
Theoretical weight: 4.1 KDa
Source organism: Homo sapiens
UniProt:
  • Canonical: P00734 (Residues: 328-363; Coverage: 6%)
Gene name: F2
Thrombin heavy chain Chain: C
Molecule details ›
Chain: C
Length: 259 amino acids
Theoretical weight: 29.78 KDa
Source organism: Homo sapiens
UniProt:
  • Canonical: P00734 (Residues: 364-622; Coverage: 43%)
Gene name: F2
Sequence domains: Trypsin
Structure domains: Trypsin-like serine proteases
Antithrombin-III Chain: A
Molecule details ›
Chain: A
Length: 432 amino acids
Theoretical weight: 49.1 KDa
Source organism: Homo sapiens
UniProt:
  • Canonical: P01008 (Residues: 33-464; Coverage: 100%)
Gene names: AT3, PRO0309, SERPINC1
Sequence domains: Serpin (serine protease inhibitor)
Structure domains:

Ligands and Environments

3 bound ligands:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: APS BEAMLINE 22-ID
Spacegroup: P212121
Unit cell:
a: 90.04Å b: 90.7Å c: 159.9Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.227 0.227 0.278