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CRYSTAL STRUCTURE OF ABRIN-A

X-ray diffraction
2.14Å resolution
PDB entry 1abr coloured by chain, front view.
PDB entry 1abr coloured by chain, side view.
PDB entry 1abr coloured by chain, top view.
Source organism: Abrus precatorius
Assembly composition:
hetero dimer (preferred)
Entry contents: 2 distinct polypeptide molecules

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Assemblies

Assembly 1 (preferred)
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Assembly Name: Abrin-a B chain
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Multimeric state: hetero dimer
Accessible surface area: 21383.98 Ã…2
Buried surface area: 6073.47 Ã…2
Dissociation area: 1,834.92 Ã…2
Dissociation energy (ΔGdiss): 4.87 kcal/mol
Dissociation entropy (TΔSdiss): 13.2 kcal/mol
Symmetry number: 1
PDBe Complex ID: PDB-CPX-145673

Macromolecules

Abrin-a A chain
Chain: A
Length: 251 amino acids
Theoretical weight: 28.12 KDa
Source organism: Abrus precatorius
Expression system: Not provided
UniProt:
  • Canonical: P11140 (Residues: 1-251; Coverage: 48%)
Pfam: Ribosome inactivating protein
InterPro:
CATH:
SCOP: Plant cytotoxins
Abrin-a A chain in PDB entry 1abr, assembly 1, front view.
Abrin-a A chain in PDB entry 1abr, assembly 1, side view.
Abrin-a A chain in PDB entry 1abr, assembly 1, top view.
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Abrin-a B chain
Chain: B
Length: 267 amino acids
Theoretical weight: 30.11 KDa
Source organism: Abrus precatorius
Expression system: Not provided
UniProt:
  • Canonical: P11140 (Residues: 262-528; Coverage: 51%)
Pfam: Ricin-type beta-trefoil lectin domain
InterPro:
CATH: Trefoil (Acidic Fibroblast Growth Factor, subunit A)
SCOP: Ricin B-like
Abrin-a B chain in PDB entry 1abr, assembly 1, front view.
Abrin-a B chain in PDB entry 1abr, assembly 1, side view.
Abrin-a B chain in PDB entry 1abr, assembly 1, top view.
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