Structure analysis

Complex of mammalian actin with toxofilin from toxoplasma gondii

X-ray diffraction
2.5Å resolution
Assemblies composition:
hetero dimer (preferred)
hetero tetramer
Entry contents: 2 distinct polypeptide molecules

Assemblies

Assembly 1 (preferred)
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Multimeric state: hetero dimer
Accessible surface area: 22867.33 Å2
Buried surface area: 4605.29 Å2
Dissociation area: 1,775.06 Å2
Dissociation energy (ΔGdiss): 15.06 kcal/mol
Dissociation entropy (TΔSdiss): 13.29 kcal/mol
Symmetry number: 1
PDBe Complex ID: PDB-CPX-159311
Assembly 2
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Multimeric state: hetero tetramer
Accessible surface area: 39544.08 Å2
Buried surface area: 15418.85 Å2
Dissociation area: 3,162.45 Å2
Dissociation energy (ΔGdiss): 32.89 kcal/mol
Dissociation entropy (TΔSdiss): 15.21 kcal/mol
Symmetry number: 2
PDBe Complex ID: PDB-CPX-159320

Macromolecules

Chain: A
Length: 375 amino acids
Theoretical weight: 41.88 KDa
Source organism: Oryctolagus cuniculus
UniProt:
  • Canonical: P68135 (Residues: 3-377; Coverage: 100%)
Gene names: ACTA, ACTA1
Pfam: Actin
InterPro:
CATH:

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Chain: T
Length: 129 amino acids
Theoretical weight: 14.78 KDa
Source organism: Toxoplasma gondii
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: Q9NG25 (Residues: 69-196; Coverage: 58%)
Gene names: TGRH88_040440, toxofilin
Pfam: Toxofilin-like domain
CATH: Single alpha-helices involved in coiled-coils or other helix-helix interfaces

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