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Structure of SCP-B a member of the Eqolisin family of Peptidases in a complex with a Tripeptide Ala-Ile-His

X-ray diffraction
2Å resolution
PDB entry 1s2k coloured by chain, front view.
PDB entry 1s2k coloured by chain, side view.
PDB entry 1s2k coloured by chain, top view.
Source organism: Scytalidium lignicola
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: Scytalidopepsin B and peptide
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Multimeric state: hetero dimer
Accessible surface area: 8726.76 Å2
Buried surface area: 593.31 Å2
Dissociation area: 296.65 Å2
Dissociation energy (ΔGdiss): 0.57 kcal/mol
Dissociation entropy (TΔSdiss): 4.29 kcal/mol
Symmetry number: 1
PDBe Complex ID: PDB-CPX-147328

Macromolecules

Scytalidopepsin B
Chain: A
Length: 206 amino acids
Theoretical weight: 21.55 KDa
Source organism: Scytalidium lignicola
Expression system: Escherichia coli
UniProt:
  • Canonical: P15369 (Residues: 55-260; Coverage: 86%)
Pfam: Peptidase A4 family
InterPro:
CATH: Peptidase G1
SCOP: Peptidase A4
Scytalidopepsin B in PDB entry 1s2k, assembly 1, front view.
Scytalidopepsin B in PDB entry 1s2k, assembly 1, side view.
Scytalidopepsin B in PDB entry 1s2k, assembly 1, top view.
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Ala-Ile-His tripeptide
Chain: B
Length: 3 amino acids
Theoretical weight: 340 Da
Source organism: Scytalidium lignicola
Expression system: Not provided
Ala-Ile-His tripeptide in PDB entry 1s2k, assembly 1, front view.
Ala-Ile-His tripeptide in PDB entry 1s2k, assembly 1, side view.
Ala-Ile-His tripeptide in PDB entry 1s2k, assembly 1, top view.
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