Structure analysis

Potassium Channel KcsA-Fab complex in high concentration of K+

X-ray diffraction
2Å resolution
Assembly composition:
hetero dodecamer (preferred)
Entry contents: 3 distinct polypeptide molecules

Assemblies

Assembly 1 (preferred)
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Multimeric state: hetero dodecamer
Accessible surface area: 87546.29 Å2
Buried surface area: 35186.22 Å2
Dissociation area: 5,584.88 Å2
Dissociation energy (ΔGdiss): -21.88 kcal/mol
Dissociation entropy (TΔSdiss): 58.78 kcal/mol
Symmetry number: 4
PDBe Complex ID: PDB-CPX-209448

Macromolecules

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Chain: C
Length: 124 amino acids
Theoretical weight: 13.21 KDa
Source organism: Streptomyces lividans
Expression system: Escherichia coli
UniProt:
  • Canonical: P0A334 (Residues: 1-124; Coverage: 78%)
Gene names: kcsA, skc1
Pfam: Ion channel
InterPro: Potassium channel domain
CATH: Helix Hairpins
SCOP: Voltage-gated potassium channels

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