Structure analysis

Structure and rearrangements in the carboxy-terminal region of SpIH channels

X-ray diffraction
2.25Å resolution
Source organism: Mus musculus
Assemblies composition:
homo tetramer
monomeric (preferred)
homo octamer
Entry contents: 1 distinct polypeptide molecule

Assemblies

Assembly 1
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Multimeric state: homo tetramer
Accessible surface area: 38166.73 Å2
Buried surface area: 11879.63 Å2
Dissociation area: 4,666.47 Å2
Dissociation energy (ΔGdiss): 24.99 kcal/mol
Dissociation entropy (TΔSdiss): 40.29 kcal/mol
Symmetry number: 4
PDBe Complex ID: PDB-CPX-131576
Complex Portal ID: CPX-142
Assembly 2 (preferred)
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Multimeric state: monomeric
Accessible surface area: 11776.95 Å2
Buried surface area: 631.42 Å2
Dissociation area: 315.71 Å2
Dissociation energy (ΔGdiss): 3.29 kcal/mol
Dissociation entropy (TΔSdiss): 4.28 kcal/mol
Symmetry number: 1
PDBe Complex ID: PDB-CPX-131574
Assembly 3
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Multimeric state: homo octamer
Accessible surface area: 71363.17 Å2
Buried surface area: 28354.31 Å2
Dissociation area: 2,237.89 Å2
Dissociation energy (ΔGdiss): 20.89 kcal/mol
Dissociation entropy (TΔSdiss): 15.51 kcal/mol
Symmetry number: 8
PDBe Complex ID: PDB-CPX-131577
Assembly 4
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Multimeric state: homo tetramer
Accessible surface area: 37673.23 Å2
Buried surface area: 11999.09 Å2
Dissociation area: 4,736.92 Å2
Dissociation energy (ΔGdiss): 20.48 kcal/mol
Dissociation entropy (TΔSdiss): 40.3 kcal/mol
Symmetry number: 4
PDBe Complex ID: PDB-CPX-131576
Complex Portal ID: CPX-142

Macromolecules

Chains: A, B
Length: 200 amino acids
Theoretical weight: 23.43 KDa
Source organism: Mus musculus
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: O88703 (Residues: 443-640; Coverage: 23%)
Gene names: Bcng2, Hac1, Hcn2
Pfam: Cyclic nucleotide-binding domain
InterPro:
CATH:
SCOP: cAMP-binding domain

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