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H. influenzae beta-carbonic anhydrase, variant Y181F with 100 mM bicarbonate

X-ray diffraction
2.301Å resolution
PDB entry 3e2a coloured by chain, front view.
PDB entry 3e2a coloured by chain, side view.
PDB entry 3e2a coloured by chain, top view.
Source organism: Haemophilus influenzae
Assembly composition:
homo tetramer (preferred)
Entry contents: 1 distinct polypeptide molecule

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Assemblies

Assembly 1
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Assembly Name: Carbonic anhydrase 2
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Multimeric state: homo tetramer
Accessible surface area: 31518.14 Å2
Buried surface area: 17731.8 Å2
Dissociation area: 6,107.46 Å2
Dissociation energy (ΔGdiss): 96.9 kcal/mol
Dissociation entropy (TΔSdiss): 15.5 kcal/mol
Symmetry number: 4
PDBe Complex ID: PDB-CPX-155253
Assembly 2 (preferred)
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Assembly Name: Carbonic anhydrase 2
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Multimeric state: homo tetramer
Accessible surface area: 31399.12 Å2
Buried surface area: 18015.19 Å2
Dissociation area: 2,349.75 Å2
Dissociation energy (ΔGdiss): 57.07 kcal/mol
Dissociation entropy (TΔSdiss): 14.25 kcal/mol
Symmetry number: 4
PDBe Complex ID: PDB-CPX-155253

Macromolecules

Carbonic anhydrase 2
Chains: A, B, C, D, E, F
Length: 229 amino acids
Theoretical weight: 26.27 KDa
Source organism: Haemophilus influenzae
Expression system: Escherichia coli
UniProt:
  • Canonical: P45148 (Residues: 1-229; Coverage: 100%)
Gene names: HI_1301, can
Pfam: Carbonic anhydrase
InterPro:
CATH: Carbonic anhydrase
Carbonic anhydrase 2 in PDB entry 3e2a, assembly 2, front view.
Carbonic anhydrase 2 in PDB entry 3e2a, assembly 2, side view.
Carbonic anhydrase 2 in PDB entry 3e2a, assembly 2, top view.
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