PDBe 1zfk

X-ray diffraction
1.56Å resolution

carbonic anhydrase II in complex with N-4-sulfonamidphenyl-N'-4-methylbenzosulfonylurease as sulfonamide inhibitor

Source organism: Homo sapiens
Entry authors: Honndorf VS, Heine A, Klebe G, Supuran CT

Function and Biology Details

Reaction catalysed:
H(2)CO(3) = CO(2) + H(2)O
Biochemical function:
Biological process:
Cellular component:

Structure analysis Details

Assembly composition:
monomeric (preferred)
Entry contents:
1 distinct polypeptide molecule
Carbonic anhydrase 2 Chain: A
Molecule details ›
Chain: A
Length: 259 amino acids
Theoretical weight: 29.16 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli
  • Canonical: P00918 (Residues: 2-260; Coverage: 100%)
Gene name: CA2
Sequence domains: Eukaryotic-type carbonic anhydrase
Structure domains: Alpha carbonic anhydrase

Ligands and Environments

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: RIGAKU
Spacegroup: P21
Unit cell:
a: 42.49Å b: 41.51Å c: 72.41Å
α: 90° β: 104.45° γ: 90°
R R work R free
0.164 0.161 0.224
Expression system: Escherichia coli