PDBe 4knm

X-ray diffraction
1.9Å resolution

Crystal structure of human carbonic anhydrase isozyme XIII with 2-Chloro-4-{[(4,6-dimethylpyrimidin-2-yl)sulfanyl]acetyl}benzenesulfonamide


Function and Biology Details

Structure analysis Details

Assembly composition:
monomeric (preferred)
Entry contents:
1 distinct polypeptide molecule
Carbonic anhydrase 13 Chains: A, B
Molecule details ›
Chains: A, B
Length: 263 amino acids
Theoretical weight: 29.61 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli
  • Canonical: Q8N1Q1 (Residues: 1-262; Coverage: 100%)
Gene name: CA13
Sequence domains: Eukaryotic-type carbonic anhydrase
Structure domains: Alpha carbonic anhydrase

Ligands and Environments

3 bound ligands:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: RIGAKU MICROMAX-007 HF
Spacegroup: P21
Unit cell:
a: 57.591Å b: 58.165Å c: 71.075Å
α: 90° β: 92.16° γ: 90°
R R work R free
0.184 0.178 0.235
Expression system: Escherichia coli