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4hu1, resolution 1.95Å ()
Ligands: , , ,
Gene: CA13 (Homo sapiens)
Activity: Carbonate dehydratase, with EC number
Related: 4ht2, 4ht0

Resources: FirstGlance, OCA, RCSB, PDBsum
Coordinates: save as pdb, mmCIF, xml

Crystal structure of human carbonic anhydrase isozyme XIII with the inhibitor.

Publication Abstract from PubMed

A series of 4-substituted-2,3,5,6-tetrafluorobenezenesulfonamides were synthesized and their binding potencies as inhibitors of recombinant human carbonic anhydrase isozymes I, II, VII, XII, and XIII were determined by the thermal shift assay, isothermal titration calorimetry, and stop-flow CO2 hydration assay. All fluorinated benzenesulfonamides exhibited nanomolar binding potency toward tested CAs and fluorinated benzenesulfonamides posessed higher binding potency than non-fluorinated compounds. The crystal structures of 4-[(4,6-dimethylpyrimidin-2-yl)thio]-2,3,5,6-tetrafluorobenzenesulfonamide in complex with CA II and CA XII, and 2,3,5,6-tetrafluoro-4-[(2-hydroxyethyl)sulfonyl]benzenesulfonamide in complex with CA XIII were determined. The observed dissociation constants for several fluorinated compounds reached subnanomolar range for CA I isozyme. The affinity and the selectivity of the compounds towards tested isozymes are presented.

4-Substituted-2,3,5,6-tetrafluorobenzenesulfonamides as inhibitors of carbonic anhydrases I, II, VII, XII, and XIII., Dudutiene V, Zubriene A, Smirnov A, Gylyte J, Timm D, Manakova E, Grazulis S, Matulis D, Bioorg Med Chem. 2013 Apr 1;21(7):2093-106. doi: 10.1016/j.bmc.2013.01.008. Epub , 2013 Jan 16. PMID:23394791

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.


[CAH13_HUMAN] Reversible hydration of carbon dioxide.

About this Structure

4hu1 is a 2 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA.

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