Title : Dissecting the inhibition mechanism of cytosolic versus transmembrane carbonic anhydrases by ESR.

Pub. Date : 2009 Oct 22

PMID : 19778001






2 Functional Relationships(s)
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1 Spin-labeled sulfonamides incorporating TEMPO moieties showed efficient activity as inhibitors of the metalloenzyme carbonic anhydrase (CA, EC 4.2.1.1) and, in particular, of the physiologically relevant isoenzymes hCA II, hCA IX, and hCA XIV. Sulfonamides carbonic anhydrase 2 Homo sapiens
2 Analysis and fitting of the ESR spectra of several spin-labeled sulfonamides with isoforms CA II (cytosolic), CA IX (catalytic domain and full length transmembrane, tumor-associated isoform) and CA XIV (transmembrane isozyme) provided information about polarity and dynamics of specific microenvironments sensed by the nitroxyl group within the active site cavity of these isozymes. Sulfonamides carbonic anhydrase 2 Homo sapiens