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Probing the surface of human carbonic anhydrase for clues towards the design of isoform specific inhibitors.


ABSTRACT: The alpha carbonic anhydrases (?-CAs) are a group of structurally related zinc metalloenzymes that catalyze the reversible hydration of CO2 to HCO3(-). Humans have 15 different ?-CAs with numerous physiological roles and expression patterns. Of these, 12 are catalytically active, and abnormal expression and activities are linked with various diseases, including glaucoma and cancer. Hence there is a need for CA isoform specific inhibitors to avoid off-target CA inhibition, but due to the high amino acid conservation of the active site and surrounding regions between each enzyme, this has proven difficult. However, residues towards the exit of the active site are variable and can be exploited to design isoform selective inhibitors. Here we discuss and characterize this region of "selective drug targetability" and how these observations can be utilized to develop isoform selective CA inhibitors.

SUBMITTER: Pinard MA 

PROVIDER: S-EPMC4355338 | biostudies-literature | 2015

REPOSITORIES: biostudies-literature

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Probing the surface of human carbonic anhydrase for clues towards the design of isoform specific inhibitors.

Pinard Melissa A MA   Mahon Brian B   McKenna Robert R  

BioMed research international 20150224


The alpha carbonic anhydrases (α-CAs) are a group of structurally related zinc metalloenzymes that catalyze the reversible hydration of CO2 to HCO3(-). Humans have 15 different α-CAs with numerous physiological roles and expression patterns. Of these, 12 are catalytically active, and abnormal expression and activities are linked with various diseases, including glaucoma and cancer. Hence there is a need for CA isoform specific inhibitors to avoid off-target CA inhibition, but due to the high ami  ...[more]

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