Abstract: Human carbonic anhydrase Ⅱ is one of the most efficient one in carbonic anhydrase isozymes, which catalyzes the reversible hydration dehydration of CO2 and water : CO₂ + H₂O\ HCO₃^- + H⁺. It is found in virtually every tissue
and cell type, and involves in many human physiological and pathological processes, such as human acid-base balance, glaucoma, osteoporosis, and cancer. Since discovered in 1940, carbonic anhydrase Ⅱ has been an important drug target with more attention. Up to now, many inhibitors were discovered including some clinical therapeutic drugs. This paper reviewed recent developments in structures, functions and inhibitors of human carbonic anhydrase Ⅱ.

Key words: Carbonic Anhydrase Ⅱ