Zinc is the microelement necessary for human body, which exists in human body in the manner of protein and metalenzyme, performing various important biological functions.
锌是人体必需的微量元素，锌以蛋白质和金属酶的形式存在于人体中，履行着各种重要的生物功能。
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Carbonic anhydrase is a ubiquitous metalenzyme existed in organism which can catalyze the reversible hydration reaction of CO2. Microorganism is an important source of carbonic anhydrase.