Katal
SI unit of catalytic activity From Wikipedia, the free encyclopedia
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The katal (symbol: kat) is the SI unit of catalytic activity. It quantifies the rate at which a catalyst (such as an enzyme) converts reactants in a chemical reaction. One katal is the catalytic activity that raises the rate of conversion by one mole per second.
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The katal has various SI multiples. These range from femtokatal (fkat), which is 10-15 katals, to megakatal (Mkat), which is 103 katals. Since the katal is quite large for most enzymatic reactions, the nanokatal (nkat) is commonly used in practice.
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