Enzyme Nomenclature ◼ Names usually end in –ase. ◼ Usually named after substrates they act upon e.g. urea - urease lactose - lactase or the resulting type of chemical reaction e.g. hydrolysis - hydrolases oxidation - oxidases ◼ This rule does not always apply. E.g. ficin found in figs and papain in papayas.Enzyme Nomenclature ◼ Names usually end in –ase. ◼ Usually named after substrates they act upon e.g. urea - urease lactose - lactase or the resulting type of chemical reaction e.g. hydrolysis - hydrolases oxidation - oxidases ◼ This rule does not always apply. E.g. ficin found in figs and papain in papayas