zymogen(redirected from Protein precursors)
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(Biochemistry) biochem any of a group of compounds that are inactive precursors of enzymes and are activated by a kinase
zy•mo•gen(ˈzaɪ mə dʒən, -ˌdʒɛn)
any of various enzyme precursor molecules that may change into an enzyme as a result of catalytic change. Also called proenzyme.