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Medical Dictionary


noun nu·cle·o·sid·ase \ˌn(y)ü-klē-ə-ˈsī-ˌdās, -ˌdāz\

Medical Definition of nucleosidase

  1. 1:  an enzyme that promotes the hydrolysis of a nucleoside

  2. 2:  a phosphorylase that promotes reversibly the reaction of a nucleoside with phosphate forming a base and a phosphate of ribose or deoxyribose—called also nucleoside phosphorylase

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