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Medical Definition of Transmethylation
1. Transfer of a methyl group from one compound to another; e.g., l-homocysteine is converted to l-methionine by the transfer to the latter of a methyl group. See: methionine synthase. (05 Mar 2000)
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1. Transfer of a methyl group from one compound to another; e.g., l-homocysteine is converted to l-methionine by the transfer to the latter of a methyl group. See: methionine synthase. (05 Mar 2000)