
Transmethylation is a biologically important organic chemical reaction in which a methyl group is transferred from one compound to another. An example of transmethylation is the recovery of methionine from homocysteine. In order to sustain sufficient reaction rates during metabolic stress, this reaction requires adequate levels of vitamin B12 and ...
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http://en.wikipedia.org/wiki/Transmethylation

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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http://www.encyclo.co.uk/local/20973

(trans″mәth-ә-la´shәn) the transfer of a methyl group (CH3dbond) from the molecules of one compound to those of another.
Found on
http://www.encyclo.co.uk/local/21001

Type: Term Pronunciation: trans′meth-i-lā′shŭn Definitions: 1. Transfer of a methyl group from one compound to another; l-homocysteine is converted to l-methionine by the transfer to the latter of a methyl group. See: methionine synthase
Found on
http://www.medilexicon.com/medicaldictionary.php?t=93315
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