Source:http://linkedlifedata.com/resource/umls/id/C0024188
MSH: A class of enzymes that catalyze the cleavage of C-C, C-O, and C-N, and other bonds by other means than by hydrolysis or oxidation. (Enzyme Nomenclature, 1992) EC 4.,CSP: cleave C-C, C-O, C-N, and other bonds by other means than by hydrolysis or oxidation.,NCI: Trivial name applied, together with dehydratase, to certain hydro-lyases (EC class 4.2.1) catalyzing hydration-dehydration. (On-line Medical Dictionary)