Source:http://linkedlifedata.com/resource/umls/id/C0206235
MSH: A group of enzymes that catalyze the hydrolysis of diphosphate bonds in compounds such as nucleoside di- and tri-phosphates, and sulfonyl-containing anhydrides such as adenylylsulfate. (Enzyme Nomenclature, 1992) EC 3.6.,CSP: heading term for the high energy phosphatases.