• 1 January 1976
    • journal article
    • research article
    • Vol. 28  (2) , 138-142
Abstract
Uridine monophosphate kinase (UMPK) was previously reported to be genetically polymorphic in man. The UMPK2 gene product has less activity than that of UMPK1 when measured in normal red cells. The activity of UMPK, like that of many other enzymes, declines during red cell aging, and the lower activity of UMPK 2, as compared with UMPK 1, is best explained by its more rapid catabolism.