Gamma glutamyltransferases (or gamma GT) are liver enzymes which are measured in medical tests.
Structure of gamma glutamyltransferases
The enzymes are composed of two protein sub-units, one light and one heavy, which are derived from the same precursor and separated by being cleaved. The active site of gamma GT is on the light sub-unit.
Function of gamma glutamyltransferases
Alcoholism causes an increase in serum gamma GT activity. © Quinn Dombrowski, Wikimedia, CC
Gamma glutamyltransferases - 1 Photo