Abstract
Erythrocyte galactose-1-phosphate uridyltransferase (Gal-1-PUT) was studied in four species of lemurs. Electrophoretic phenotypes of Lemur fulvusand Lemur macacowere indistinguishable and different from the phenotypes of Lemur cattaand Lemur variegatus,which were different from each other. Enzymatic activity of hemolysates was species specific, with that of Lemur variegatusabout twice that of either Lemur fulvusor Lemur macacoand almost three times that of Lemur catta.Only minor interspecific differences were demonstrated in pH optima and km for galactose-1-phosphate; however, thermal stability varied considerably with phenotype. Antibody inhibition studies indicated that differences in enzyme activity of hemolysates from these species are probably due to differences in enzyme concentration.
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