Influence of lysine on the metabolism of glycosaminoglycans in rats fed cholesterol free diet
Kurup, G.M.; Kurup, P.A.
Indian Journal of Biochemistry and Biophysics 19(4): 262-265
1982
ISSN/ISBN: 0301-1208 PMID: 6819991 Document Number: 193360
Effects of lysine deficiency and of excess lysine on the metabolism of glycosaminoglycans (gg) were studied in rats. The concentration of many gg fractions increased in the aorta and other tissues in lysine deficiency, but were not affected in the lysine-excess group. While the activity of glycosamine phosphate isomerase (glutamine forming) [EC 5.3.1.19] and UDPG [UDP-glucose] dehydrogenase [EC 1.1.1.22] in the liver was increased in lysine deficiency, that of enzymes concerned with degradation of gg showed no uniform pattern of change. None of these enzyme activities was affected in the lysine excess group. Concentration of hepatic PAPS [3'-phosphoadenosine-5'-phosphosulfate], and the activity of the sulfate activating system and sulfotransferase [EC 2.8.2.-] decreased in lysine deficiency, but were not affected in the lysine excess group.