Now showing items 71-80 of 174
Properties of yeast pyruvate decarboxylase and their modification by proteolytic enzymes : II. Selective alteration by yeast proteases
(Elsevier, 1968)
Pyruvate decarboxylase has been shown to be more heat labile in extracts of a mutant strain than in extracts of the parent yeast strain. Mutant extracts were found to contain higher levels of proteolytic enzymes than ...
A simple method for estimating dihydroxyacetone (or glyceraldehyde)
(Elsevier, 1962-06)
A simple method for the measurement of changes in dihydroxyacetone in biological samples has been developed. It is based on the reaction between the triose and diphosphopyridine nucleotide in alkaline solution. Glucose ...
IN VIVO steroid biogenesis and metabolism in the human term placenta 1. IN SITU placental perfusion with isotopic pregnenolone
(Elsevier, 1966-07)
Three human term placentas have been perfused with labeled pregnenolone. Perfusions were performed at the time of elective repeat cesarean section, prior to the onset of labor. Placentas and venous effluents were separately ...
Isolation and reactions of a phosphorylated form of phosphoryl transferase from beef heart mitochondria
(Elsevier, 1968-06)
Phosphoryl transferase, a mitochondrial protein which increases the phosphorylative capacity of poorly phosphorylating submitochondrial particles and catalyzes an ATP-ADP exchange reaction, is phosphorylated during oxidation ...
Succinate oxidation by human liver mitochondria
(Elsevier, 1965-09)
Factors controlling the rate of oxidation of succinate were studied in mitochondria isolated from twenty-seven specimens of normal human liver obtained at operation. These were compared with mitochondria prepared from the ...
Testicular steroid sulfatase: Substrate specificity and inhibition
(Elsevier, 1969-12)
Kinetic studies of the cleavage of dehydroepiandrosterone-sulfate (1) and androstenediol-3-sulfate by a particulate enzyme preparation from a rat testicular microsomal fraction gave Km values of 2.04 x 10-6M for DHA-S ...