Now showing items 31-40 of 79
Chromatographic resolution of a racemic substance on a microporous resin
(Elsevier, 1968)
A microporous polymer of ethylvinylbenzene and divinylbenzene was chloromethylated and then aminated with (--)-[alpha]-phenethylamine to produce an optically active weak-base ion-exchange resin. Partial resolutions of ...
Enrichment of proteins with amino acid residues, employing p, p'-difluoro-m, m'-dinitrodiphenyl sulfone,
(Elsevier, 1965-04)
The bifunctional reagent, p, p'-difluoro-m,m'-dinitrodiphenyl sulfone, was employed to conjugate a variety of amino acids to the protein, gelatin. Among the amino acids tried, tyrosine conjugated most readily. The tyrosyl ...
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 ...