A pigeon pancreas microsomal system supplemented with microsomal supernatant fluid or pH 5 enzyme incorporates radioactive amino acids into purified amylase. Several parameters of the incorporation system are presented. TrypCc digestion of the isolated radioactive amylase shows that the amino acids are incorporated into peptide linkage within the protein, as in amylase synthesized in viva. The ...

The mammalian glucoside-conjugation pathway was studied by using p-nitrophenol as the model substrate and mouse liver microsomal preparations as the source of enzyme. The microsomal preparations supplemented with UDP-glucose glucosylated p-nitrophenol; p-nitrophenyl glucoside was identified by chromatography in six solvent systems. The unsolubilized glucosyltransferase of fresh microsomal prepa...

The N-oxidation of NN-dimethylaniline was studied by using a reconstituted rabbit liver microsomal enzyme system consisting of highly purified cytochrome P-448, NADPH-cytochrome c reductase and lipid factor. Both cytochrome P-448 and NADPH-cytochrome c reductase were required for optimum N-oxygenating activity; the catalytic capacity of the reductase fraction for supporting N-oxide formation va...

A pigeon pancreas microsomal system supplemented with microsomal supernatant fluid or pH 5 enzyme incorporates radioactive amino acids into purified amylase. Several parameters of the incorporation system are presented. TrypCc digestion of the isolated radioactive amylase shows that the amino acids are incorporated into peptide linkage within the protein, as in amylase synthesized in viva. The ...

Methods were developed for the determination of HMG CoA (3-hydroxy-3-methylglutaryl CoA) reductase activity in subcellular fractions of intestinal mucosa and liver of Wistar strain rats. In the liver, reductase activity was located exclusively in the microsomal fraction. In the intestinal mucosa, activity was found in both mitochondrial and microsomal fractions of crypt cells but not of villi. ...

Dent’s disease (MIM #300009) is a rare X-linked disorder characterized by various degrees of proximal tubular (PT) dysfunction, nephrocalcinosis and nephrolithiasis. The exact prevalence is unknown. The disease was first reported by Dent and Friedman, who described two males with vitamin D resistant rickets, hypercalciuria and low molecular weight proteinuria (LMWP) (Dent & Friedman, 1964). Bas...

BACKGROUND Oculocerebrorenal (Lowe) syndrome is an X-linked multisystem disease characterized by renal proximal tubulopathy, mental retardation, and congenital cataracts. We present a 19-year-old boy who was found to have low molecular weight proteinuria, hypercalciuria, mild generalized hyperaminoaciduria and intermittent microscopic hematuria at the age of 3. METHODS Standard clinical and b...