Now showing items 31-40 of 479
Enzyme stereoselectivity: The reversible reaction catalyzed by 2-keto-4-hydroxyglutarate aldolase of Escherichia coli
(Elsevier, 1975-08-04)
SummaryThe condensation of [3-3H3]-pyruvate with glyoxylate in 3HOH to form [3-3H2]-ketohydroxyglutarate was catalyzed by ketohydroxyglutarate aldolase of Escherichia coli to study the stereochemical behavior of the enzyme. ...
The use of fluorescein-conjugated Bandeiraea simplicifolia B4-isolectin as a histochemical reagent for the detection of [alpha]--galactopyranosyl groups , : Their occurrence in basement membranes
(Elsevier, 1979-05)
The Bandeiraea simplicifolia B4-isolectin, which combines specifically with [alpha]--galactopyranosyl groups, has been conjugated with fluorescein isothiocyanate and demonstrated to be a reliable histochemical probe for ...
Structural studies of capsular polysaccharide of type XII diplococcus pneumoniae
(Elsevier, 1974-10)
The capsular polysaccharide of Diplococcus pneumoniae Type XII contains residues of -glucose and -galactose in a molar ratio of 2:1. The methylated polysaccharide yielded upon hydrolysis 2,3,4,6-tetra- and 3,4,6-tri-O-me ...
Structure of a water-insoluble -glucan isolated from a streptococcal organism
(Elsevier, 1983-08-16)
The structure of the extracellular polysaccharide (water-insoluble -glucan) from an anaerobic, Gram-positive coccus organism (Streptococcus) has been investigated. Acid hydrolysis of the methylated glucan yielded 2,3,4,6-tetra-, ...
Inhibition of polyphosphoinositide phosphodiesterase by aminoglycoside antibiotics
(Kluwer Academic Publishers-Plenum Publishers; Plenum Publishing Corporation ; Springer Science+Business Media, 1985-08)
The calcium-activated phosphodiesteratic hydrolysis of 32 P-labeled phosphatidylinositol 4,5-bisphosphate and phosphatidylinositol 4-phosphate in prelabeled nerve ending membranes is inhibited by the aminoglycosides neomycin ...
Role of isosafrole as complexing agent and inducer of P-450LM4 in rabbit liver microsomes
(Elsevier, 1982-09-16)
Isosafrole serves as an excellent inducing agent in rabbits for P-450LM4, the same isozyme as that which is induced by 3-methylcholanthrene and 5,6-benzoflavone. Since the isosafrole adduct formed with isozyme 4 is unstable, ...
Structure-function analysis in nuclear RNase P RNA
(Kluwer Academic Publishers; Springer Science+Business Media, 1995-06)
Eukaryotic ribonuclease P (RNase P) enzymes require both RNA and protein subunits for activity in vivo and in vitro . We have undertaken an analysis of the complex RNA subunit of the nuclear holoenzyme in an effort to ...
Role for calcium from the sarcoplasmic reticulum in coupling muscle activity to nicotinic acetylcholine receptor gene expression in rat
(John Wiley & Sons, Inc., 1998-06-05)
Neurally evoked muscle electrical activity suppresses nicotinic acetylcholine receptor (nAChR) gene expression in extrajunctional domains of adult muscle fibers. It has been proposed that this regulation is mediated by ...
Michael addition of thiols with 4-methyleneglutamic acid: Preparation of adducts, their properties and presence in peanuts
(Elsevier, 1982-04-29)
The thioethers, S-(4-amino-2,4-dicarboxybutyl)cysteamine, S-(4-amino-2,4-dicarboxybutyl)cysteine and S-(4-amino-2,4-dicarboxybutyl)glutathione, were synthesized by a Michael addition between 4-methyleneglutamic acid and ...
Isolation of an acid protease from rabbit reticulocytes and evidence for its role in processing redox proteins during erythroid maturation
(Elsevier, 1981-06-30)
A protease which generates a soluble hemepeptide from bovine liver microsomal cytochrome has been isolated from the membrane fraction of rabbit reticulocytes. Inhibition by pepstatin and an acidic pH optimum indicate that ...