Now showing items 21-30 of 67
Adapting Homogeneous Enzyme-Linked Competitive Binding Assays to Microtiter Plates
(Elsevier, 1994-04)
Recently devised homogeneous enzyme-linked binding assays useful for the rapid detection of carbohydrate structure/content of intact glycoproteins (via use of lectins as binders) and for quantitating given vitamins (e.g., ...
Certain 8-amino-9-(benzyl)guanines as potential purine nucleoside phosphorylase inhibitors
(Elsevier, 1994)
Several 8-amino-9-(benzyl)guanines were selected for synthesis as potential purine nucleoside phosphorylase (PNP) inhibitors on the basis of the Topliss decision tree. These compounds were prepared by the treatment of ...
Steroid Metabolism by Rabbit Olfactory-Specific P450 2G1
(Elsevier, 1994-12)
Cytochrome P450 2G1 (2G1), which is uniquely expressed in the olfactory mucosa in mammals, may have important physiological functions. In the present study, we have examined the catalytic activity of rabbit 2G1 toward a ...
The reaction of sulfur with dilithio compounds. The syntheses and structures of phenanthro [1, 10-cd]-1,2-dithiole and phenanthro[4,5-cde] [1,2]dithiin
(VCH Publishers, Inc.Wiley Periodiocals, Inc., 1994-04)
The sequential reaction of selected polycyclic aromatic hydrocarbons with butyllithium/TMEDA/hexane and sulfur allows preparation of ring-fused dithiins, dithioles, and thiophenes. In this manner, phenanthrene has been ...
Glycine-extended post-translational processing intermediates of gastrin and cholecystokinin in the gut
(Elsevier, 1994-02-03)
Cholecystokinin (CCK) and gastrin are two polypeptide hormones of the gut that share complete structural homology in their carboxyl-terminal pentapeptide. Both peptides are biologically activated from their glycine-extended ...
The structure and function of supported molybdenum nitride hydrodenitrogenation catalysts
(Elsevier, 1994-03)
A series of [gamma]-Al2O3 supported Mo nitrides were prepared by the temperature programmed reaction of supported molybdates with NH3. Several loadings, heating rates, and space velocities were employed in an attempt to ...
tRNA-guanine transglycosylase from Escherichia coli: Recognition of dimeric, unmodified tRNATyr
(Elsevier, 1994)
In order to probe the interaction between tRNA and the tRNA hypermodifying enzyme, tRNA-guanine transglycosylase (TGT) from Escherichia coli, we have undertaken the generation of E coli tRNATyr and analogues. During efforts ...
Direct chemical analysis of UV laser ablation products of organic polymers by using selective ion monitoring mode in gas chromatography/mass spectrometry
(Elsevier, 1994-02)
Trace quantitites of laser ablated organic polymers were analyzed by using commercial capillary column gas chromatography / mass spectrometry; the instrument was modified so that the laser ablation products could be ...