Now showing items 31-40 of 125
Biosynthesis, primary structure and molecular cloning of snowdrop ( Galanthus nivalis L.) lectin
(Blackwell Publishing Ltd, 1991-11)
The selectivity of hydrazine oxidation on a polycrystalline rhodium surface
(Elsevier, 1991-11-02)
The surface reactions of coadsorbed hydrazine and atomic oxygen have been examined by means of temperature-programmed reaction spectroscopy (TPRS) on a clean polycrystalline rhodium surface over the 90 to 1450 K temperature ...
Determination of the mutations responsible for the lesch-nyhan syndrome in 17 subjects
(Elsevier, 1991-06)
Hypoxanthine -- guanine phosphoribosyltransferase (HPRT) is a purine salvage enzyme that catalyzes the conversion of hypoxanthine to inosine monophosphate and guanine to guanosine monophosphate. Previous studies of mutant ...
Determining the extent of labeling for tetramethylrhodamine protein conjugates
(Elsevier, 1991-10-25)
A new, relatively simple, spectrophotometric technique has been developed which is useful for accurately determining the extent of chromophore labeling of proteins. Often the absorbance spectra and extinction coefficients ...
Monte Carlo simulation of the adsorption of co on pt(111): thermodynamic considerations for the surface configuration of adsorbed species
(Elsevier, 1991-02-02)
We have developed a "two-site" lattice gas model which provides a theoretical framework for understanding adsorption equilibrium in systems for which the potential energy surface is inherently heterogeneous in terms of ...
Isolation, characterization, and chromosomal mapping of mouse P450 17[alpha]-hydroxylase/C17-20 lyase
(Elsevier, 1991-05)
Cytochrome P450 17[alpha]-hydroxylase/C17-20 lyase (P45017[alpha]) catalyzes the conversion of C-21 steroids to C-19 steroids in gonads. A full-length mouse cDNA encoding P45017[alpha] was isolated from a mouse Leydig cell ...
1-Monoglyceride production from lipase-catalyzed esterification of glycerol and fatty acid in reverse micelles
(Wiley Subscription Services, Inc., A Wiley Company, 1991-08-20)
Glycerol-fatty acid esterification has been conducted with lipase from R. delemar in water/AOT/isooctane reverse micellar media, with the major product being 1-monoglyceride, a useful food-emulsifier. 1,3-diglyceride was ...
Comparison of the isolation of adducts fo 2'-deoxycytidine and 2'-deoxyguanosine with phenylglycidyl ether by high-performance liquid chromatography on a reversed-phase column and a polystyrene-divinylbenzene column
(Elsevier, 1991)
2'-Deoxycitidine (dCyd) and 2'-deoxyguanosine (dGuo) were subjected to reaction with phenylglycidyl ether (PGE) in methanol in order to study the formation of the corresponding 2'-deoxynucleoside adducts. Separation methods ...
Discriminative and reinforcing effects of brotizolam in rhesus monkeys
(Springer-Verlag, 1991-02)
The reinforcing and discriminative stimulus effects of brotizolam, a benzodiazepine-hypnotic, were evaluated in rhesus monkeys. In one experiment, separate groups of monkeys ( N =3/group) were trained to discriminate ...