Cell-free extracts from Escherichia coli cleave the thioether linkage of S-ribosylhomocysteine and generate free homocysteine. Homocysteine was quantitatively recovered from reaction mixtures by ion exchange chromatography on Amberlite CG-120 resin. Free ribose was not a product of this cleavage; however, a compound initially derived from the ribose moiety of S-ribosylhomocysteine has been isol...

Cell-free extracts from Escherichia coli cleave the thioether linkage of S-ribosylhomocysteine and generate free homocysteine. Homocysteine was quantitatively recovered from reaction mixtures by ion exchange chromatography on Amberlite CG-120 resin. Free ribose was not a product of this cleavage; however, a compound initially derived from the ribose moiety of S-ribosylhomocysteine has been isol...

al.(12), I did not find the technique 12. Merlini J, Piro P, Pavesi F, et al. weakly basic resin Amberlite IRA-68 susceptible to technical artefacts. Detection and identification of monoclo(Rohm and Haas), which has a polyImmunofixation on cellulose acenal components: Immunoelectrophoreacrylic matrix, has practically no affintate deserves wider use for identifisis on agarose gel and immunofixat...

INTRODUCTION Samarium-153 (153Sm) styrene divinylbenzene microparticles were developed as a surrogate for Yttrium-90 (90Y) microspheres in liver radioembolization therapy. Unlike the pure beta emitter 90Y, 153Sm possess both therapeutic beta and diagnostic gamma radiations, making it possible for post-procedure imaging following therapy. METHODS The microparticles were prepared using commerci...

for the first time this study reported the success of using nanocrystalline hexagonal close-packed (hcp) nickel (ni) modified composite graphite (cg) electrode (hcp-nano ni/cg) for the electrocatalytic oxidation of glycerol in alkaline medium (0.1 m koh). the hcp-nano ni/cg electrode had an improve response and specificity on the electrocatalytic oxidation of glycerol over the bare cg. the elec...

The removal of methyl orange dye, MO, has been accomplished through the use liquid-liquid extraction from aqueous solutions using Amberlite LA-2 as an extractant. UV-Vis spectroscopy was used to determine concentration dye in solution. effect pH studied at a specific and contact time. initial (20-80 ppm), (0.011-0.044 M) on rates different times (15- 60 min), temperatures 20-40 OC have investig...

Introduction PW-Amberlite is a promising catalyst for limonene epoxidation with aqueous hydrogen peroxide and acetonitrile as solvent; limonene conversion and limonene epoxide selectivity higher than 80 % and 90 %, respectively, have been reported [1,2]. The mechanistic pathway proposed for limonene epoxidation on PW-Amberlite [3], includes the interaction of H2O2 with peroxophosphotungstate sp...

In the present work, the effect of bed expansion on BSA adsorption on Amberlite IRA 410 ion-exchange resin was studied. The hydrodynamic behavior of an expanded bed adsorption column on effects of the biomolecules and salt addition and temperature were studied to optimize the conditions for BSA recovery on ion-exchange resin. Residence time distribution showed that HEPT, axial dispersion and th...