نتایج جستجو برای: catalyses
تعداد نتایج: 2159 فیلتر نتایج به سال:
An enzyme that catalyses the three-step methylation of phosphatidylethanolamine to phosphatidylcholine as well as the methylation of fatty acids and that uses S-adenosylmethionine as the methyl donor has been purified about 200-fold from rat liver. Irradiation of the purified enzyme with a short-wavelength u.v. light in the presence of [methyl-3H]8-azido-S-adenosylmethionine followed by electro...
Enzymes from incredibly thermophilic microorganisms have been of innovative interest for quite a while in view their capacity to catalyses responses modern importance at raised temperatures. Most the potential bioprospecting is present identified with investigation extremophiles and likely use cycles. As late microbial enzymes discover applications different businesses comprise significant gath...
Nakamura, S. & Hayashi, S. (1974) FEBSLett. 41,327-330 Pazur, J. H., Knull, H. R. and Simpson, D. L. (1970) Biochem. Biophys. Res. Commun. 40, 110-1 16 Ryle, M., Chaplin, M. F., Gray, C. J. & Kennedy, J. F. (1970) in Gonadotrophins and Ovarian Development (Butt, W. R., Crooke, A. C. & Ryle, M., eds.), pp. 98-106, Livingstone, Edinburgh 1081-1087 Samy, T. S. A. (1967) Arch Biochem. Biophys. 121,...
Mg(2+) is essential for RNA folding and catalysis. However, for the first 1.5 billion years of life on Earth RNA inhabited an anoxic Earth with abundant and benign Fe(2+). We hypothesize that Fe(2+) was an RNA cofactor when iron was abundant, and was substantially replaced by Mg(2+) during a period known as the 'great oxidation', brought on by photosynthesis. Here, we demonstrate that reversing...
Perchloric acid adsorbed on silica gel efficiently catalyses acetylation of structurally diverse phenols, alcohols, thiols, and amines under solvent free conditions.
Oxidized active carbon (oAC) catalyses the formation of polysubstituted quinolines from o-vinyl anilines and aldehydes. The reaction proceeds in a cascade manner through condensation, electrocyclization dehydrogenation, gives access to wide range with alkyl and/or aryl substituents as demonstrated 40 examples. metal-free catalytic procedure allows heterogeneous protocol for synthesis various qu...
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