Results 211 to 220 of about 47,328 (256)

Presence of cytidine 5′-tetraphosphate in commercial samples of cytidine 5′-triphosphate

Analytical Biochemistry, 1983
A contaminant compound has been isolated from commercial samples of CTP by ion-exchange chromatography on a Dowex-1 column. It has been characterized as cytidine 5'-tetraphosphate from its ultraviolet spectrum, labile and total phosphate content, and periodate consumption.
M J, Costas, J C, Cameselle, M A, Günther Sillero, A, Sillero   +3 more
openaire   +2 more sources

The effect of pH on the adsorption and the association of cytidine, cytidine-5′-monophosphate and cytidine-5′-diphosphate at the charged interface

Bioelectrochemistry and Bioenergetics, 1986
Abstract The effect of pH on the adsorption and association of cytidine, cytidine-5′-monophosphate and cytidine-5′-diphosphate was studied by phase-sensitive a.c. polarography. At pH ≤ 5.2 and at lower concentrations of N(3)-protonated cytidine or cytidine phosphate, a single-step Frumkin isotherm was obtained, whereas at elevated bulk concentration ...
M.M. Kamal, Y.M. Temerk, A.U. Ahmed, Z.A. Ahmed   +3 more
openaire   +1 more source

Fluorescent adenosine and cytidine derivatives

Biochemical and Biophysical Research Communications, 1972
Summary The reaction of chloroacetaldehyde with adenosine and cytidine produces a fluorescent product in each case. These products are easily distinguishable spectroscopically by their fluorescence emission maxima. Since the reaction is carried out in aqueous media under mild conditions of pH and temperature, it should prove extremely useful in ...
J R, Barrio, J A, Secrist, N J, Leonard
openaire   +2 more sources

Some dihydro-cytidines and -isocytidines

J. Chem. Soc., Perkin Trans. 1, 1974
Syntheses of 5,6-dihydrocytidine (IV), 5,6-dihydroisocytidine (V), and the 2-thioanalogue (VII) of the former are described. U.v. spectroscopic data for (V) and its 2-N-methyl and 2,2-di-N-methyl derivatives (IX) and (X) in alcoholic solution reveal amino rather than imino tautomeric states. The n.m.r.
V, Skarić, B, Gaspert, M, Hohnjec, G, Laćan   +3 more
openaire   +2 more sources

Prebiotic Formation of Cytidine Nucleotides

Nature, 1971
IN contrast to the plausible explanations for proteinoid formation1, there seems to be no satisfactory concept for the genesis of polynucleotide templates in the presumed conditions of the primitive Earth. Only parts of the problem, such as the origin of the bases2,3 and carbohydrates4 and the synthesis of short oligonucleotides5,6, have been subjected
C M, Tapiero, J, Nagyvary
openaire   +2 more sources

Cytidine Deaminase in Human Lymphocytes

Nature New Biology, 1973
PERIPHERAL blood lymphocytes in culture undergo cell division in the presence of the mitogenic stimulant phyto-haemagglutinin (PHA)1. Some of the metabolic processes that occur shortly after stimulation include phosphorylation of membrane bound phosphatidyl inositol2, acetylation of histones3, changes in cyclic GMP levels4, a pronounced elevation of ...
C W, Abell, N W, Marchand
openaire   +2 more sources

Interactions between cytidine and its cation in polycytidylic acid, cytidylyl-3'-cytidine, and cytidine aggregates

Biochemistry, 1970
T, Montenay-Garestier, C, Hélène
openaire   +2 more sources

Cytidine diphosphate ribitol

Biochimica et Biophysica Acta, 1956
J, BADDILEY, J G, BUCHANAN, B, CARSS, A P, MATHIAS   +3 more
openaire   +2 more sources

Multistep construction of metabolically engineered Escherichia coli for enhanced cytidine biosynthesis

Biochemical Engineering Journal, 2020
Zhimin Li
exaly  

Halogenated derivatives of cytidine: Structural analysis and binding affinity

Journal of Theoretical and Computational Chemistry, 2020
Mahmoud Mirzaei, Marjaneh Samadizadeh
exaly