Results 211 to 220 of about 42,575 (244)

Abnormal Erythrocyte Pyrimidine Nucleotides in Uremic Subjects

Nephron, 1985
Uremia causes major increases in the erythrocyte (RBC) purine nucleotides, presumably secondary to phosphate retention, but no previous study has been made of the pyrimidine nucleotides, normally absent from RBC. This investigation was prompted by demonstration of the abnormal presence of RBC pyrimidine nucleotides, primarily cytidine triphosphate (CTP)
C R, Angle, M S, Swanson, S J, Stohs, R S, Markin   +3 more
openaire   +2 more sources

Control of pyrimidine nucleotide formation in Pseudomonas aurantiaca

Archives of Microbiology, 2020
The control of pyrimidine nucleotide formation in the bacterium Pseudomonas aurantiaca ATCC 33663 by pyrimidines was studied. The activities of the pyrimidine biosynthetic pathway enzymes were investigated in P. aurantiaca ATCC 33663 cells and from cells of an auxotroph lacking orotate phosphoribosyltransferase activity under selected culture ...
Anvesh Domakonda, Thomas P. West
openaire   +2 more sources

De Novo Pyrimidine Nucleotide Synthesis

2014
The pathway of biosynthesis of pyrimidine nucleotides de novo from central metabolic intermediates is the same in all prokaryotic and eukaryotic organisms in which it has been examined, but as will be seen, the functional organization of the enzymes of the pathway and the means adopted for regulation of pyrimidine biosynthesis vary greatly from species
Robert L. Switzer, Cheryl L. Quinn
openaire   +1 more source

Pyridine Nucleotide Metabolism: Purine and Pyrimidine Interconnections

1991
The role of the pyridine coenzymes NAD and NADP in oxidation-reduction reactions, leading to energy production and to reductive synthesis, is well documented, and the characteristics of the proteins involved have been extensively studied. Since the balance between the oxidised and reduced form of pyridine coenzymes modulates both catabolic and ...
V, Micheli, C, Ricci, S, Sestini, M, Rocchigiani, M, Pescaglini, G, Pompucci   +5 more
openaire   +2 more sources

Purine and pyrimidine nucleotide metabolism in higher plants

Journal of Plant Physiology, 2003
Purine and pyrimidine nucleotides participate in many biochemical processes in plants. They are building blocks for nucleic acid synthesis, an energy source, precursors for the synthesis of primary products, such as sucrose, polysaccharides, phospholipids, as well as secondary products.
Claudio, Stasolla, Riko, Katahira, Trevor A, Thorpe, Hiroshi, Ashihara   +3 more
openaire   +2 more sources

Basis of Pyrimidine Nucleotide Metabolism in the Myocardium

Cardiovascular Drugs and Therapy, 1998
The metabolism of pyrimidine nucleotides in the myocardium is poorly understood. The turnover of these nucleotides is high, whereas their concentration is rather low. The de novo pathway of synthesis does not seem very efficient, although the utilization of nucleosides could represent the major pathway for pyrimidine nucleotide synthesis. In rat blood,
A, Rossi, J, Olivares
openaire   +2 more sources

Purine, Pyrimidine, and Pyridine Nucleotide Metabolism

2014
A fairly complete description of the genes involved in the de novo synthesis of purine and pyrimidine nucleotides and of the pyridine nucleotide coenzymes in Bacillus subtilis is now available. Of the enzymes for de novo synthesis of inosine monophosphate (IMP), most are similar in B.
Robert L. Switzer, Howard Zalkin, Hans Henrik Saxild   +2 more
openaire   +1 more source

Nucleotide, Nucleoside, Purine, Pyrimidine, Pteridine

1952
Die Organe erwachsener Tiere enthalten zumeist mehr Ribonucleotide als Desoxyribonucleotide (Tabelle 159). Der Quotient RN : DRN ist in fetalen Geweben kleiner als in erwachsenen. J. Geschwind und C. H. Li fanden ihn in der fetalen Rattenleber zu 0,9, in der Leber neugeborener Ratten zu 1,9 und in der Leber 40 Tage alter Ratten zu 2,8.
openaire   +1 more source

Pyrimidine nucleotide synthesis inPseudomonascitronellolis

Canadian Journal of Microbiology, 2004
Pyrimidine biosynthesis was active in Pseudomonas citronellolis ATCC 13674 and appeared to be regulated by pyrimidines. When wild-type cells were grown on succinate in the presence of uracil, the de novo enzyme activities were depressed while only four enzyme activities were depressed in the glucose-grown cells.
openaire   +2 more sources

Pyrimidine Nucleotide Biosynthesis and Regulation in Pseudomonas lemonnieri

Current Microbiology
The pyrimidine biosynthetic pathway regulation in the bacterium Pseudomonas lemonnieri ATCC 12983 was investigated since this strain synthesizes a blue aromatic pigment that could have a commercial application as a dye. The effect of the pyrimidine bases, orotic acid and uracil metabolites, on the enzymes unique to the pyrimidine biosynthetic pathway ...
Swapna, Bodampati, Thomas P, West
openaire   +2 more sources