( 1989 ) Pyrimidine, purine and nitrogen control of cytosine deaminase synthesis in Escherichia coli K12. Involvement of the glnLG and purR genes in the regulation of codA expression . Arch. Microbiol. 152 , 115 – 118 . DOI: 10.1007/BF00456087...
a. The region in a transistor between the emitter and the collector. b. The electrode attached to this region. 18. One of the nitrogen-containing purines (adenine and guanine) or pyrimidines (cytosine, thymine, and uracil) that occurs attached to the sugar component of DNA or RNA. adj....
Nucleoside analogues of uridine, 5-bromo-, 5-iodo-, and 5-fluorouridines, thymidine and cytidine were prepared by condensing appropriately substituted 2,4-dimethoxypyrimidines with an acyclic side chain in the form of a benzoylated halo-ether, and subsequent removal of the protecting benzoyl ...
In genomes, nucleotide bases are of two types: purines (adenine and guanine) and pyrimidines (cytosine and thymine). Similarly, the nucleotide variations are of two types: transition and transversion. In transition, a purine base changes to another purine nucleotide and a pyrimidine nucleotide ...
N4-ethenocytosine (etC), N, 1,N6-ethenoadenine (etA), and 8-oxo-deoxyguanosine (8oxoG). Significance of differences for different type of diet was noted at * p < 0.05. Serum uric acid concentrations were higher in both groups of pigs fed the unbalanced diet (UDG and RG) as ...
Numbers in parenthesis represents the range for the vertical-axis in the sample chromatograms. Full size image Alkylated homologs of uracil, as well as those of other N-heterocyclic molecules such as pyrimidine and nicotinic acid with the number of carbon atoms up to 30 were detected in the ...
In some analyses, two flanking bases 5′ and 3′ to the mutated base were considered (producing 1,536 classes) or mutations within transcribed genome regions were selected and classified according to whether the mutated pyrimidine fell on the transcribed or untranscribed strand (producing 192 ...
This pyrimidine can still constitute a base pair with guanine [1]. In healthy somatic cells, up to 90% of CpG dinucleotides, i.e. 3% to 6% of all cytosines, are methylated, except for promoter CpG islands, which appear to be protected from methylation [7, 11]. So far, three active...
We tested this idea, coined “targeting resistance,” with inhibitors of pyrimidine biosynthesis. Pyrimidines, thiamine (vitamin B1) and the nucleobases thymine, cytosine, and uracil, are ubiquitous and essential in cells. There are two ways to obtain pyrimidines: salvage and de novo synthesis. ...
VIII. The conformation of pyrimidine nucleosides in solution The optical rotatory dispersion data for an extended series of substituted uracil, thymine, and cytosine nucleosides are reported. The compounds studied include anomeric pairs, cyclouridines, azapyrimidine nucleosides, pseudouridine, and... TR...