pyrimidine base

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Related to pyrimidine base: purine base

py·rim·i·dine base

a pyrimidine.
References in periodicals archive ?
The concentrations of cytosine, total nucleic acid bases and pyrimidine bases were significantly affected by the interaction of lactation stages and time of sampling.
Oxidative stress is defined as "An imbalance between oxidants and anti-oxidants in favor of the oxidants, leading to a disruption of redox signaling and control and/or molecular damage." ROS cause cellular dysfunction by lipid peroxidation, oxidation of protein backbone and side chain, breakage of DNA strands and modification of purine and pyrimidine bases. Cells in the brain are highly susceptible to the adverse effects of oxidative stress because of various reasons like abundant peroxidizable substrates being generated in the brain, high metabolic rate of the brain and modest (scanty) AOX levels in the brain.
of guanine (8-hydrox-2'-deoxy guanine), single-stranded breaks, and oxidized pyrimidine bases (20,21).
Results of quantitaion of Purine and Pyrimidine bases using Ethyl Chloroformate as Derivatizing Reagent.
It is more difficult to assess the quality of the DNA that will be obtained, that is, its average length or the chemical modification of purine or pyrimidine bases, which can affect the performance of downstream molecular assays.
They can occur spontaneously due to the chemical instability of purine and pyrimidine bases, or they can be induced by exposure to reactive chemicals and ionizing radiation.
The pyrimidine bases are the part of the nucleic acids, and therefore, both natural pyrimidines and pyrimidine derivatives have diverse effects on the body.
Electronic excitation of DNA nucleobases induced by solar ultraviolet light has been extensively studied since the 1960s because it can lead to the formation of harmful photoproducts such as cyclobutane pyrimidine dimers (CPDs) between adjacent pyrimidine bases within the same DNA strand [13].
Nr(alpha-furanidyl) derivatives of natural pyrimidine bases and their antimetabolities," Doklady Akademii nauk SSSR, vol.
DPD is the initial enzyme in the metabolic pathway responsible for the catabolism of the pyrimidine bases uracil and thymidine [6].