pyrimidine

Bacteria, they thought, would have no need to make their own pyrimidines.

Very little was known about the origin of the pyrimidines and purines.

Pyrimidine is also found in meteorites, but scientists still do not know its origin.

However, later he corrected himself and expanded his initial studies, showing that the end products actually were pyrimidines.

It is the initial and rate-limiting step in pyrimidine catabolism.

The researchers mainly studied two of the acids, purine and pyrimidine.

A partial list of trivial names of various pyrimidines exists.

Synthesis of pyrimidine nucleotides is a much simpler process.

Thymine is also known as 5-methyluracil, a pyrimidine nucleobase.

The chemical compound 5-methyluridine, also called ribothymidine, is a pyrimidine nucleoside.

Pyrazine is less basic in nature than pyridine, pyridazine and pyrimidine.

Other six-membered ring analogs are for example pyrimidines and pyrazines.

First, the concentration of the pyrimidines (thymine and adenine) are always found in the same amount as one another.

In other hands (see Chapter 10), investigations based on the pyrimidines led to the antimalarial drug chloroguanide.

Nucleotides contain either a purine or a pyrimidine base.

De novo synthesis of pyrimidines and purines follows two different pathways.

Transversions: replacement of a purine with a pyrimidine or vice versa.

Uridine triphosphate, which is a pyrimidine nucleotide, has the ability to act as an energy source.

The compounds can also be called 2-hydroxypyrimidine or 4-hydroxypyrimidine respectively, based on a substituted pyrimidine, or 1,3-diazine, ring.

It has been found to be an enhancer of the rudimentary gene, involved in pyrimidine biosynthesis.

The nitrogenous bases are classified into two parent compounds, purine and pyrimidine.

It lacks the cellular machinery for making many essential compounds, including new purines and pyrimidines.

Uracil is a common and naturally occurring pyrimidine derivative.

Pyrimidine is an aromatic heterocyclic organic compound similar to pyridine.

Like pyridines, in pyrimidines the π-electron density is decreased to an even greater extent.