pteridine

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pter·i·dine

(ter'i-dēn),
Azinepurine; benzotetrazine; pyrazino[2,3-d]pyrimidine; a two-ring heterocyclic compound found as a component of pteroic acid and the pteroylglutamic acids (folic acids, pteropterin, etc.); simple pteridine derivatives (for example, xanthopterin, leucopterin) occur as pigments in butterfly wings, whence the name.

pteridine

(tĕr′ĭ-dēn′)
n.
1. A yellow crystalline compound, C6H4N2, having two fused six-member aromatic rings each containing two nitrogen atoms and four carbon atoms. One of the rings is a pyrimidine; the other is a pyrazine.
2. Any of a group of organic compounds derived from this compound, including folic acid and the pigments of butterfly wings.
References in periodicals archive ?
He said that the oncopterin level in urine indicates whether cancer is likely to develop, and varying levels of the six pteridines can actually provide a "fingerprint" of the type of cancer.
During the study, the researchers identified six pteridine derivatives, compounds that help regulate the metabolism of cells, in the urine samples.
The subject matter is organized in terms of syntheses and reactions of pteridines.
Neopterin belongs to the class of pteridines that are pyrazino-[2,3-d]-pyrimidine compounds occurring ubiquitously in living cells.
Effects of pteridines on luminol-dependent chemiluminescence induced by chloramine-T.
Neopterin, a pteridine derivative produced by activated macrophages in response to stimulation by interferon-[gamma], is a marker of both immune activation and coronary artery disease (CAD) activity (2).
Pteridine derivatives (6,7-dimethyltetrahydropterin and sepiapterin) were from Schircks Laboratories.
The phenylalanine concentrations, urinary pteridine values, and PTPS enzyme activities in red blood cells (16) are summarized in Table 1.