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Related to pteridine: purine, folic acid


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.

[German Pteridin : Pter(in), pigment of insect wings (from Greek pteron, wing; see -pter) + -id, -ide + -in, -ine.]


(Chemistry) chem a yellow, crystalline, heteroaromatic compound having a bicyclic molecular structure; any substituted derivative of this, examples of which occur naturally, esp as vitamins of the B group and insect pigments. Formula: C6H4N4
References in periodicals archive ?
The New Medicine for Trypanosomatid Infections (NMTrypI) consortium uses a highly interdisciplinary approach to optimize pteridine, benzothiazole and miltefosine derivatives, as well as natural products against Trypanosomatids.
These results indicate that abnormal pteridine metabolism contributes to causing endothelial dysfunction and the enhancement of vascular oxidative stress in the insulin-resistant state.
During the study, the researchers identified six pteridine derivatives, compounds that help regulate the metabolism of cells, in the urine samples.
Environmental control of seasonal variation in the butterfly Colias eurytheme: effects of photoperiod and temperature on the pteridine pigmentation.
These compounds have similar chemical structures, consisting of a reduced pteridine moiety coupled through a methylene group to p-aminobenzoic acid (pABA) [4], to which glutamic acid is attached via an amide bond.
Sulfonamides inhibit one of the integral enzymes in folate synthesis, dihydropteroate synthase (DHPS), which catalyzes the condensation of para-aminobenzoic acid and pteridine to form dihydropteroic acid (Figure).
This multimeric enzyme, which functions in the synthesis of pteridine eye pigments as well as BH4 cofactor, exists as multiple isoforms that are expressed in a developmentally and functionally specific manner (O'Donnell et al.
both the melanins and the pteridine compounds that generate the reds and yellows are by-products of metabolic activity that took place when the cells were still alive in the late pupa stage.
It is a book for the libraries of research institutes and universities, primarily of interest to chemists, medicinal chemists, and biochemists engaged in pteridine research.
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).
MTXPG photolytic product (hypothetically a pteridine carboxylic acid) was measured at an excitation wavelength set at 274 nm and an emission wavelength set at 470 nm.