A pteridine is a bicyclic heterocyclic system with two nitrogen atoms at positions 1 and 4 in ring A, and two nitrogen atoms at positions 1 and 3 in ring...

Dihydrobiopterin (BH2) is a pteridine compound produced in the synthesis of L-DOPA, dopamine, serotonin, norepinephrine and epinephrine. It is restored...

In enzymology, a pteridine oxidase (EC 1.17.3.1) is an enzyme that catalyzes the chemical reaction 2-amino-4-hydroxypteridine + O2 ⇌ {\displaystyle \rightleftharpoons...

In enzymology, a pteridine reductase (EC 1.5.1.33) is an enzyme that catalyzes the chemical reaction 5,6,7,8-tetrahydrobiopterin + 2 NADP+ ⇌ {\displaystyle...

Pterin is a heterocyclic compound composed of a pteridine ring system, with a "keto group" (a lactam) and an amino group on positions 4 and 2 respectively...

many bird species result from the presence of other pigments, such as pteridines, purines, and carotenoids. Humans and other animals have many phenotypic...

pteridine pigments are named xanthophores; those with mainly red/orange carotenoids are termed erythrophores. However, vesicles containing pteridine and...

PMID 27320965. S2CID 40014874. Pfleiderer W (February 2008). "Pteridines. Part CXIX. A New Pteridine–Purine Transformation". Helvetica Chimica Acta. 91 (2):...

distinct chemical moieties linked together. A pterin (2-amino-4-hydroxy-pteridine) heterocyclic ring is linked by a methylene bridge to a p-aminobenzoyl...

erythrophores (red): contain reddish pigments such as carotenoids and pteridine melanophores (black/brown): contain black and brown pigments such as the...

IUPAC name 7,8-Dimethyl-10-[(2S,3S,4R)-2,3,4,5-tetrahydroxypentyl]benzo[g]pteridine-2,4-dione CAS Number 83-88-5  Y PubChem CID 493570 IUPHAR/BPS 6578 DrugBank...

peer-reviewed journal articles and co-edited a book volume on subjects including pteridine pigment biosynthesis, thermal biology, population structure, butterfly...

is used to attach various flavin groups It has a similar structure to pteridines which has two interconnected rings. Isoalloxazine was first obtained in...

8-Dihydropterin pyrophosphate, dihydropterin-CH2OH-diphosphate) is a pteridine; a precursor to dihydrofolic acid. Derrick, J. P (2008). The structure...

proteins, NADH dehydrogenase, E.coli nitroreductase and old yellow enzyme. Pteridine Pterin Deazaflavin (5-deazaflavin) Michaelis L, Schubert MP, Smythe CV...

hydroxylases, a class of monooxygenase that uses tetrahydrobiopterin (BH4, a pteridine cofactor) and a non-heme iron for catalysis. During the reaction, molecular...

Chemically, its structure is that of a (dihydropteridine reductase) reduced pteridine derivative (quinonoid dihydrobiopterin).[citation needed] Tetrahydrobiopterin...

2-amino-6-[(2S)-2-hydroxypropanoyl]-7,8-dihydro-1H-pteridin-4-one, is a member of the pteridine class of organic chemicals. Sepiapterin can be metabolized into tetrahydrobiopterin...

tissues to fluoresce bright green Fluorescence is attributed to metabolite pteridine, which is produced by the fungus in actively growing hairs. Infected hairs...

Triamterene (traded under names such as Dyrenium and Dytac) is a potassium-sparing diuretic often used in combination with thiazide diuretics for the treatment...

(eds.). Chemistry and Biology of Pteridines and Folates Proceedings of the 12th International Symposium on Pteridines and Folates, National Institutes...

The brown eye mutation results from inability to produce or synthesize pteridine (red) pigments, due to a point mutation on chromosome II. m: miniature-...

convert it into folic acid. It is the end product of a non-conjugated pteridine compound and inhibits the growth of lymphocytes produced by concanavalin...

compound belonging to the pteridine class of heterocyclic compounds. Neopterin belongs to the chemical group known as pteridines. It is synthesised by human...

C6H4N4 (molar mass: 132.12 g/mol, exact mass: 132.0436 u) may refer to: Pteridine Tricyanoaminopropene (TRIAP) This set index page lists chemical structure...

oxygen. The oxygen incorporated need not be derived from O2 with reduced pteridine as one donor, and incorporation of one ato of oxygen into the other donor...

serving as a negative regulator of rate-limiting enzymes in dopamine and pteridine synthesis pathways, both of which are required to occur for production...

erythrophores, which contains reddish pigments such as carotenoids and pteridines. The second type is the melanophores, which contains black and brown pigments...

oxygen. The oxygen incorporated need not be derived from O2 with reduced pteridine as one donor, and incorporation of one ato of oxygen into the other donor...

add to the display. Colouration is mainly created by carotenoids and pteridine pigments; lizards with red and orange frills have more carotenoids than...