- 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...
- 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 xanthop****s;
those with
mainly red/orange
carotenoids are
termed erythrop****s. However,
vesicles containing pteridine and...
-
Dihydrobiopterin (BH2) is a
pteridine compound produced in the
synthesis of L-DOPA, dopamine, serotonin,
norepinephrine and epinephrine. It is restored...
-
distinct chemical moieties linked together. A
pterin (2-amino-4-hydroxy-
pteridine)
heterocyclic ring is
linked by a
methylene bridge to a p-aminobenzoyl...
- PMID 27320965. S2CID 40014874.
Pfleiderer W (February 2008). "
Pteridines. Part CXIX. A New
Pteridine–Purine Transformation".
Helvetica Chimica Acta. 91 (2):...
- erythrop****s (red):
contain reddish pigments such as
carotenoids and
pteridine melanop****s (black/brown):
contain black and
brown pigments such as the...
