- and 4 in ring A, and two
nitrogen atoms at
positions 1 and 3 in ring B.
Pteridines constitute a
large group of
heterocyclic compounds containing a wide variety...
- many bird
species result from the
presence of
other pigments, such as
pteridines, purines, and carotenoids.
Humans and
other animals have many phenotypic...
-
Dihydrobiopterin (BH2) is a
pteridine compound produced in the
synthesis of L-DOPA, dopamine, serotonin,
norepinephrine and epinephrine. It is restored...
-
essential for the
biosynthesis of
purines and one pyrimidine.
Substituted pteridines are
intermediates in the
biosynthesis of
dihydrofolic acid in many microorganisms...
- 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...
- "schemochromes". The
biochromes include true pigments, such as
carotenoids and
pteridines.
These pigments selectively absorb parts of the
visible light spectrum...
- PMID 27320965. S2CID 40014874.
Pfleiderer W (February 2008). "
Pteridines. Part CXIX. A New
Pteridine–Purine Transformation".
Helvetica Chimica Acta. 91 (2):...
-
those with
yellow and
white frills, the
latter two are also
lacking in
pteridines.
Yellow colouration has been
linked to
higher steroid hormones. The frilled...
- hydroxylases, a
class of
monooxygenase that uses
tetrahydrobiopterin (BH4, a
pteridine cofactor) and a non-heme iron for catalysis.
During the reaction, molecular...
-
originating from carotenoids, and the
expression of red/orange
colour from
pteridines. This is
indicative that a
phenomenon such as
multiple alleles or epistasis...
