pterin


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pterin

(ˈtɛrɪn)
n
(Chemistry) any of a group of substances which occur naturally as insect pigments
References in periodicals archive ?
The domain architecture consisting of Pterin domain from 230-498 residues and HPPK domain from 47-172 amino acid residues was evaluated using the Chimera program for seabuckthorn protein.
Structure of nitric oxide synthase oxygenase dimer with pterin and substrate," Science, vol.
Urine pterin and dihydropteridine reductase activity analysis should be routinely performed to rule out BH4 deficiency.
IL-6 has been shown to be modulated by calcium pterin, similar in structure to calcium folate which is more potent.
Fluorescence of pterin, 6-formylpterin, 6-carboxypterin and folic acid in aqueous solution: pH effects.
i-a) Photolyase is a monomeric protein of 55- 65 kDa with two chromophore cofactors, a pterin in the form of 5-10-methenyltetrahydrofolate
In the female striped plateau lizard the orange-coloured patches they develop during the reproductive season are based on pterin pigments, not on carotenoids, so this trade-off between ornaments and eggs may be eliminated," said Stacey Weiss.
These are transformed to yield heterocyclic compounds that are analogs of the ring systems of pyridine, pyrimidine, thiazole, pterin, and isoalloxazine (Begley, 2006).
One-carbon units at various oxidation levels are attached at N-5 of the pterin moiety, N-10 of the pABA moiety, or bridged between the two.
NOS contains the internal reductants NADPH and flavins, but without a fully-reduced (tetrahydro) pterin bound like BH4, product is not formed.
The Punch locus of Drosophila encodes GTP cyclohydrolase I, a multimeric enzyme that catalyzes the first step in pterin biosynthesis.