What is pteridine ring explain?
[ tĕr′ĭ-dēn′ ] Any of a group of organic compounds having two fused six-member rings each containing two nitrogen atoms and four carbon atoms. One of the rings is a pyrimidine, the other a pyrazine. Pteridines include folic acid and the pigments of butterfly wings.
What is pteridine precursor?
The pteridine synthesis pathway has different branches, one of them leading to the formation of sepiapterin as a precursor for different types of pteridine pigments. Tetrahydrobiopterin is an important cofactor of the tyrosinase enzyme in melanophores, which directly links melanin and pteridine synthesis.
What is pteridine made of?
Pteridine is an aromatic chemical compound composed of fused pyrimidine and pyrazine rings. A pteridine is also a group of heterocyclic compounds containing a wide variety of substitutions on this structure.
Which is pteridine derivative?
Triamterene, a pteridine derivative, is a diuretic that acts by inhibiting sodium reabsorption in the late distal tubule and collecting ducts.
What are Pteridine pigments?
Pteridine pigments belong to the family of aromatic compounds composed of the fusion of pyrimidine and pyrazine rings (28, 42, 43). Among these, the Hemiptera are known to produce erythropterin, which is red, in addition to sepiapterin, xanthopterin, and chrysopterin, all of which are yellow (SI Appendix, Fig.
Which vitamin is made up of Pteridine nucleus?
Folic acid (pteroylmonoglutamic acid) consists of one pteridine nucleus, one molecule of para-amino benzoic acid and one glutamic acid moiety (Illus. 12-1). Para-amino benzoic acid (PABA) is required by some microorganisms for the synthesis of folic acid.
What are pteridine pigments?
Which vitamin is made up of pteridine nucleus?
What is Pteridine used for?
A folate analog used to treat the toxic effects of methotrexate and other folate antagonists, to treat megaloblastic anemia, and to provide palliative treatment of colorectal cancer.