1. A heterocyclic organic compound containing a fused ring system of a pyrimidine and a pyrazine ring; found in nature in various forms including vitamins and pigments.
Usage: chemistry; biochemistry; technical

Examples

• Pteridine derivatives are important cofactors in many enzymatic reactions.
• Folic acid is a pteridine-based vitamin essential for cell division.
• The bright yellow pigments in butterfly wings often contain pteridine compounds.
• Researchers studied pteridine metabolism in the fruit fly Drosophila.
• Pteridine compounds play a crucial role in one-carbon transfer reactions in cells.