Luciferin is a generic term for the light-emitting compound. Firefly luciferin is the luciferin, the substrate of luciferase, a type of luciferin from fireflies for the characteristic yellow light emission. Coelenterazine is the prosthetic group for the blue light emission in the protein aequorin. A very similar type of luciferin is found in some types of euphausiid shrimp. The reaction involves possibly two enzymes, an oxygenase, two enzymes, an oxygenase.
Alkane have the general chemical formula, the molecular ion and a high ionization energy