SOLVED: The enzyme called luciferase catalyzes the reaction that allows fireflies to emit light The first step in this reaction involves the substrate compound called luciferin , reacting with ATP. The luciferase enzyme has been crystallized bound to the product of this one-step reaction, as shown in the Pymol diagram below. (Dotted lines indicate stabilizing interactions between active site residues and the product:)HO_COzGln338luciferinNote:Lys529Blue nitrogen Red oxygen Orange sulfur or phos

Luciferase is a class of oxidative enzymes that produce light (bioluminescence) by catalyzing the reaction between a substrate called luciferin and oxygen, often with ATP, resulting in an excited- state molecule that releases energy as photons (light) as it returns to its ground state. | Tsouryel Ben Israel