Luciferases are enzymes that catalyse light-emitting reactions in living organisms - bioluminescence. They occur in several species of firefly and in many species of bacterium. Firefly Luciferases are...Luciferases are enzymes that catalyse light-emitting reactions in living organisms - bioluminescence. They occur in several species of firefly and in many species of bacterium. Firefly Luciferases are extracted by differential centrifugation and purified by gel filtration. Luciferins are substrates of luciferases . Firefly luciferin emits at 562 nm on reaction with oxygen, catalysed by luciferase in the presence of adenosine triphosphate (ATP) and magnesium ions.
Many reactions are known that generate products in electronically excited states, and this is especially evident when the electronically excited products go to the ground state by the emission of visi...Many reactions are known that generate products in electronically excited states, and this is especially evident when the electronically excited products go to the ground state by the emission of visible light. This behavior is known as chemiluminescence and is transduction of chemical energy into radiant energy. Chemiluminescence is possible only when the ΔH of the reaction is sufficiently large to allow for production of at least one of the products in an electronically excited state.
