Firefly Bioluminescence (Luciferin Oxidation)
Luciferin + ATP + O2 → Oxyluciferin + AMP + PPi + CO2 + hν
Overview
Firefly luciferase catalyzes the ATP-dependent oxidation of luciferin, producing oxyluciferin in an electronically excited state that emits yellow-green light (560 nm). This is the most efficient bioluminescent system known, converting about 88% of chemical energy to light with almost no heat waste.
Participants
| Role | Substance | Coefficient | State |
|---|---|---|---|
| Product | Carbon Dioxide CO₂ | 1 | (g) |
Everyday Example
Fireflies flashing on summer evenings use this reaction to communicate with potential mates, each species having a unique flash pattern.
Industrial Importance
Luciferase reporter assays are indispensable in biomedical research, drug discovery, and genetic engineering for monitoring gene expression.
Properties
- Type
- Photochemical
- Reversible
- No
- Energy
- Exothermic
- Catalyst
- Luciferase enzyme
Related Reactions
Chlorophyll Fluorescence
Cis-Trans Isomerization of Retinal
Dye-Sensitized Solar Cell (Grätzel Cell)
Luminol Chemiluminescence
Ozone Decomposition by UV
Ozone Formation by UV Light
Photocatalytic NOx Removal
Photocatalytic Water Splitting (TiO₂)
Photochemical Cycloaddition ([2+2])
Photochemical Smog Formation (NO₂ Photolysis)
Frequently Asked Questions
What is the equation for Firefly Bioluminescence (Luciferin Oxidation)?
The balanced equation is: Luciferin + ATP + O₂ → Oxyluciferin + AMP + PPᵢ + CO₂ + hν.
What type of reaction is Firefly Bioluminescence (Luciferin Oxidation)?
Firefly Bioluminescence (Luciferin Oxidation) is a photochemical reaction.
Is Firefly Bioluminescence (Luciferin Oxidation) exothermic or endothermic?
Firefly Bioluminescence (Luciferin Oxidation) is exothermic (releases energy).
What conditions are needed for Firefly Bioluminescence (Luciferin Oxidation)?
This reaction requires a catalyst (Luciferase enzyme).