Researchers identify an enzyme that chemically converts firefly luciferin, the molecule responsible for their glow, to an inactive form, sulfoluciferin. They hypothesize that this enzyme does this for storage, allowing the insect to stockpile the molecule until needed.

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Researchers identify an enzyme that chemically converts firefly luciferin, the molecule responsible for their glow, to an inactive form, sulfoluciferin. They hypothesize that this enzyme does this for storage, allowing the insect to stockpile the molecule until needed.