Green fluorescent protein, computer model. This protein is found in the jellyfish Aequorea victoria. When ultraviolet or blue light shines on the protein, it emits green light. This property has made GFP a popular research tool in genetic experiments. The gene that codes for the protein can be introduced to the genome of any animal, plant or fungus, and the cells and tissues that express it will glow green under blue or UV light. Many such "glow in the dark" organisms have been created, including pigs, rabbits and mice. In this model, the secondary structure of the protein is shown. The flat green arrows represent beta sheet regions, the central blue region is an alpha helix.
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