a naturally occurring fluorescent protein synthesized by the jellyfish Aequora Victoria.

Green Flourescent Protein. An intrinsically fluorescent protein from the jellyfish Aequorea victoria. Gene fusions with GFP are commonly used for determining protein localization by fluorescence microscopy.

green fluorescent protein. a protein produced by a jellyfish Aequorea victoria which fluoresces in the lower green portion of the visible spectrum when exposed to blue light. GFP has become an invaluable tool in contemporary cell and molecular biology research, because its intrinsic fluorescence can be visualized in living cells. GFP has become well established as a marker of gene expression and protein targeting in intact cells and organisms. Mutagenesis and engineering of GFP into chimeric proteins are opening new vistas in physiological indicators, biosensors, and photochemical memories

green fluorescent protein. protein produced by jellyfish that glows when viewed under a specific wavelength of light. Used by researchers as a tool to tag and visualize specific proteins within a cell.