GREEN FLUORESCENT PROTEIN

 Important information about GFP (Green Fluorescent Protein): 

· The purified protein appears yellow under ordinary lighting, but glows bright green under sunlight or ultraviolet light

· GFP is a marker in intact cells for gene expression and protein targetting, used as genetically encoded fluorescent markers

· Two variants of GFP absorb and emit light at different wavelengths to each other and are bound to interacting proteins