The green fluorescent protein (GFP) is a protein composed of 238 amino acids (26.9kDa), which exhibits bright green fluorescence when exposed to blue light.Although many other marine organisms have similar green fluorescent proteins, GFP traditionally refers to the protein first isolated from the jellyfish Aequorea victoria. The GFP from A. victoria has a major excitation peak at a wavelength of 395 nm and a minor one at 475 nm. Its emission peak is at 509 nm which is in the lower green portion of the visible spectrum. The GFP from the sea pansy (Renilla reniformis) has a single major excitation peak at 498 nm.
Storage: Store at -20 °C for one year. Avoid repeated freeze/thaw cycles.