The present invention provides a fluorescent protein having an amino acid sequence of the green fluorescent protein, the yellow fluorescent protein or mutants thereof wherein the 46th phenylalanine residue is substituted with a leucine residue. According to the present invention, there are provided novel...http://www.google.fr/patents/US7595375?utm_source=gb-gplus-shareBrevet US7595375 - Fluorescent protein