 The GFP protein family includes both fluorescent proteins and non-fluorescent chromoproteins.Through mutagenesis or irradiation, the non-fluorescent chromoproteins can be converted to fluorescent chromoproteins.An example of such converted chromoprotein is "kindling fluorescent proteins" or KFP1 which was converted from a mutated non-fluorescent "Anemonia sulcata" chromoprotein to a fluorescent chromoprotein.