Store lyophilized/reconstituted at -20°C, once reconstituted make aliquots to avoid repeated freeze-thaw cycles. Please, remember to spin tubes briefly prior to opening them to avoid any losses that might occur from lyophilized material adhering to the cap or sides of the tubes.
YFP (Yellow Fluorescent Protein) is a genetic mutant of green fluorescent protein (GFP). YFP has an excitation peak at 514 nm and emission peak at 527 nm.