Table 3. Table of properties for fluorescent proteins.

Fluorescent Protein	Ex/Em maxima (nm)	Fluorescence quantum yield	O2 requirement	Number of amino acids	Molecular weight (kDa)
Chlopsid FP I	489/523	0.47	no	142	15.8
Chlopsid FP II	489/523	0.37	no	140	15.5
Chlopsid FP I-GGG Mutant	489/523	0.11	no	142	15.3
UnaG [11]	498/527	0.51	no	139	16.5