CHARACTERISTIC
* Brightness is a product of extinction coefficient and quantum yield, divided by 1000.
Molecular weight, kDa	26
Polypeptide length, aa	235
Fluorescence color	far-red
Excitation maximum, nm	588
Emission maximum, nm	635
Quantum yield	0.34
Extinction coefficient, M^-1cm^-1	65 000
Brightness*	22.1
Brightness, % of EGFP	67
pKa	5.5
Structure	dimer
Aggregation	no
Maturation rate at 37°C	super fast
Photostability	high
Cell toxicity	not observed
Main advantages	bright and fast-maturing far-red fluorescent protein; high pH-stability and photostability
Possible limitations	dimer, limited applicability for fusions generation