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	633
Quantum yield	0.44
Extinction coefficient, M^-1cm^-1	67 000
Brightness*	29.5
Brightness, % of EGFP	89
pKa	5.4
Structure	dimer
Aggregation	no
Maturation rate at 37°C	super fast
Photostability,widefield (sec)	72
Cell toxicity	not observed
Main advantages	super bright and fast-maturing far-red fluorescent protein; high pH-stability
Possible limitations	dimer, limited applicability for fusions generation, medium photostability