Table 1

Properties of hue-shifted mTFP1 variants


Excitation maximum (nm)
Emission maximum (nm)
ε(mM-1 cm-1)
Φ
Brightnessa (mM-1 cm-1)
pKa
Photostabilityb

mTFP1-Y67W
424/440c
461/482c
13
0.02
0.3
NDd
ND
mTFP1-Y67H
369e
NAf
7
NA
NA
ND
NA
G1
487
503
43
0.60
26
ND
ND
G2
487
503
60
0.65
39
ND
65
G3
498
515
70
0.70
49
ND
5.5
mWasabi
493
509
70
0.80
56
6.5
93

mTFP1g
462
492
64
0.85
54
4.3
110
EGFPh
488
507
56
0.60
34
6.0
174

aProduct of extinction coefficient and quantum yield.

bTime in seconds to bleach from an initial emission rate of 1000 to 500 photons s-1 molecule-1.

cValues for both 'humps' are provided.

dND, not determined.

eThis value is the absorption maximum. No significant fluorescence was detected for mTFP1-Y67H.

fNA, not applicable.

gValues from [19].

hValues from [7].

Ai et al. BMC Biology 2008 6:13   doi:10.1186/1741-7007-6-13