Table 2.
Curve fitting of FRAP data
GFP-actinF(0)F(e)cτ1 (sec)τ2 (sec)
Control WT 0.0960 0.8797 0.4161 1.5112 44.0287 
 G13R 0.1041 1.0019 0.4637 1.4744 69.3191 
 R62D 0.1021 1.0002 0.4506 1.5724 70.2468 
DMSO G13R 0.10126 1.0006 0.45883 1.5190 69.4147 
 R62D 0.098472 1.0035 0.45535 1.5174 72.7302 
LY294002 G13R 0.1274 1.0004 0.34306↓ 1.3793 69.8583 
 R62D 0.16293 0.99987 0.3464↓ 1.4974 68.949 
SF1670 G13R 0.087312 0.9997 0.57153↑ 1.6203 70.3258 
 R62D 0.081741 1.0016 0.57138↑ 1.5003 70.0223 
Scramble RNAi G13R 0.099384 0.99966 0.45277 1.5389 70.3558 
 R62D 0.098478 1.0030 0.45301 1.5687 72.6469 
Profilin 1/2 RNAi G13R 0.16664 0.9999 0.17228↓ 1.5483 72.8719 
 R62D 0.16208 1.0016 0.17482↓ 1.5657 74.7082 
GFP-actinF(0)F(e)cτ1 (sec)τ2 (sec)
Control WT 0.0960 0.8797 0.4161 1.5112 44.0287 
 G13R 0.1041 1.0019 0.4637 1.4744 69.3191 
 R62D 0.1021 1.0002 0.4506 1.5724 70.2468 
DMSO G13R 0.10126 1.0006 0.45883 1.5190 69.4147 
 R62D 0.098472 1.0035 0.45535 1.5174 72.7302 
LY294002 G13R 0.1274 1.0004 0.34306↓ 1.3793 69.8583 
 R62D 0.16293 0.99987 0.3464↓ 1.4974 68.949 
SF1670 G13R 0.087312 0.9997 0.57153↑ 1.6203 70.3258 
 R62D 0.081741 1.0016 0.57138↑ 1.5003 70.0223 
Scramble RNAi G13R 0.099384 0.99966 0.45277 1.5389 70.3558 
 R62D 0.098478 1.0030 0.45301 1.5687 72.6469 
Profilin 1/2 RNAi G13R 0.16664 0.9999 0.17228↓ 1.5483 72.8719 
 R62D 0.16208 1.0016 0.17482↓ 1.5657 74.7082 

The comprehensive table summarizes all five parameters (F[0], F[e], c, τ1, and τ2) of the double exponential function used to fit the FRAP curves of WT actin or actin mutants. Note that τ1 and τ2 are similar among actin mutants under different conditions. Arrows indicate the changes with bold numbers depicting an increase over the control.

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