Table 2.
Diffusion coefficients
| Method, conditions | Diffusing species | D (μm2/s) Mean ±SD |
Number of cells or measurements |
|---|---|---|---|
| Cytoplasm of live cells | |||
| FRAP live interphase cells | mEGFP monomer | 22 | 9 |
| FCS live interphase cells | mEGFP monomer | 27. ± 8.5 | 20 |
| FRAP live interphase cells | mEGFP-Myo2 | 3 | 8 |
| FRAP live mitotic cells | mEGFP-Myo2 | 2.5 | 8 |
| FCS live interphase cells | mEGFP-Myo2 | 1.8 ± 0.5 | 20 |
| FCS live mitotic cells | mEGFP-Myo2 | 1.9 ± 0.5 | 20 |
| Diluted cell extracts | |||
| FCS diluted cell extract 50 mM KCl | mEGFP monomer | 76.7 ± 23.0 | 60 |
| FCS diluted cell extract 50 mM KCl | mEGFP-Myo2 | 37.8 ± 9.4 | 60 |
| FCS diluted cell extract 200 mM KCl | mEGFP-Myo2 | 29.7 ± 3.4 | 60 |
| FCS diluted cell extract 400 mM KCl | mEGFP-Myo2 | 30.0 ± 4.7 | 60 |
In FCS experiments, 10 measurements were acquired and averaged from single points in cells or cell extracts. The samples consisted of 20 cells or 20 points in each of 3 cell extracts.