Comparison of Red & Far-Red Fluorescence Proteins
| FP | excitation/emission maxima (nm) | extinction coefficient (M−1 cm−1) | quantum yield | relative brightness | extinction coefficient at 633 nm (M−1 cm−1) | relative brightness with 633 nm excitation | maturation half-time (h) | photobleaching half-time (s) | pKa |
| DsRed1 | 558/583 | 51500 | 0.71 | 1 | – | – | 11 | –; | – |
| mPlum | 587/649 | 29300 | 0.1 | 0.08 | 2300 | 0.02 | 1.6 | 31 ± 2 | 5.5 |
| mRaspberry | 594/627 | 42000 | 0.14 | 0.16 | 3600 | 0.03 | 2.1 | 21 ± 2 | 5 |
| mKate2 | 586/630 | 56400 | 0.39 | 0.6 | 2300 | 0.04 | 0.8 | 23 ± 2 | 6.5 |
| Katushka | 584/631 | 76300 | 0.32 | 0.67 | 4600 | 0.03 | 0.6 | 15 ± 1 | 7.5 |
| RFP637 | 585/637 | 53800 | 0.22 | 0.32 | 4600 | 0.03 | 2.4 | 60 ± 4 | 4.5 |
| RFP639 | 587/639 | 74700 | 0.21 | 0.43 | 6700 | 0.05 | 1.7 | 29 ± 3 | 4.5 |
| E2-Crimson | 611/646 | 126000 | 0.23 | 0.79 | 55400 | 1 | 0.4 | 26 ± 3 | 4.5 |
