Table 2.
Kinetic constants of the cross-bridge cycle of Scheme 8
| Animal and muscle | K0, mM−1 | K1, mM−1 | k1b, s−1 | k−1b, s−1 | k2, s−1 | k−2, s−1 | k4, s−1 | k−4, s−1 | K5, mM−1 | Perturbation | Source |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Rabbit psoas | 2.8 | 1.4 | 1530a | 1610a | 440 | 100 | 56 | 129 | 0.069 | Length | Kawai and Halvorson (1991) |
| Rabbit psoas | – | – | – | – | – | – | 79.2 | 114.7 | 0.27 | Pi | Dantzig et al. (1992) |
| Rabbit psoas, 15°C | – | – | – | – | – | – | 27 | 115 | 0.164 | Pi | Walker et al. (1992) |
| Rabbit psoas, 12°C | – | – | – | – | – | – | ~15b | ~36b | 0.255 | Pressure | Fortune et al. (1991) |
| Rabbit AM, type IIB | 5 | 0.84 | – | – | 526 | 328 | 143 | 81 | 0.26 | Length | Galler et al. (2005) |
| Rabbit AM, type IID | 18 | 4.9 | – | – | 352 | 121 | 58 | 63 | 0.16 | Length | Galler et al. (2005) |
| Rabbit EDL and soleus, type IIA | – | 8.7 | – | – | 198 | 51 | 13.6 | 13.6 | 0.18 | Length | Galler et al. (2005) |
| Drosophila melanogaster, indirect flight, 15°C | – | 0.19 | – | – | 3698 | 8 | 1778 | 11 | – | Length | Swank et al. (2006) |
| Lethocerus colossicus, indirect flight | – | 0.7 | – | – | 900 | 180 | – | 150c | 0.13c | Length | Marcussen and Kawai (1990) |
| Rabbit soleus, type I | 18 | 1.2 | 90 | 100 | 21 | 14.1 | 5.7 | 4.5 | 0.18 | Length | Wang and Kawai (1997) |
| Ferret cardiac | – | 0.99 | 270 | 280 | 48 | 14 | 11 | 107 | 0.060 | Length | Kawai et al. (1993) |
| Porcine cardiac | 80 | 10.6 | – | – | 13.0 | 9.1 | 3.2 | 10.5 | 0.104 | Length | Zhao and Kawai (1996) |
| Bovine cardiac, 25°C | – | 9.1 | – | – | 26.6 | 12.1 | 7.1 | 12.6 | 0.14 | Length | Fujita et al. (2002) |
Temperature at 20°C unless otherwise stated. AM = adductor mangus, EDL = extensor digitorum longus. The nomenclature of the kinetic constants is based on Scheme 8 and common units are used. Hence, it does not necessarily reflect the nomenclature used in the original publication. k1b and k−1b are defined in Scheme 9
a
Values based on Zhao and Kawai (1993)
b
Estimated from Fig. 4A of Fortune et al. (1991) and k4 + k−4 = 51 s−1 as described in its legend
c
Estimate based on Fig. 8 of Marcussen and Kawai (1990)