Substrates (Reference) | Jmax nmol mg−1 min−1 | KtmM | Jmax/Kt | |
---|---|---|---|---|
Na-DCVC (present) | 60** | 0.45 | 133 | |
Na-phenylalanine (present) | 35*** | 0.73 | 48 | |
Na-succinate (Wright et al.,1983) | 77* | 0.70 | 110 | |
Na-lactate (Nord et al.,1982) | 50* | 0.48 | 104 | |
Na-betaine (Wunz and Wright, 1993) | 51** | 4.1 | 12 | |
H-betaine (Wunz and Wright, 1993) | 103** | 2.8 | 37 | |
choline (Wright et al.,1992) | 12** | 0.10 | 120 | |
TEA (Wright and Wunz, 1988) | 11** | 0.12 | 92 |
All rates expressed in terms of nmol mg−1min−1, although actual measurements of the initial rate of substrate transport were based on exposures to radiolabeled substrate of either 1*, 3** or 5*** sec duration.