Isoform | Empirical Modelsa,b,c | Two-Site Model | ||||||||
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Km or S50 | Ksi | Vmax | Ks | Vmax | α, βd | |||||
μM | pmol/min · mg protein | μM | pmol/min · mg protein | |||||||
1A1a | 113 ± 3 | 308 ± 16 | ||||||||
1A3b | 1159 ± 75 | 741 ± 55 | 1265 ± 51 | 1329 ± 72 | 1408 ± 60 | α = 0.28 ± 0.04; β = 0.11 ± 0.03 | ||||
1A4 | N.D. | |||||||||
1A6a | 109 ± 3.7 | 143,897 ± 1713 | ||||||||
1A7a | 14 ± 1.2 | 36,037 ± 810 | ||||||||
1A8b | 730 ± 67 | 1263 ± 146 | 9213 ± 603 | 750 ± 63 | 9277 ± 534 | α = 0.77 ± 0.18; β = 0.21 ± 0.04 | ||||
1A9b | 8.0 ± 0.6 | 226 ± 53 | 9016 ± 364 | 8.2 ± 2.9 | 7198 ± 288 | β = 0.9 ± 0.5f | ||||
1A10a | 31 ± 2 | 13,688 ± 300 | ||||||||
2B7c e | 335 ± 8 | 168 ± 5 | 1914 ± 336 | 176 ± 5 | α = 0.03 ± 0.01g | |||||
2B15b | 253 ± 46 | 1744 ± 384 | 26 ± 2 | 463 ± 73 | 37 ± 4 | β = 0.16 ± 0.07f | ||||
2B17b | 4204 ± 559 | 326 ± 48 | 50 ± 6 |
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