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Enzyme List for pathway Ras (Pathway Number 63) | Molecule Name/ Site Name | Km (uM) | kcat (1/s) | Ratio (k2/k3) | Enzyme Type | Substrate | Product |
1 |
Enzyme Activity: GAP-inact-ras
Enzyme Molecule: GAP | 1.0104 | 10 | 100 | explicit E-S complex | GTP-Ras
| GDP-Ras
| | From Eccleston et al JBC 268(36)pp27012-19 get Kd < 2uM, kcat - 10/sec From Martin et al Cell 63 843-849 1990 get Kd ~ 250 nM, kcat = 20/min I will go with the Eccleston figures as there are good error bars (10%). In general the values are reasonably close. k1 = 1.666e-3/sec, k2 = 1000/sec, k3 = 10/sec (note k3 is rate-limiting) |
2 |
Enzyme Activity: GEF*-act-ras
Enzyme Molecule: GEF* | 0.505051 | 0.02 | 4 | explicit E-S complex | GDP-Ras
| GTP-Ras
| | Kinetics same as GEF-bg-act-ras |
Pathway Details Molecule List Enzyme List Reaction List
| Database compilation and code copyright (C) 2022, Upinder S. Bhalla and NCBS/TIFR This Copyright is applied to ensure that the contents of this database remain freely available. Please see FAQ for details. |
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