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Reaction List for pathway Ras (Pathway Number 523) | Kd is calculated only for second order reactions, like nA+nB <->nC or nA<->nC+nD, where n is number and A,B,C,D are molecules, where as for first order reactions Keq is calculated. Kd for higher order reactions is not considered. |   | Name | Kf | Kb | Kd | tau | Substrate | Product | 1 |
CaM-bind-GEF | 199.995 (uM^-1 s^-1) | 1 (s^-1) | Kd(bf) = 0.005(uM) | - | inact-GEF CaM-Ca4
| CaM-GEF
| | We have no numbers for this. It is probably between the two extremes represented by the CaMKII phosph states, and I have used guesses based on this. kf=1e-4 kb=1 The reaction is based on Farnsworth et al Nature 376 524-527 1995 | 2 |
dephosph-GAP | 0.1 (s^-1) | 0 (s^-1) | - | - | GAP*
| GAP
| | Assume a reasonably good rate for dephosphorylating it, 1/sec | 3 |
dephosph-GEF | 1 (s^-1) | 0 (s^-1) | - | - | GEF*
| inact-GEF
| 4 |
Ras-intrinsic-GT Pase | 0.0001 (s^-1) | 0 (s^-1) | - | - | GTP-Ras
| GDP-Ras
| | This is extremely slow (1e-4), but it is significant as so little GAP actually gets complexed with it that the total GTP turnover rises only by 2-3 X (see Gibbs et al, JBC 265(33) 20437-20422) and Eccleston et al JBC 268(36) 27012-27019 kf = 1e-4 |
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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