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Molecule Parameter List for Sos* | The statistics table lists the distribution of a molecule acting either as a substrate, product, enzyme or as a molecule within the network.
The text color of a molecule is highlighted by  color. | | Statistics |
Accession and Pathway Details | |
| Accession Name | Accession No. | Accession Type | Pathway Link | Ajay_Bhalla_
2004_Feedback_
Tuning | 78 | Network |
Shared_Object_Ajay_Bhalla_2004_Feedback_Tuning, PKC, PLA2,
PLCbeta, Gq, MAPK,
Ras, EGFR, Sos,
PLC_g, CaMKII, CaM,
PP1, PP2B, PKA,
AC | | This model is taken from Ajay SM, Bhalla US. Eur J Neurosci. 2004 Nov;20(10):2671-80. This is the feedback model from Figure 8a. |
Sos* acting as a Molecule in Ajay_Bhalla_2004_Feedback_Tuning Network
Sos* acting as a Product of an Enzyme in Ajay_Bhalla_2004_Feedback_Tuning Network
Enzyme Molecule /
Enzyme Activity | Accession Name | Pathway Name | Km (uM) | kcat (s^-1) | Ratio | Enzyme Type | Reagents | MAPK* /
phosph_Sos | Ajay_Bhalla_
2004_Feedback_
Tuning
Accession No. : 78 | Shared_Object_
Ajay_Bhalla_
2004_Feedback_
Tuning
Pathway No. : 347 | 2.56406 | 10 | 4 | explicit E-S complex | Substrate
Sos
Product
Sos*
| | See Porfiri and McCormick JBC 271:10 pp5871 1996 for the existence of this step. We'll take the rates from the ones used for the phosph of Raf by MAPK. Sep 17 1997: The transient activation curve matches better with k1 up by 10 x. |
Sos* acting as a Substrate in a reaction in Ajay_Bhalla_2004_Feedback_Tuning Network
| 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 reaction are not consider. |
| | Name | Accession Name | Pathway Name | Kf | Kb | Kd | tau | Reagents | | 1 | Grb2_bind_Sos* | Ajay_Bhalla_
2004_Feedback_
Tuning
Accession No. : 78 | Sos
Pathway No. : 355 | 0.025
(uM^-1 s^-1) | 0.0168
(s^-1) | Kd(bf) = 0.672(uM) | - | Substrate
Grb2
Sos*
Product
Sos*.Grb2
| | | Same rates as Grb2_bind_Sos: Porfiri and McCormick JBC 271:10 pp 5871 1996 show that the binding is not affected by the phosph. | | 2 | dephosph_Sos | Ajay_Bhalla_
2004_Feedback_
Tuning
Accession No. : 78 | Sos
Pathway No. : 355 | 0.001
(s^-1) | 0
(s^-1) | - | - | Substrate
Sos*
Product
Sos
| | | The only clue I have to these rates is from the time courses of the EGF activation, which is around 1 to 5 min. The dephosph would be expected to be of the same order, perhaps a bit longer. Lets use 0.002 which is about 8 min. Sep 17: The transient activation curve matches better with kf = 0.001 |
| Database compilation and code copyright (C) 2022, Upinder S. Bhalla and NCBS/TIFR
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