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Molecule Parameter List for Raf-GTP-Ras* | 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 | MAPK_network_
2003 | 50 | Network |
Shared_Object_MAPK_network_2003, PKC, PLA2,
PLCbeta, Gq, MAPK,
Ras, EGFR, Sos,
PLC_g, CaMKII, CaM,
PP1, PP2B, PKA,
AC | | This is a network model of many pathways present at the neuronal synapse. The network has properties of temporal tuning as well as steady-state computational properties. In its default form the network is bistable.Bhalla US Biophys J. 2004 Aug;87(2):745-53 |
Raf-GTP-Ras* acting as a Molecule in MAPK_network_2003 Network
| Name | Accession Name | Pathway Name | Initial Conc.
(uM) | Volume
(fL) | Buffered | | Raf-GTP-Ras* | MAPK_network_
2003
Accession No. : 50 | MAPK
Pathway No. : 211 | 0 | 1000 | No | | |
Raf-GTP-Ras* acting as an Enzyme in MAPK_network_2003 Network
| | Enzyme Molecule /
Enzyme Activity | Accession Name | Pathway Name | Km (uM) | kcat (s^-1) | Ratio | Enzyme Type | Reagents | | 1 | Raf-GTP-Ras* /
Raf-GTP-Ras*.1
| MAPK_network_
2003
Accession No. : 50 | MAPK
Pathway No. : 211 | 0.159091 | 0.105 | 4 | explicit E-S complex | Substrate
MAPKK
Product
MAPKK-ser
| | | Kinetics are the same as for the craf-1* activity, ie., k1=1.1e-6, k2=.42, k3 =0.105 These are based on Force et al PNAS USA 91 1270-1274 1994. These parms cannot reach the observed 4X stim of MAPK. So lets increase the affinity, ie, raise k1 10X to 1.1e-5 Lets take it back down to where it was. Back up to 5X: 5.5e-6 | | 2 | Raf-GTP-Ras* /
Raf-GTP-Ras*.2
| MAPK_network_
2003
Accession No. : 50 | MAPK
Pathway No. : 211 | 0.159091 | 0.105 | 4 | explicit E-S complex | Substrate
MAPKK-ser
Product
MAPKK*
| | | Same kinetics as other c-raf activated forms. See Force et al PNAS 91 1270-1274 1994. k1 = 1.1e-6, k2 = .42, k3 = 1.05 raise k1 to 5.5e-6 |
Raf-GTP-Ras* acting as a Product in a reaction in MAPK_network_2003 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 | | Ras-act-craf | MAPK_network_
2003
Accession No. : 50 | Shared_Object_
MAPK_network_
2003
Pathway No. : 206 | 24
(uM^-1 s^-1) | 0.5
(s^-1) | Kd(bf) = 0.0208(uM) | - | Substrate
GTP-Ras
craf-1*
Product
Raf-GTP-Ras*
| | Assume the binding is fast and limited only by the amount of Ras* available. So kf=kb/[craf-1] If kb is 1/sec, then kf = 1/0.2 uM = 1/(0.2 * 6e5) = 8.3e-6 Later: Raise it by 10 X to 4e-5 From Hallberg et al JBC 269:6 3913-3916 1994, 3% of cellular Raf is complexed with Ras. So we raise kb 4x to 4 This step needed to memb-anchor and activate Raf: Leevers et al Nature 369 411-414 (I don't.... |
| Database compilation and code copyright (C) 2022, Upinder S. Bhalla and NCBS/TIFR
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