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Molecule Parameter List for PKA-active | 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_PKM_Tuning | 76 | Network |
PKC, Shared_Object_Ajay_Bhalla_2004_PKM_tuning, PLA2,
PLCbeta, Gq, MAPK,
Ras, EGFR, Sos,
PLC_g, CaMKII, CaM,
PP1, PP2B, PKA,
AC, PKM | | This model is taken from the Ajay SM, Bhalla US. Eur J Neurosci. 2004 Nov;20(10):2671-80. This is the reference feedforward model from Figure 8a. |
PKA-active acting as a Molecule in Ajay_Bhalla_2004_PKM_Tuning Network
PKA-active acting as an Enzyme in Ajay_Bhalla_2004_PKM_Tuning Network
| | Enzyme Molecule /
Enzyme Activity | Accession Name | Pathway Name | Km (uM) | kcat (s^-1) | Ratio | Enzyme Type | Reagents | | 1 | PKA-active /
PKA-phosph-GEF
| Ajay_Bhalla_
2004_PKM_Tuning
Accession No. : 76 | Shared_Object_
Ajay_Bhalla_
2004_PKM_tuning
Pathway No. : 312 | 7.49996 | 9 | 4 | explicit E-S complex | Substrate
inact-GEF
Product
inact-GEF*
| | | This pathway inhibits Ras when cAMP is elevated. See: Hordijk et al JBC 269:5 3534-3538 1994 Burgering et al EMBO J 12:11 4211-4220 1993 The rates are the same as used in PKA-phosph-I1 | | 2 | PKA-active /
PKA-phosph-I1
| Ajay_Bhalla_
2004_PKM_Tuning
Accession No. : 76 | Shared_Object_
Ajay_Bhalla_
2004_PKM_tuning
Pathway No. : 312 | 7.49996 | 9 | 4 | explicit E-S complex | Substrate
I1
Product
I1*
| | | #s from Bramson et al CRC crit rev Biochem 15:2 93-124. They have a huge list of peptide substrates and I have chosen high-ish rates. These consts give too much PKA activity, so lower Vmax 1/3. Now, k1 = 3e-5, k2 = 36, k3 = 9 (still pretty fast). Also lower Km 1/3 so k1 = 1e-5 Cohen et al FEBS Lett 76:182-86 1977 say rate =30% PKA act on phosphokinase beta. | | 3 | PKA-active /
phosph-PDE
| Ajay_Bhalla_
2004_PKM_Tuning
Accession No. : 76 | Shared_Object_
Ajay_Bhalla_
2004_PKM_tuning
Pathway No. : 312 | 7.49996 | 9 | 4 | explicit E-S complex | Substrate
cAMP-PDE
Product
cAMP-PDE*
| | | Same rates as PKA-phosph-I1 |
PKA-active acting as a Substrate in a reaction in Ajay_Bhalla_2004_PKM_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 | | inhib-PKA | Ajay_Bhalla_
2004_PKM_Tuning
Accession No. : 76 | PKA
Pathway No. : 326 | 60.0003
(uM^-1 s^-1) | 1
(s^-1) | Kd(bf) = 0.0167(uM) | - | Substrate
PKA-active
PKA-inhibitor
Product
inhibited-PKA
| | This has to be set to zero for matching the expts in vitro. In vivo we need to consider the inhibition though. kf = 1e-5 kb = 1 |
PKA-active acting as a Product in a reaction in Ajay_Bhalla_2004_PKM_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. |
| Database compilation and code copyright (C) 2022, Upinder S. Bhalla and NCBS/TIFR
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