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Molecule Parameter List for R2C2-cAMP | 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 | Synaptic_
Network | 16 | Network |
Shared_Object_Synaptic_Network, PKC, PLA2,
PLCbeta, Gq, MAPK,
Ras, EGFR, Sos,
PLC_g, CaMKII, CaM,
PP1, PP2B, PKA,
AC, CaRegulation | This model is an annotated version of the synaptic signaling network.
The primary reference is Bhalla US and Iyengar R. Science (1999) 283(5400):381-7 but several of the model pathways have been updated.
Bhalla US Biophys J. 2002 Aug;83(2):740-52
Bhalla US J Comput Neurosci. 2002 Jul-Aug;13(1):49-62 |
R2C2-cAMP acting as a Molecule in Synaptic_Network Network
| Name | Accession Name | Pathway Name | Initial Conc.
(uM) | Volume
(fL) | Buffered | | R2C2-cAMP | Synaptic_
Network
Accession No. : 16 | PKA
Pathway No. : 84 | 0 | 1000 | No | | One cAMP bound to site B1 on the regulatory subunits. |
R2C2-cAMP acting as a Substrate in a reaction in Synaptic_Network 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 | cAMP-bind-site-B
2 | Synaptic_
Network
Accession No. : 16 | PKA
Pathway No. : 84 | 54
(uM^-1 s^-1) | 33
(s^-1) | Kd(bf) = 0.6111(uM) | - | Substrate
R2C2-cAMP
cAMP
Product
R2C2-cAMP2
| | For now let us set this to the same Km (1e-7M) as site B1. This gives kf/kb = .7e-7M * 1e6 / (6e5^2) : 1/(6e5^2) = 2e-13:2.77e-12 |
R2C2-cAMP acting as a Product in a reaction in Synaptic_Network 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 | cAMP-bind-site-B
1 | Synaptic_
Network
Accession No. : 16 | PKA
Pathway No. : 84 | 54
(uM^-1 s^-1) | 33
(s^-1) | Kd(bf) = 0.6111(uM) | - | Substrate
R2C2
cAMP
Product
R2C2-cAMP
| | Hasler et al FASEB J 6:2734-2741 1992 say Kd =1e-7M for type II, 5.6e-8 M for type I. Smith et al PNAS USA 78:3 1591-1595 1981 say that Ka1 is 2.1e7/M which gives a Kd of 47 nM, Kan = 5e8/M or Kd of 2nM. I prefer numbers from Ogreid and Doskeland Febs Lett 129:2 287-292 1981. Their conditions are more physiological. They have figs suggesting time course of complete assoc is < 1 min. |
| Database compilation and code copyright (C) 2022, Upinder S. Bhalla and NCBS/TIFR
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