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Molecule Parameter List for CaMKII | 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 | AMPAR_CaMKII_
strong_coupling | 64 | Network |
Shared_Object_AMPAR_CaMKII_strong_coupling, CaMKII, CaM,
PP1, AMPAR_memb, PP2B,
PKA, AC, PP1_PSD,
AMPAR | | This is a model of tight coupling between the AMPAR trafficking bistability, and the CaMKII autophosphorylation bistability. In this model, the CaMKII activity is self sustaining only when AMPAR is turned on. Further, CaMKII turns on when AMPAR is turned on. |
CaMKII acting as a Molecule in AMPAR_CaMKII_strong_coupling Network
| Name | Accession Name | Pathway Name | Initial Conc.
(uM) | Volume
(fL) | Buffered | | CaMKII | AMPAR_CaMKII_
strong_coupling
Accession No. : 64 | CaMKII
Pathway No. : 272 | 20 | 0.09 | No | | Huge conc of CaMKII. In PSD it is 20-40% of protein, so we assume it is around 2.5% of protein in spine as a whole. This level is so high it is unlikely to matter much if we are off a bit. This comes to about 70 uM. |
CaMKII acting as a Summed Molecule in AMPAR_CaMKII_strong_coupling Network
CaMKII acting as an Enzyme in AMPAR_CaMKII_strong_coupling Network
CaMKII acting as a Product of an Enzyme in AMPAR_CaMKII_strong_coupling Network
CaMKII acting as a Substrate in a reaction in AMPAR_CaMKII_strong_coupling 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 | | CaMKII-bind-CaM | AMPAR_CaMKII_
strong_coupling
Accession No. : 64 | CaMKII
Pathway No. : 272 | 49.9997
(uM^-1 s^-1) | 5
(s^-1) | Kd(bf) = 0.1(uM) | - | Substrate
CaM-Ca4
CaMKII
Product
CaMKII-CaM
| | This is tricky. There is some cooperativity here arising from interactions between the subunits of the CAMKII holoenzyme. However, the stoichiometry is 1. Kb/Kf = 6e4 #/cell. Rate is fast (see Hanson et al Neuron 12 943-956 1994) so lets say kb = 10. This gives kf = 1.6667e-4 H&S AnnRev Biochem 92 give tau for dissoc as 0.2 sec at low Ca, 0.4 at high. Low Ca = 100 nM = physiol. |
CaMKII acting as a Product in a reaction in AMPAR_CaMKII_strong_coupling 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. |
** This is a trasport reation between compartments of different volumes. Therefore Kd is not applicable. Please Note Kf, Kb units are in number of molecules instead of concentration
| Database compilation and code copyright (C) 2022, Upinder S. Bhalla and NCBS/TIFR
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