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Accession Type:
Network
Ajay_Bhalla_
2004_PKM_Tuning
PKC
Shared_Object_
Ajay_Bhalla_
2004_PKM_tuning
PLA2
PLCbeta
Gq
 Molecule
 Reaction
MAPK
Ras
EGFR
Sos
PLC_g
CaMKII
CaM
PP1
PP2B
PKA
AC
PKM

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Molecule List for pathway Gq (Pathway Number 316)

 Name Initial Conc. (uM) Volume (fL) Buffered
1Blocked-rec-Gq01.5No
2G-GDP11.5No
    From M&L, total Gprot = 1e5molecules/cell At equil, 92340 are here, 400 are in G*GTP, and another 600 are assoc with the PLC and 6475 are as G*GDP. This is OK. From Pang and Sternweis JBC 265:30 18707-12 1990 we get conc est 1.6 uM to 0.8 uM. A number of other factors are involved too.
3mGluR0.31.5No
    From M&L, Total # of receptors/cell = 1900 Vol of cell = 1e-15 (10 um cube). Navogadro = 6.023e23 so conversion from n to conc in uM is n/vol*nA * 1e3 = 1.66e-6 However, for typical synaptic channels the density is likely to be very high at the synapse. Use an estimate of 0.1 uM for now. this gives a total of about 60K receptors/cell, which is in line with Fay et at.
4mGluRAntag01.5Yes
    I am implementing this as acting only on the Rec-Gq complex, based on a more complete model PLC_Gq48.g which showed that the binding to the rec alone contributed only a small amount.
5Rec-Glu01.5No
    This acts like an enzyme to activate the g proteins Assume cell has vol 1e-15 m^3 (10 uM cube), conversion factor to conc in uM is 6e5
6Rec-Glu-Gq01.5No
7Rec-Gq01.5No
    Fraction of Rec-Gq is 44% of rec, from Fay et al. Since this is not the same receptor, this value is a bit doubtful. Still, we adjust the rate consts in Rec-bind-Gq to match.


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