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Molecule Parameter List for PLC | 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 |
| PLC participated as | Molecule | Sum total of | Enzyme | Substrate of an enzyme | Product of an enzyme | Substrate in Reaction | Product in Reaction | | No. of occurrences | 1 | 0 | 0 | 0 | 0 | 2 | 0 |
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. |
PLC acting as a Molecule in Ajay_Bhalla_2004_PKM_Tuning Network
| Name | Accession Name | Pathway Name | Initial Conc.
(uM) | Volume
(fL) | Buffered | | PLC | Ajay_Bhalla_
2004_PKM_Tuning
Accession No. : 76 | PLCbeta
Pathway No. : 315 | 0.8 | 1.5 | No | | Total PLC = 0.8 uM see Ryu et al JBC 262 (26) pp 12511 1987 |
PLC 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 | | 1 | Act-PLC-Ca | Ajay_Bhalla_
2004_PKM_Tuning
Accession No. : 76 | PLCbeta
Pathway No. : 315 | 3
(uM^-1 s^-1) | 1
(s^-1) | Kd(bf) = 0.3333(uM) | - | Substrate
Ca
PLC
Product
PLC-Ca
| | | Affinity for Ca = 1uM without AlF, 0.1 with: from Smrcka et al science 251 pp 804-807 1991 so [Ca].kf = kb so kb/kf = 1 * 6e5 = 1/1.66e-6 11 June 1996: Raised affinity to 5e-6 to maintain balance. See notes. | | 2 | PLC-bind-Gq | Ajay_Bhalla_
2004_PKM_Tuning
Accession No. : 76 | PLCbeta
Pathway No. : 315 | 2.52
(uM^-1 s^-1) | 1
(s^-1) | Kd(bf) = 0.3968(uM) | - | Substrate
G*GTP
PLC
Product
PLC-Gq
| | | this binding does not produce active PLC. This step was needed to implement the described (Smrcka et al) increase in affinity for Ca by PLC once Gq was bound. The kinetics are the same as the binding step for Ca-PLC to Gq. June 1996: Changed the kf to 4.2e-5 to 4.2e-6 to preserve balance around the reactions. |
| Database compilation and code copyright (C) 2022, Upinder S. Bhalla and NCBS/TIFR
This Copyright is applied to ensure that the contents of this database remain freely available. Please see FAQ for details. |
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