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Molecule Parameter List for IP1(3) | 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 | NonOsc_Ca_ IP3metabolism | 31 | Network | MIPP, CaMKII, CaM, PKC, IP3-3K, CaRegulation, Gq, PLCbeta, 134_dephos, 145_dephos, IP4-system, IHP-system, 1345_dephos | This network models detailed metabolism of Ins(145)P3, integrated with GPCR mediated PLCbeta activation and Ca release by the InsP3 receptor in the neuron. It is similar to the NonOsc_Ca_IP3metab model (accession 23) except that some enzymes have been modified to have reversible kinetics rather than Michaelis-Menten kinetics. These modified enzymes belong to the groups: IP4-system, IP3-3K, 145_dephos and 134_dephos. Mishra J, Bhalla US. Biophys J. 2002 Sep;83(3):1298-316. |
IP1(3) acting as a Molecule in NonOsc_Ca_IP3metabolism Network
Name | Accession Name | Pathway Name | Initial Conc. (uM) | Volume (fL) | Buffered | IP1(3) | NonOsc_Ca_ IP3metabolism Accession No. : 31 | 134_dephos Pathway No. : 152 | 0 | 1000 | No | Inositol (3)monophosphate = 11% of Ins(1)P1 ~ 4.8uM Ackermann et al, Biochem J 242(2), 1987: 517 |
IP1(3) acting as a Product of an Enzyme in NonOsc_Ca_IP3metabolism Network
Enzyme Molecule / Enzyme Activity | Accession Name | Pathway Name | Km (uM) | kcat (s^-1) | Ratio | Enzyme Type | Reagents | IP_4pase / ip2_4pase | NonOsc_Ca_ IP3metabolism Accession No. : 31 | 134_dephos Pathway No. : 152 | 22.9995 | 55 | 4 | explicit E-S complex | Substrate IP2(34)
Product IP1(3)
| Ins(34)P2 4-phosphatase activity of InsP 4-phosphatase from Norris et al, JBC 269; 1994 |
IP1(3) acting as a Substrate in a reaction in NonOsc_Ca_IP3metabolism 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 | IP1(3)_deg | NonOsc_Ca_ IP3metabolism Accession No. : 31 | 134_dephos Pathway No. : 152 | 35 (s^-1) | 0.336 (s^-1) | Keq = 0.0096(uM) | 0.028sec | Substrate IP1(3)
Product inositol
| Kf and Kb based on levels of Ins(3)P1. Kb necessary as energetics calculations show backflow from inositol to be significant. |
| 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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