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Molecule Parameter List for IP2(14) | 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. |
IP2(14) acting as a Molecule in NonOsc_Ca_IP3metabolism Network
Name | Accession Name | Pathway Name | Initial Conc. (uM) | Volume (fL) | Buffered | IP2(14) | NonOsc_Ca_ IP3metabolism Accession No. : 31 | 145_dephos Pathway No. : 153 | 0 | 1000 | No | Inositol(1,4) bisphosphate |
IP2(14) acting as a Substrate for 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_1pase / ip2_1pase | NonOsc_Ca_ IP3metabolism Accession No. : 31 | 145_dephos Pathway No. : 153 | 5.00005 | 2 | 4 | explicit E-S complex | Substrate IP2(14)
Product IP1(4)
| from Inhorn and Majerus, JBC 1987 Vmax reduced from 5.625 to 2 to maintain levels of IP2(14) |
IP2(14) 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 | 1 | IP3_5pase2 / ip3_5pase2 | NonOsc_Ca_ IP3metabolism Accession No. : 31 | 145_dephos Pathway No. : 153 | 18.0004 | 10.667 | 3.99991 | explicit E-S complex | Substrate IP3(145)
Product IP2(14)
| | from Hansen et al, JBC 262, 1987 activity determined from pH curve. Value scaled 1.5 times to obtain activity at 37C as original experiment was performed at 30C | 2 | IP_5pase1 / ip3_5pase1 | NonOsc_Ca_ IP3metabolism Accession No. : 31 | 145_dephos Pathway No. : 153 | 3.00001 | 1.1 | 4 | explicit E-S complex | Substrate IP3(145)
Product IP2(14)
| | Ins(145)P3 5-phosphatase activity of InsP-5-phosphatase from Hansen et al, JBC 262; 1987 |
| 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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