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Molecule Parameter List for Ca-ext | 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 |
| Ca-ext 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 | 1 | 0 | 0 |
Accession and Pathway Details | |
| Accession Name | Accession No. | Accession Type | Pathway Link | NonOsc_Ca_
IP3metabolism | 23 | 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. The calcium response is non-oscillatory. Mishra J, Bhalla US. Biophys J. 2002 Sep;83(3):1298-316. |
Ca-ext acting as a Molecule in NonOsc_Ca_IP3metabolism Network
| Name | Accession Name | Pathway Name | Initial Conc.
(uM) | Volume
(fL) | Buffered | | Ca-ext | NonOsc_Ca_
IP3metabolism
Accession No. : 23 | CaRegulation
Pathway No. : 110 | 4000 | 100000 | Yes | | Extracell Ca conc = 4 mM Extracell vol assumed 100 X cell vol. It is anyway kept buffered for the purposes of the model, so the concentration won't change. |
Ca-ext 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 | CaEPump /
Ca-pump-out | NonOsc_Ca_
IP3metabolism
Accession No. : 23 | CaRegulation
Pathway No. : 110 | 0.2 | 72 | 4 | explicit E-S complex | Substrate
Ca
Product
Ca-ext
| | From McBurney and Neering, TINS 10(4), 1987, 164-169 1987. We are using the high-affinity pump here. Their numbers exceed M&L so I am reducing the rates by 10X. Need to check. k1 = 3e-3, k2 = 288, k3 = 72, n = 1000. This comes to a Km of 0.2 for Ca, and a Vmax of 72. |
| Database compilation and code copyright (C) 2022, Upinder S. Bhalla and NCBS/TIFR
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