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Molecule Parameter List for CaEPump

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
CaEPump participated asMoleculeSum total ofEnzymeSubstrate of an enzymeProduct of an enzymeSubstrate in ReactionProduct in Reaction
No. of occurrences1010000

Accession and Pathway Details
Accession NameAccession No.Accession TypePathway Link
  • NonOsc_Ca_
    IP3metabolism
  • 23Network
    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.

    CaEPump acting as a Molecule in  
    NonOsc_Ca_IP3metabolism Network
    NameAccession NamePathway NameInitial Conc.
    (uM)
    Volume
    (fL)
    Buffered
    CaEPump
  • NonOsc_Ca_
    IP3metabolism

    Accession No. : 23
  • CaRegulation
    Pathway No. : 110
    0.0051000No
    The calcium electrogenic pump: Mc Burney and Neering, TINS 10(4), 1987, 164-169. We treat the pump as a simple Michaelis-Menten enzyme. Levels are constrained tightly by the need to keep resting Ca levels at 80 nM.

    CaEPump acting as an Enzyme in  
    NonOsc_Ca_IP3metabolism Network
    Enzyme Molecule /
    Enzyme Activity
    Accession NamePathway NameKm (uM)kcat (s^-1)RatioEnzyme TypeReagents
    CaEPump /
    Ca-pump-out
  • NonOsc_Ca_
    IP3metabolism

    Accession No. : 23
  • CaRegulation
    Pathway No. : 110
    0.2724explicit E-S complexSubstrate
    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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