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Molecule Parameter List for Ca

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 participated asMoleculeSum total ofEnzymeSubstrate of an enzymeProduct of an enzymeSubstrate in ReactionProduct in Reaction
No. of occurrences1000030

Accession and Pathway Details
Accession NameAccession No.Accession TypePathway Link
3d_fold_model8Network
Shared_Object_3d_fold_model,  PKC,  MAPK,  
PLA2,  Ras 
This model is an annotated version of the synaptic signaling network.
The primary reference is Bhalla US and Iyengar R. Science (1999) 283(5400):381-7 but several of the model pathways have been updated Bhalla US, Ram PT, Iyengar R. Science. 2002 Aug 9;297(5583):1018-23.

Ca acting as a Molecule in  3d_fold_model Network
NameAccession NamePathway NameInitial Conc.
(uM)		Volume
(fL)		Buffered
Ca3d_fold_model
Accession No. : 8
  • Shared_Object_
    3d_fold_model
    Pathway No. : 54
    		• 0.081000Yes

    Ca acting as a Substrate in a reaction in      3d_fold_model 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.
     NameAccession NamePathway NameKfKbKdtauReagents
    1PKC-act-by-Ca3d_fold_model
    Accession No. : 8    		PKC
    Pathway No. : 55    		0.6
    (uM^-1 s^-1)    		0.5
    (s^-1)    		Kd(bf) = 0.8333(uM)-Substrate
    Ca
    PKC-cytosolic

    Product
    PKC-Ca
      Need est of rate of assoc of Ca and PKC. Assume it is fast The original parameter-searched kf of 439.4 has been scaled by 1/6e8 to account for change of units to n. Kf now 8.16e-7, kb=.6085 Raised kf to 1e-6 to match Ca curve, kb to .5
    2PLA2-Ca-act3d_fold_model
    Accession No. : 8    		PLA2
    Pathway No. : 57    		1
    (uM^-1 s^-1)    		0.1
    (s^-1)    		Kd(bf) = 0.1(uM)-Substrate
    Ca
    PLA2-cytosolic

    Product
    PLA2-Ca*
      Leslie and Channon BBA 1045 (1990) 261-270 fig6 pp267.
    3PLA2*-Ca-act3d_fold_model
    Accession No. : 8    		PLA2
    Pathway No. : 57    		6
    (uM^-1 s^-1)    		0.1
    (s^-1)    		Kd(bf) = 0.0167(uM)-Substrate
    Ca
    PLA2*

    Product
    PLA2*-Ca
      To start off, same kinetics as the PLA2-Ca-act direct pathway. Oops ! Missed out the Ca input to this pathway first time round. Let's raise the forward rate about 3x to 5e-6. This will let us reduce the rather high rates we have used for the kenz on PLA2*-Ca. In fact, it may be that the rates are not that different, just that this pathway for getting the PLA2 to the memb is more efficien....


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