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Molecule Parameter List for PLA2*-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
PLA2*-Ca participated asMoleculeSum total ofEnzymeSubstrate of an enzymeProduct of an enzymeSubstrate in ReactionProduct in Reaction
No. of occurrences1010001

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.

PLA2*-Ca acting as a Molecule in  
3d_fold_model Network
NameAccession NamePathway NameInitial Conc.
(uM)
Volume
(fL)
Buffered
PLA2*-Ca3d_fold_model
Accession No. : 8
PLA2
Pathway No. : 57
01000No
Phosphorylated form of PLA2. Still need to hook it up using kinases. PKA: Wightman et al JBC 257 pp6650 1982 PKC: Many refs, eg Gronich et al JBC 263 pp 16645, 1988 but see Lin etal MAPK: Lin et al, Cell 72 pp 269, 1993. Show 3x with MAPK but not PKC alone Do not know if there is a Ca requirement for active phosphorylated state.

PLA2*-Ca acting as an Enzyme in  
3d_fold_model Network
Enzyme Molecule /
Enzyme Activity
Accession NamePathway NameKm (uM)kcat (s^-1)RatioEnzyme TypeReagents
PLA2*-Ca /
kenz
3d_fold_model
Accession No. : 8
PLA2
Pathway No. : 57
201204explicit E-S complexSubstrate
APC

Product
AA
This form should be 3 to 6 times as fast as the Ca-only form. I have scaled by 4x which seems to give a 5x rise. 10x raise Oct 22 12 x oct 24, changed k2 = 4 * k3

PLA2*-Ca acting as a Product 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
PLA2*-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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