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Molecule Parameter List for CaM-Ca3

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
CaM-Ca3 participated asMoleculeSum total ofEnzymeSubstrate of an enzymeProduct of an enzymeSubstrate in ReactionProduct in Reaction
No. of occurrences1000021

Accession and Pathway Details
Accession NameAccession No.Accession TypePathway Link
  • Synaptic_
    Network
  • 16Network
    Shared_Object_Synaptic_Network PKC PLA2 
    PLCbeta Gq MAPK 
    Ras EGFR Sos 
    PLC_g CaMKII CaM 
    PP1 PP2B PKA 
    AC CaRegulation 
    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 Biophys J. 2002 Aug;83(2):740-52
    Bhalla US J Comput Neurosci. 2002 Jul-Aug;13(1):49-62

    CaM-Ca3 acting as a Molecule in  
    Synaptic_Network Network
    NameAccession NamePathway NameInitial Conc.
    (uM)
    Volume
    (fL)
    Buffered
    CaM-Ca3
  • Synaptic_
    Network

    Accession No. : 16
  • Shared_Object_
    Synaptic_
    Network

    Pathway No. : 70
  • 01000No
    The TR1 end now begins to bind Ca. This form has 2 Ca's on the TR2 end, and one on the TR1.

    CaM-Ca3 acting as a Substrate in a reaction in  
    Synaptic_Network 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
    1CaM-Ca3-bind-Ca
  • Synaptic_
    Network

    Accession No. : 16
  • CaM
    Pathway No. : 81
    0.465
    (uM^-1 s^-1)
    10
    (s^-1)
    Kd(bf) = 21.5054(uM)-Substrate
    Ca
    CaM-Ca3

    Product
    CaM-Ca4
      Use K3 = 21.5 uM here from Stemmer and Klee table 3. Stemmer and Klee 1994 Biochem 33:6859-6866 kb/kf =21.5 * 6e5 so kf = 7.75e-7, kb = 10
    2
  • CaMCa3-bind-CaNA
    B
  • Synaptic_
    Network

    Accession No. : 16
  • PP2B
    Pathway No. : 83
    2.238
    (uM^-1 s^-1)
    1
    (s^-1)
    Kd(bf) = 0.4468(uM)-Substrate
    CaM-Ca3
    CaNAB-Ca4

    Product
    CaMCa3-CaNAB
      Rates derived from the CaMCa4 binding to CaNAB-Ca4 step. Due to detailed balance calculations taking the Ca affinity for CaM into account, this reaction should be 250 times slower. Close.

    CaM-Ca3 acting as a Product in a reaction in  
    Synaptic_Network 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
  • CaM-TR2-Ca2-bind
    -Ca
  • Synaptic_
    Network

    Accession No. : 16
  • CaM
    Pathway No. : 81
    3.6
    (uM^-1 s^-1)
    10
    (s^-1)
    Kd(bf) = 2.7778(uM)-Substrate
    Ca
    CaM-TR2-Ca2

    Product
    CaM-Ca3
    Stemmer and Klee 1994 Biochem 33:6859-6866 K3 = 21.5, K4 = 2.8. Assuming that the K4 step happens first, we get kb/kf = 2.8 uM = 1.68e6 so kf =6e-6 assuming kb = 10



    Database compilation and code copyright (C) 2022, Upinder S. Bhalla and NCBS/TIFR
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