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Molecule Parameter List for CaM-Ca4

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-Ca4 participated asMoleculeSum total ofEnzymeSubstrate of an enzymeProduct of an enzymeSubstrate in ReactionProduct in Reaction
No. of occurrences1000010

Accession and Pathway Details
Accession NameAccession No.Accession TypePathway Link
  • NOS_Phosph_
    regulation
  • 20Pathway
    NOS 
    This model features the phosphorylation of rat brain neuronal NOS expressed in E. coli or Sf9 cells, which leads to a decrease in Vmax of the phosphorylated enzyme, with little change of both the Km for L-arginine and Kact for CaM. This is based on Hayashi Y. et al. J Biol Chem. (1999) 274(29):20597-602. They report of phosphorylatin being carried out by CaM kinases I alpha, II alpha and IV. The rates used have been obtained from their paper and from other reported experimental data.

    CaM-Ca4 acting as a Molecule in  
    NOS_Phosph_regulation Network
    NameAccession NamePathway NameInitial Conc.
    (uM)
    Volume
    (fL)
    Buffered
    CaM-Ca4
  • NOS_Phosph_
    regulation

    Accession No. : 20
  • NOS
    Pathway No. : 90
    200.0016667Yes

    CaM-Ca4 acting as a Substrate in a reaction in  
    NOS_Phosph_regulation 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
    Ca-CaMbind_nNOS
  • NOS_Phosph_
    regulation

    Accession No. : 20
  • NOS
    Pathway No. : 90
    3.25
    (uM^-1 s^-1)
    0.05
    (s^-1)
    Kd(bf) = 0.0154(uM)-Substrate
    CaM-Ca4
    nNOS

    Product
    Ca-CaMnNOS
    Those binding CaM have a high Kd, including nNOS, ~<=10nM. The binding of CaM to nNOS has been demonstrated to act as the trigger necessary for electron transfer and catalytic activity. (Marletta, Biochemistry, 1997;36:12337-12345).



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