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Molecule Parameter List for R2C2-cAMP

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
R2C2-cAMP participated asMoleculeSum total ofEnzymeSubstrate of an enzymeProduct of an enzymeSubstrate in ReactionProduct in Reaction
No. of occurrences1000011

Accession and Pathway Details
Accession NameAccession No.Accession TypePathway Link
fig3_CaMKII2Network
Shared_Object_fig3_CaMKII CaMKII CaM 
PP1 PP2B PKA 
AC 
This is the model file for figure 3 from Bhalla US and Iyengar R. Science (1999) 283(5400):381-7. It is a model of the Ca activation of CaMKII and other CaM-activated enzymes. It includes the regulatory phosphatases PP1 and PP2B (Calcineurin) acting on CaMKII and also includes CaM-activated adenylyl cyclase and PKA in the synapse.
Demonstration script files for generating the figures in the paper, including figure 3, are available here.

R2C2-cAMP acting as a Molecule in  
fig3_CaMKII Network
NameAccession NamePathway NameInitial Conc.
(uM)
Volume
(fL)
Buffered
R2C2-cAMPfig3_CaMKII
Accession No. : 2
PKA
Pathway No. : 17
01000No
R2C2 complex consisting of 2 catalytic (C) subunits, and the R-dimer with one molecule of cAMP bound to site B1 on the regulatory subunit.

R2C2-cAMP acting as a Substrate in a reaction in  
fig3_CaMKII 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
  • cAMP-bind-site-B
    2
  • fig3_CaMKII
    Accession No. : 2
    PKA
    Pathway No. : 17
    54
    (uM^-1 s^-1)
    33
    (s^-1)
    Kd(bf) = 0.6111(uM)-Substrate
    R2C2-cAMP
    cAMP

    Product
    R2C2-cAMP2
    Kf = 54 /sec/uM, Kb = 33 /sec; Same Km (1e-07M) assumed as site B1.
    kf/kb = 0.7e-07M*1e06/(6e05^02) = 2e-13:2.77e-12

    R2C2-cAMP acting as a Product in a reaction in  
    fig3_CaMKII 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
  • cAMP-bind-site-B
    1
  • fig3_CaMKII
    Accession No. : 2
    PKA
    Pathway No. : 17
    54
    (uM^-1 s^-1)
    33
    (s^-1)
    Kd(bf) = 0.6111(uM)-Substrate
    R2C2
    cAMP

    Product
    R2C2-cAMP
    Kf = 54 /sec/uM, Kb = 33 /sec; PKA in normal human T lymphocytes. Hasler et al (1992) FASEB J 6:2735-2741
    Kd =1e-07 M for type II, 5.6e-08 M for type I; Stephen B. Smith et al (1981) PNAS, USA 78: 1591-1595
    Ka1 = 2.1e+07 /M which gives Kd = 47 nM, Kan = 5e+08 /M or Kd of 2nM from Fig.7



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