NCBS Home page
Accession List
Pathway List
Search
Authorized Users
Help
News archives

Enter a Search String

Special character and space not allowed in the query term. Search string should be at least 2 characters long.
Search in: Search for Match By

Molecule Parameter List for R2C2-cAMP4

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-cAMP4 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
fig4_synapse3Network
Shared_Object_fig4_synapse PKC PLA2 
PLCbeta Gq MAPK 
Ras CaMKII CaM 
PP1 PP2B PKA 
AC 
This is the composite model of 4 kinases: PKC, MAPK, PKA and CaMKII and numerous regulatory pathways involved in synaptic signaling. From Bhalla US and Iyengar R. Science (1999) 283(5400):381-7.This model comes from figure 4 of that paper.
Demonstration script files for generating the figures in the paper, including figure 4, are available here.

R2C2-cAMP4 acting as a Molecule in  
fig4_synapse Network
NameAccession NamePathway NameInitial Conc.
(uM)
Volume
(fL)
Buffered
R2C2-cAMP4fig4_synapse
Accession No. : 3
PKA
Pathway No. : 30
01000No
R2C2 complex consisting of 2 catalytic (C) subunits, and the R-dimer with 4 cAMP molecules bound to it. All the regulatory subunits now have cAMP bound. This state is ready to dissociate and to release the catalytic subunit.

R2C2-cAMP4 acting as a Substrate in a reaction in  
fig4_synapse 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
Release-C1fig4_synapse
Accession No. : 3
PKA
Pathway No. : 30
60
(s^-1)
18
(uM^-1 s^-1)
Kd(cb) = 0.3(uM)-Substrate
R2C2-cAMP4

Product
PKA-active
R2C-cAMP4
The complex starts to dissociate and release catalytic subunit C. This has to be fast, as the activation of PKA by cAMP is also fast.

R2C2-cAMP4 acting as a Product in a reaction in  
fig4_synapse 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-A
    2
  • fig4_synapse
    Accession No. : 3
    PKA
    Pathway No. : 30
    75
    (uM^-1 s^-1)
    32.5
    (s^-1)
    Kd(bf) = 0.4333(uM)-Substrate
    R2C2-cAMP3
    cAMP

    Product
    R2C2-cAMP4
    Now cAMP shows effects of cooperativity and PKA has a low Kd for cAMP.



    Database compilation and code copyright (C) 2022, Upinder S. Bhalla and NCBS/TIFR
    This Copyright is applied to ensure that the contents of this database remain freely available. Please see FAQ for details.