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Molecule Parameter List for IP3

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
IP3 participated asMoleculeSum total ofEnzymeSubstrate of an enzymeProduct of an enzymeSubstrate in ReactionProduct in Reaction
No. of occurrences1000420

Accession and Pathway Details
Accession NameAccession No.Accession TypePathway Link
fig2_egfr1Network
Shared_Object_fig2_egfr PKC PLA2 
PLCbeta Gq MAPK 
Ras EGFR Sos 
PLC_g CaRegulation 
This network was used to generate figure 2 in Bhalla US and Iyengar R. Science (1999) 283(5400):381-7. It consists of the MAPK cascade in a feedback loop with PKC, and receives input from the EGFR in the synapse.
Demonstration script files for generating the figures in the paper, including figure 2, are available here.

IP3 acting as a Molecule in  
fig2_egfr Network
NameAccession NamePathway NameInitial Conc.
(uM)
Volume
(fL)
Buffered
IP3fig2_egfr
Accession No. : 1
  • Shared_Object_
    fig2_egfr

    Pathway No. : 1
  • 01000No

    IP3 acting as a Product of an Enzyme in  
    fig2_egfr Network
     Enzyme Molecule /
    Enzyme Activity
    Accession NamePathway NameKm (uM)kcat (s^-1)RatioEnzyme TypeReagents
    1PLC-Ca  /
    PLC-Ca
    fig2_egfr
    Accession No. : 1
    PLCbeta
    Pathway No. : 4
    19.8413104explicit E-S complexSubstrate
    PIP2

    Product
    DAG
    IP3
    2PLC-Ca-Gq  /
    PLCb-Ca-Gq
    fig2_egfr
    Accession No. : 1
    PLCbeta
    Pathway No. : 4
    5484explicit E-S complexSubstrate
    PIP2

    Product
    DAG
    IP3
    3Ca.PLC_g  /
    PIP2_hydrolysis
    fig2_egfr
    Accession No. : 1
    PLC_g
    Pathway No. : 10
    97.2222144Classical Michaelis-Menten
    V = Etot.S.Kcat/Km+S
    Substrate
    PIP2

    Product
    DAG
    IP3
    4Ca.PLC_g*  /
    PIP2_hydrolysis
    fig2_egfr
    Accession No. : 1
    PLC_g
    Pathway No. : 10
    19.7917574Classical Michaelis-Menten
    V = Etot.S.Kcat/Km+S
    Substrate
    PIP2

    Product
    DAG
    IP3

    IP3 acting as a Substrate in a reaction in  
    fig2_egfr 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
    1Degrade-IP3fig2_egfr
    Accession No. : 1
    PLCbeta
    Pathway No. : 4
    2.5
    (s^-1)
    0
    (s^-1)
    --Substrate
    IP3

    Product
    Inositol
    2IP3Rbindfig2_egfr
    Accession No. : 1
    CaRegulation
    Pathway No. : 11
    0.0022
    (uM^-3 s^-1)
    1
    (s^-1)
    Kd(af) = 7.736(uM)-Substrate
    IP3
    IP3
    IP3
    IP3R

    Product
    IP3R*



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