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Molecule Parameter List for Ca.PLCbeta

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
Ca.PLCbeta participated asMoleculeSum total ofEnzymeSubstrate of an enzymeProduct of an enzymeSubstrate in ReactionProduct in Reaction
No. of occurrences1010021

Accession and Pathway Details
Accession NameAccession No.Accession TypePathway Link
PLCbeta113Pathway
PLCbeta 
This is a model of PLCbeta1 in the bovine brain membranes as stimulated by Ca, Gq and PA.
The primary data sources are Irene Litosch Biochemistry (2000) 39(26):7736-43,
Sternweis PC et al. Philos Trans R Soc Lond B Biol Sci. (1992) 336(1276):35-41 and
Smrcka AV et al. Science (1991) 251(4995):804-7.

Ca.PLCbeta acting as a Molecule in  
PLCbeta1 Network
NameAccession NamePathway NameInitial Conc.
(uM)
Volume
(fL)
Buffered
Ca.PLCbetaPLCbeta1
Accession No. : 13
PLCbeta
Pathway No. : 67
00.0016667No
6 Nov 2001 The enzyme activity is observed only when it combines with Ca and becomes Calcium bound form of enzyme complex.All the curves obtained are in the presence of different concentrations of Calcium by I. Litosch, Biochem.,2000, 39,7736-7743.

Ca.PLCbeta acting as an Enzyme in  
PLCbeta1 Network
Enzyme Molecule /
Enzyme Activity
Accession NamePathway NameKm (uM)kcat (s^-1)RatioEnzyme TypeReagents
Ca.PLCbeta /
Ca.PLCbeta
PLCbeta1
Accession No. : 13
PLCbeta
Pathway No. : 67
1074Classical Michaelis-Menten
V = Etot.S.Kcat/Km+S
Substrate
PIP2

Product
DAG
IP3
3 Nov 2001 Sternweis et al Phil Trans Soc R Lond B Biol Sci 1992 Apr 29; 336(1276);35-41;discussion 41-2. The Km and Vmax values according to Sternweis et al. The Km is fixed to 10uM since there is absence of Gq and so is the Vmax values which is fixed at 7uM since the Km obtained varies between 5 and 20uM and Vmax between 7 and 23umol/min/mg depending on the presence and absence of Gq.

Ca.PLCbeta acting as a Substrate in a reaction in  
PLCbeta1 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
1
  • Gq-bind-Ca.PLCbe
    ta
  • PLCbeta1
    Accession No. : 13
    PLCbeta
    Pathway No. : 67
    50
    (uM^-1 s^-1)
    1
    (s^-1)
    Kd(bf) = 0.02(uM)-Substrate
    Ca.PLCbeta
    Gq

    Product
    Gq.Ca.PLCbeta
      6 Nov 2001 The Kf and Kb values were fixed according to the response curves obtained from I. Litosch, Biochem., 2000, 39, 7736-7743.
    2
  • PA-bind-Ca.PLCbe
    ta
  • PLCbeta1
    Accession No. : 13
    PLCbeta
    Pathway No. : 67
    1
    (uM^-1 s^-1)
    8
    (s^-1)
    Kd(bf) = 8(uM)-Substrate
    Ca.PLCbeta
    PA

    Product
    PA.Ca.PLCbeta
      6 Nov 2001 The Kf and Kb values were fixed according to the dose response curves obtained from I. Litosch, Biochem., 2000, 39, 7736-7743.

    Ca.PLCbeta acting as a Product in a reaction in  
    PLCbeta1 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_bind_PLCbetaPLCbeta1
    Accession No. : 13
    PLCbeta
    Pathway No. : 67
    1
    (uM^-1 s^-1)
    1
    (s^-1)
    Kd(bf) = 1(uM)-Substrate
    Ca
    PLCbeta

    Product
    Ca.PLCbeta
    6 Nov 2001 The Kf and Kb values were fixed according to the dose response curves obtained from I.Litosch, Biochem., 2000, 39, 7736-7743.



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