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Molecule Parameter List for PP1-active

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
PP1-active participated asMoleculeSum total ofEnzymeSubstrate of an enzymeProduct of an enzymeSubstrate in ReactionProduct in Reaction
No. of occurrences1050011

Accession and Pathway Details
Accession NameAccession No.Accession TypePathway Link
  • Ajay_Bhalla_
    2004_Feedback_
    Tuning
  • 78Network
    Shared_Object_Ajay_Bhalla_2004_Feedback_Tuning PKC PLA2 
    PLCbeta Gq MAPK 
    Ras EGFR Sos 
    PLC_g CaMKII CaM 
    PP1 PP2B PKA 
    AC 
    This model is taken from Ajay SM, Bhalla US. Eur J Neurosci. 2004 Nov;20(10):2671-80. This is the feedback model from Figure 8a.

    PP1-active acting as a Molecule in  
    Ajay_Bhalla_2004_Feedback_Tuning Network
    NameAccession NamePathway NameInitial Conc.
    (uM)
    Volume
    (fL)
    Buffered
    PP1-active
  • Ajay_Bhalla_
    2004_Feedback_
    Tuning

    Accession No. : 78
  • Shared_Object_
    Ajay_Bhalla_
    2004_Feedback_
    Tuning

    Pathway No. : 347
  • 1.81.5No
    Cohen et al Meth Enz 159 390-408 is main source of info conc = 1.8 uM

    PP1-active acting as an Enzyme in  
    Ajay_Bhalla_2004_Feedback_Tuning Network
     Enzyme Molecule /
    Enzyme Activity
    Accession NamePathway NameKm (uM)kcat (s^-1)RatioEnzyme TypeReagents
    1PP1-active /
    Deph-thr286
  • Ajay_Bhalla_
    2004_Feedback_
    Tuning

    Accession No. : 78
  • Shared_Object_
    Ajay_Bhalla_
    2004_Feedback_
    Tuning

    Pathway No. : 347
  • 5.099110.354explicit E-S complexSubstrate
  • CaMKII-thr286*-C
    aM


    Product
    CaMKII-CaM
  •     The rates are from Stralfors et al Eur J Biochem 149 295-303 giving Vmax = 5.7 umol/min giving k3 = 3.5/sec and k2 = 14. Foulkes et al Eur J Biochem 132 309-313 1983 give Km = 5.1 uM so k1 becomes 5.72e-6 Simonelli 1984 (Grad Thesis, CUNY) showed that other substrates are about 1/10 rate of phosphorylase a, so we reduce k1,k2,k3 by 10 to 5.72e-7, 1.4, 0.35
    2PP1-active /
    Deph-thr305
  • Ajay_Bhalla_
    2004_Feedback_
    Tuning

    Accession No. : 78
  • Shared_Object_
    Ajay_Bhalla_
    2004_Feedback_
    Tuning

    Pathway No. : 347
  • 5.099110.354explicit E-S complexSubstrate
    CaMKII***

    Product
    CaMKII-thr286
       
    3PP1-active /
    Deph-thr306
  • Ajay_Bhalla_
    2004_Feedback_
    Tuning

    Accession No. : 78
  • Shared_Object_
    Ajay_Bhalla_
    2004_Feedback_
    Tuning

    Pathway No. : 347
  • 5.099110.354explicit E-S complexSubstrate
    CaMK-thr306

    Product
    CaMKII
        See Cohen et al
    4PP1-active /
    Deph-thr286c
  • Ajay_Bhalla_
    2004_Feedback_
    Tuning

    Accession No. : 78
  • Shared_Object_
    Ajay_Bhalla_
    2004_Feedback_
    Tuning

    Pathway No. : 347
  • 5.099110.354explicit E-S complexSubstrate
    CaMKII***

    Product
    CaMK-thr306
       
    5PP1-active /
    Deph_thr286b
  • Ajay_Bhalla_
    2004_Feedback_
    Tuning

    Accession No. : 78
  • Shared_Object_
    Ajay_Bhalla_
    2004_Feedback_
    Tuning

    Pathway No. : 347
  • 5.099110.354explicit E-S complexSubstrate
    CaMKII-thr286

    Product
    CaMKII
       

    PP1-active acting as a Substrate in a reaction in  
    Ajay_Bhalla_2004_Feedback_Tuning 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
    Inact-PP1
  • Ajay_Bhalla_
    2004_Feedback_
    Tuning

    Accession No. : 78
  • PP1
    Pathway No. : 359
    499.977
    (uM^-1 s^-1)
    0.1
    (s^-1)
    Kd(bf) = 0.0002(uM)-Substrate
    I1*
    PP1-active

    Product
    PP1-I1*
    K inhib = 1nM from Cohen Ann Rev Bioch 1989, 4 nM from Foukes et al Assume 2 nM. kf /kb = 8.333e-4

    PP1-active acting as a Product in a reaction in  
    Ajay_Bhalla_2004_Feedback_Tuning 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
    dissoc-PP1-I1
  • Ajay_Bhalla_
    2004_Feedback_
    Tuning

    Accession No. : 78
  • PP1
    Pathway No. : 359
    1
    (s^-1)
    0
    (uM^-1 s^-1)
    --Substrate
    PP1-I1

    Product
    I1
    PP1-active
    Let us assume that the equil in this case is very far over to the right. This is probably safe.



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