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Molecule Parameter List for PPX

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
PPX participated asMoleculeSum total ofEnzymeSubstrate of an enzymeProduct of an enzymeSubstrate in ReactionProduct in Reaction
No. of occurrences1000022

Accession and Pathway Details
Accession NameAccession No.Accession TypePathway Link
SOCS1_knockout67Pathway
SOCS1_knockout 
This model was taken from the Yamada S et al. FEBS Letters 2003 Jan 16;534(1-3):190-6
This model shows the control mechanism of Jak-Stat pathway, here SOCS1 (Suppressor of cytokine signaling-I) was identified as the negative regulator of Jak and STAT signal transduction pathway. This is the knockout version of Jak-Stat pathway in this model the SOCS1 has been knocked out i.e it formation is not shown.
The graphs are almost similar to the graphs as shown in the paper but STAT1n graph has some ambiguities. Thanks to Dr Satoshi Yamada for clarifying some of those ambiguities and providing the values used in the simulations.

PPX acting as a Molecule in  
SOCS1_knockout Network
NameAccession NamePathway NameInitial Conc.
(uM)
Volume
(fL)
Buffered
PPXSOCS1_knockout
Accession No. : 67
SOCS1_knockout
Pathway No. : 294
0.050.0016667No
PPX: Unidentified phosphatase in the cytoplasm PPX = 50nM = 0.05uM Appendix, Satoshi Yamada et al 2003 FEBS Letters 534:190-196

PPX acting as a Substrate in a reaction in  
SOCS1_knockout 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
1PPX_binding[2]SOCS1_knockout
Accession No. : 67
SOCS1_knockout
Pathway No. : 294
1
(uM^-1 s^-1)
0.2
(s^-1)
Kd(bf) = 0.2(uM)-Substrate
PPX
STAT1c*-STAT1c*

Product
  • PPX-STAT1c*-STAT
    1c*

  •   Binding of PPX to phosphorylated STAT1c dimer Kf = 1*10e+06 /M/sec = 1/uM/sec Kb = 0.2 /sec Appendix, Satoshi Yamada et al 2003 FEBS Letters 534:190-196
    2PPX_binding[1]SOCS1_knockout
    Accession No. : 67
    SOCS1_knockout
    Pathway No. : 294
    1
    (uM^-1 s^-1)
    0.2
    (s^-1)
    Kd(bf) = 0.2(uM)-Substrate
    PPX
    STAT1c*

    Product
    PPX-STAT1c*
      Binding of PPX to phosphorylated STAT1c Kf = 1*10e+06 /M/sec = 1/sec/uM Kb = 0.2 /sec Appendix, Satoshi Yamada et al 2003 FEBS Letters 534:190-196

    PPX acting as a Product in a reaction in  
    SOCS1_knockout 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
  • STAT1c*_
    dephosphorylatio
    n
  • SOCS1_knockout
    Accession No. : 67
    SOCS1_knockout
    Pathway No. : 294
    0.003
    (s^-1)
    0
    (uM^-1 s^-1)
    --Substrate
    PPX-STAT1c*

    Product
    PPX
    STAT1c
      Cytoplasmic phosphatase (PPX) dephosphorylates STAT1c Kf = 0.003/sec Kb = 0/sec/uM Appendix, Satoshi Yamada et al 2003 FEBS Letters 534:190-196
    2
  • STAT1c*_
    dephosphorylatio
    n[1]
  • SOCS1_knockout
    Accession No. : 67
    SOCS1_knockout
    Pathway No. : 294
    0.003
    (s^-1)
    0
    (uM^-2 s^-1)
    --Substrate
  • PPX-STAT1c*-STAT
    1c*


    Product
    PPX
    STAT1c
    STAT1c*
  •   Cytoplasmic phosphatase (PPX) dephosphorylates STAT1c dimer Kf = 0.003 Kb = 0 Appendix, Satoshi Yamada et al 2003 FEBS Letters 534:190-196



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