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Molecule Parameter List for TaWA

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
TaWA participated asMoleculeSum total ofEnzymeSubstrate of an enzymeProduct of an enzymeSubstrate in ReactionProduct in Reaction
No. of occurrences1000013

Accession and Pathway Details
Accession NameAccession No.Accession TypePathway Link
Chemotaxis55Pathway
Chemotaxis 
All parameters used are from the .BCT files for BCT1.1 provided by Matthew Levin from the Computational Biology Group in the Department of Zoology at the University of Cambridge.Bias does not reach 0.7, there is a lag in the response of bias to the 5 sec 1 uM Aspartate pulse as shown by Bray et al. Mol.Biol.Cell (1993) 4(5): 469-482. The June 2003 version of the BCT program is BCT4.3 and is available at the computational biology site of the Zoology department at Cambridge University.

TaWA acting as a Molecule in  
Chemotaxis Network
NameAccession NamePathway NameInitial Conc.
(uM)
Volume
(fL)
Buffered
TaWAChemotaxis
Accession No. : 55
Chemotaxis
Pathway No. : 226
01.41No
Tar-CheW-CheA-Aspartate complex TaWA = 0 M As per Signal 14 in 1SIG_B.BCT provided by Matthew Levin Cell volume = 1.41e-15 L Bray et al 1993, Mol.Biol.Cell 4: 469-482 Table 1. pp.474

TaWA acting as a Substrate in a reaction in  
Chemotaxis 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
  • Dephosphorylatio
    n[1]
  • Chemotaxis
    Accession No. : 55
    Chemotaxis
    Pathway No. : 226
    99.9972
    (uM^-1 s^-1)
    0
    (s^-1)
    --Substrate
    CheYp
    TaWA

    Product
    CheY
    MYpYpYp = 4.47e-10 M = 4.47e-4 uM As per Signal 26 in 1SIG_B.BCT provided by Matthew Levin Cell volume = 1.41e-15 L Table 1 pp.474 Bray et al 1993, Mol.Biol.Cell 4: 469-482

    TaWA acting as a Product in a reaction in  
    Chemotaxis 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
    1Binding[6]Chemotaxis
    Accession No. : 55
    Chemotaxis
    Pathway No. : 226
    0.4
    (uM^-1 s^-1)
    1
    (s^-1)
    Kd(bf) = 2.5(uM)-Substrate
    CheA
    TaW

    Product
    TaWA
      Motor = 8.5 molecules per cell As per Enzyme entry 7 in 1ENZ.BCT provided by Matthew Levin Motor = 6.73e-9 M = 6.73e-3 uM As per Signal 23 in 1SIG_B.BCT provided by Matthew Levin Cell volume = 1.41e-15 L Table 1 pp.474 Bray et al 1993, Mol.Biol.Cell 4: 469-482
    2Complexing[9]Chemotaxis
    Accession No. : 55
    Chemotaxis
    Pathway No. : 226
    0.4
    (uM^-1 s^-1)
    1
    (s^-1)
    Kd(bf) = 2.5(uM)-Substrate
    CheW
    TaA

    Product
    TaWA
    3Binding[11]Chemotaxis
    Accession No. : 55
    Chemotaxis
    Pathway No. : 226
    0.4
    (uM^-1 s^-1)
    1
    (s^-1)
    Kd(bf) = 2.5(uM)-Substrate
    TA
    WA

    Product
    TaWA
      Binding of Ta and CheW-CheA complex Kf = 4e+05 /sec/M = 0.4 /sec/uM Kb = 1 /sec Bray et al 1993, Mol.Biol.Cell 4: 469-482 Table 3 pp.476 Reaction Scheme 8 Footnote states that ligands do not have any effect on the the formation of complexes so same rates are used for Aspartate or Ni associated Tar complexes.



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