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Chemotaxis
Chemotaxis
 Molecule
 Reaction

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Reaction List for pathway Chemotaxis (Pathway Number 228)

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 reactions is not considered.
  Name KfKbKdtauSubstrateProduct
1 Autodephosphoryl
ation
kf
(s^-1)
0
(s^-1)
--CheBp
CheB
  Autodephosphorylation of CheBp Kf = 1 /sec Kb = 0 /sec Bray et al 1993, Mol.Biol.Cell 4: 469-482 Table 2 pp.475 Reaction Scheme 10
2 Autodephosphoryl
ation[1]
kf
(s^-1)
0
(s^-1)
--CheYp
CheY
  Autodephosphorylation of CheYp Kf = 3.7*10e-02 /sec Kb = 0 /sec Bray et al 1993, Mol.Biol.Cell 4: 469-482 Table 2 pp.475 Reaction Scheme 7
3 Autophosphorylat
ion
kf
(s^-1)
0
(s^-1)
--CheA
CheAp
  Autophosphorylation of CheA by ATP Kf = 0.001 /sec Kb = 0 /sec Bray et al 1993, Mol.Biol.Cell 4: 469-482 Table 2 pp.475 Reaction Scheme 1
4 Autophosphorylat
ion[1]
kf
(uM^-1 s^-1)
0
(s^-1)
--TWA
CheA
CheAp
  TWA stimulated autophosphorylation of CheA TWA is complex of Tar, CheW and CheA Kf = 7.57*10e+04 /sec/M = 0.0757 /sec/uM As per Reaction 9 in 1REACT.BCT provided by Matthew Levin Kf = 5.9*10e+4 /sec/M = 0.059 /sec/uM Kb = 0 /sec Bray et al 1993, Mol.Biol.Cell 4: 469-482 Table 2 pp.475 Reaction Scheme 2
5 Autophosphorylat
ion[2]
kf
()
0
(s^-1)
--        -CheYp
  Autophosphorylation of CheY Paper says reaction not applicable Table 2 pp.475 Reaction Scheme 6 kf = 0/sec kb = 0/sec As per Reaction 14 in 1REACT.BCT provided by Matthew Levin Bray et al 1993, Mol.Biol.Cell 4: 469-482
6 Autophosphorylat
ion[3]
kf
(uM^-1 s^-1)
0
(s^-1)
--TnWA
CheA
CheAp
  TnWA stimulated autophosphorylation of CheA TnWA is complex of Tar, CheW, CheA and Ni Kf = 1*10e+06 /sec/M = 1 /sec/uM Kb = 0 /sec As per Reaction 10 in 1REACT.BCT provided by Matthew Levin Bray et al 1993, Mol.Biol.Cell 4: 469-482 Table 2 pp.475, Reaction scheme 3
7 Bindingkf
(uM^-1 s^-1)
1
(s^-1)
Kd(bf) = 1000.028(uM)-Ni
Tar
Tn
  Binding of Tar and Ni Kf = 1 * 10e+03 /sec/M = 0.001 /sec/uM Kb = 1 /sec Bray et al 1993, Mol.Biol.Cell 4: 469-482 Table 3 pp.476 Reaction Scheme 2
8 Binding[10]kf
(uM^-1 s^-1)
10
(s^-1)
Kd(bf) = 2.5(uM)-Tn
WA
TnWA
  Binding of Tn 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 Rates used here are 10 times that stated, to allow for faster time courses seen during the drop of bias on removal of stimulus. Footnote states that ligands do not have any effect on the formation of complexes so same rates are used for Aspartate or Ni associated Tar complexes.
9 Binding[11]kf
(uM^-1 s^-1)
10
(s^-1)
Kd(bf) = 2.5(uM)-TA
WA
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 Rates used here are 10 times that stated, to allow for faster time courses seen during the drop of bias on removal of stimulus. 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.
10 Binding[1]kf
(uM^-1 s^-1)
10
(s^-1)
Kd(bf) = 0.7813(uM)-Aspartate
Tar
TA
  Binding of Aspartate with Tar Kd = 0.78 uM Dunten and Koshland, 1991 Kf = 1.28e+06 /sec/M = 1.28 /sec/uM here scaled by 5 As per Reaction 0 in 1REACT.BCT provided by Matthew Levin Kf = 1.0e+06 /sec/M = 1 /sec/uM; Kb = 1 /sec Bray et al 1993, Mol.Biol.Cell 4: 469-482 Table 3 pp.476 Reaction Scheme 1
11 Binding[2]kf
(uM^-1 s^-1)
10
(s^-1)
Kd(bf) = 2.5(uM)-TW
CheA
TWA
  Binding of TW and CheA Kd = 0.3 uM and therefore Kf also suggested as 0.3 /sec/uM Kf = 4*10e5 /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 6 Rates used here are 10 times that stated, to allow for faster time courses seen during the drop of bias on removal of stimulus.
12 Binding[3]kf
(uM^-1 s^-1)
1
(s^-1)
Kd(bf) = 19.9999(uM)-Tar
CheA
TA
  Binding of T and CheA Kf = 0.05 /sec/uM as per Reaction 3 in 1REACT.BCT Kf = 1*10e+04 /sec/M = 0.01 /sec/uM Kb = 1 /sec Bray et al 1993, Mol.Biol.Cell 4: 469-482 Table 3 pp.476 Reaction Scheme 4
13 Binding[4]kf
(uM^-1 s^-1)
1
(s^-1)
Kd(bf) = 19.9999(uM)-Tn
CheA
TnA
  Binding of T-Ni and CheA Kf = 0.05 /sec/uM as per Reaction 3 in 1REACT.BCT Kf = 1*10e+04 /sec/M = 0.01 /sec/uM Kb = 1 /sec Bray et al 1993, Mol.Biol.Cell 4: 469-482 Table 3 pp.476 Reaction Scheme 4 Footnote states that ligands do not have any effect on the formation of complexes so same rates are used for Aspartate or Ni associated Tar complexes.
14 Binding[5]kf
(uM^-1 s^-1)
10
(s^-1)
Kd(bf) = 2.5(uM)-TnW
CheA
TnWA
  Binding of TnW and CheA Kf = 4*10e+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 6 Footnote states that ligands do not have any effect on the formation of complexes so same rates are used for Aspartate or Ni associated tar complexes.
15 Binding[6]kf
(uM^-1 s^-1)
10
(s^-1)
Kd(bf) = 2.5(uM)-TaW
CheA
TaWA
  Binding of TaW and CheA Kf = 4*10e+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 6 Rates used here are 10 times that stated, to allow for faster time courses seen during the drop of bias on removal of stimulus. Footnote states that ligands do not have any effect on the formation of the Tar-CheW-CheA complex so same rates are used for Aspartate or Ni associated Tar complexes.
16 Binding[7]kf
(uM^-1 s^-1)
1
(s^-1)
Kd(bf) = 19.9999(uM)-TA
CheA
TaA
  Binding of Tar-Aspartate and CheA Kf = 0.05 /sec/uM as per Reaction 3 in 1REACT.BCT Kf = 1e+04 /sec/M = 0.01 /sec/uM Kb = 1 /sec Bray et al 1993, Mol.Biol.Cell 4: 469-482 Table 3 pp.476 Reaction Scheme 4 Footnote states that ligands do not have any effect on the formation of complexes so same rates are used for Aspartate or Ni associated Tar complexes.
17 Binding[9]kf
(uM^-1 s^-1)
10
(s^-1)
Kd(bf) = 2.5(uM)-WA
Tar
TWA
  Binding of Tar and CheW-CheA complex Kd = 2 uM and therefore Kf also suggested as 0.5 /sec/uM 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 Rates used here are 10 times that stated, to allow for faster time courses seen during the drop of bias on removal of stimulus.
18 Complexingkf
(uM^-1 s^-1)
1
(s^-1)
Kd(bf) = 10.0003(uM)-CheW
Tar
TW
  Tar and CheW complex formation Kf = 1 * 10e5 /sec/M = 0.1 /sec/uM Kb = 1 /sec Bray et al 1993, Mol.Biol.Cell 4: 469-482 Table 3 pp.476 Reaction Scheme 3
19 Complexing[10]kf
(uM^-1 s^-1)
1
(s^-1)
Kd(bf) = 19.9999(uM)-CheW
CheA
WA
  CheA and CheW complex formation Kf = 5*10e+04 /sec/M = 0.05 /sec/uM As per Reaction 4 in 1REACT.BCT provided by Matthew Levin Kf = 0.01 /sec/uM Kb = 1 /sec Bray et al 1993, Mol.Biol.Cell 4: 469-482 Table 3 pp.476 Reaction Scheme 5
20 Complexing[1]kf
(uM^-1 s^-1)
1
(s^-1)
Kd(bf) = 10.0003(uM)-Tn
CheW
TnW
  Complex formation of Ni bound Tar and CheW Kf = 1 * 10e5 /sec/M = 0.1 /sec/uM Kb = 1 /sec Bray et al 1993, Mol.Biol.Cell 4: 469-482; Table 3 pp.476 Reaction Scheme 3 Footnote states that ligands do not have any effect on the formation of the Tar-Chew-CheA complex so same rates are used for Aspartate or Ni associated Tar complexes.
21 Complexing[2]kf
(uM^-1 s^-1)
1
(s^-1)
Kd(bf) = 10.0003(uM)-TA
CheW
TaW
  Complex formation of aspartate bound Tar and CheW Kf = 1 * 10e+05 /sec/M = 0.1 /sec/uM Kb = 1 /sec Bray et al 1993, Mol.Biol.Cell 4: 469-482; Table 3 pp.476 Reaction Scheme 3 Footnote states that ligands do not have any effect on the formation of complexes so same rates are used for Aspartate or Ni associated Tar complexes.
22 Complexing[3]kf
(uM^-1 s^-1)
55
(s^-1)
Kd(bf) = 0.0625(uM)-CheYp
Motor
MYp
  CheYp complexes with Flagellar Motor (M) Kf = 0.88/Set_Yp = 0.88/1e-08 /sec/M = 0.88e+2/sec/uM Kb = 5.5 /sec As per EXEC.C provided by Matthew Levin Bray et al 1993, Mol.Biol.Cell 4: 469-482
23 Complexing[4]kf
(uM^-1 s^-1)
66.4
(s^-1)
Kd(bf) = 0.0233(uM)-CheYp
MYp
MYpYp
  CheYp complexes with MYp Kf = 2.85/Set_Yp = 2.85/1e-08 /sec/M = 2.85e+2/sec/uM Kb = 6.64 /sec As per EXEC.C provided by Matthew Levin Bray et al 1993, Mol.Biol.Cell 4: 469-482
24 Complexing[5]kf
(uM^-1 s^-1)
51
(s^-1)
Kd(bf) = 0.0073(uM)-CheYp
MYpYp
MYpYpYp
  CheYp complexes with MYpYp Kf = 6.94/Set_Yp = 6.94/1e-08 /sec/M = 6.94e+2 /sec/uM Kb = 5.1 /sec As per EXEC.C provided by Matthew Levin Bray et al 1993, Mol.Biol.Cell 4: 469-482
25 Complexing[6]kf
(uM^-1 s^-1)
55
(s^-1)
Kd(bf) = 0.0027(uM)-CheYp
MYpYpYp
MYpYpYpYp
  CheYp complexes with MYpYpYp Kf = 20.07/Set_Yp = 20.07/1e-08 /sec/M = 20.07e+2 /sec/uM Kb = 5.5 /sec As per EXEC.C provided by Matthew Levin Bray et al 1993, Mol.Biol.Cell 4: 469-482
26 Complexing[7]kf
(uM^-1 s^-1)
10
(s^-1)
Kd(bf) = 2.5(uM)-TA
CheW
TWA
  TA and CheW complex formation Kf = 4*10e+05 /sec/M = 0.4 /sec/uM Kb = 1 /sec Table 3 pp.476 Reaction Scheme 7 Bray et al 1993, Mol.Biol.Cell 4: 469-482 Rates used here are 10 times that stated, to allow for faster time courses seen during the drop of bias on removal of stimulus.
27 Complexing[8]kf
(uM^-1 s^-1)
10
(s^-1)
Kd(bf) = 2.5(uM)-TnA
CheW
TnWA
  TnA and CheW complex formation Kf = 4*10e+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 7 Rates used here are 10 times that stated, to allow for faster time courses seen during the drop of bias on removal of stimulus. Footnote states that ligands do not have any effect on the formation of Tar-CheW-CheA complex so same rates are used for Aspartate or Ni associated Tar complexes.
28 Complexing[9]kf
(uM^-1 s^-1)
10
(s^-1)
Kd(bf) = 2.5(uM)-TaA
CheW
TaWA
  TaA and CheW complex formation Kf = 4*10e+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 7 Rates used here are 10 time that stated, to allow for faster time courses seen during the drop of bias on removal of stimulus. Footnote states that ligands do not have any effect on the formation of the Tar-CheW-CheA complex so same rates are used for Aspartate or Ni associated Tar complexes
29 Dephosphorylatio
n
kf
(uM^-1 s^-1)
0
(s^-1)
--CheYp
CheZ
CheY
  CheZ stimulated dephosphorylation of CheYp Kf = 5*10e+05 /sec/M = 0.5 /sec/uM Kb = 0 /sec Bray et al 1993, Mol.Biol.Cell 4: 469-482 Table 2 pp.475 Reaction Scheme 8
30 Dephosphorylatio
n[1]
kf
(uM^-1 s^-1)
0
(s^-1)
--CheYp
TaWA
CheY
  TWA-aspartate stimulated dephosphorylation of CheYp Kf = 1 * 10e08 /sec/M = 100 /sec/uM Kb = 0 /sec Bray et al 1993, Mol.Biol.Cell 4: 469-482 Table 2 pp.475 Reaction Scheme 4
31 Phosphotransferkf
(uM^-1 s^-1)
0
(uM^-1 s^-1)
--CheAp
CheB
CheBp
CheA
  Phosphotransfer from CheAp to CheB Kf = 1 * 10e6 /sec/M = 1 /sec/uM Kb = 0 /sec/M Bray et al 1993, Mol.Biol.Cell 4: 469-482 Table 2 pp.475 Reaction Scheme 9
32 Phosphotransfer[
1]
kf
(uM^-1 s^-1)
0
(uM^-1 s^-1)
--CheAp
CheY
CheYp
CheA
  Phosphotransfer from CheAp to CheY Kf = 2 * 10e+05 /sec/M = 0.2 /sec/uM Kb = 0 /sec/M Bray et al 1993, Mol.Biol.Cell 4: 469-482 Table 2 pp.475 Reaction Scheme 5


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