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Accession Type:
Network
Osc_Ca_
IP3metabolism
MIPP
CaMKII
CaM
PKC
IP3-3K
Gq
PLCbeta
134_dephos
145_dephos
IP4-system
IHP-system
1345_dephos
CaRegulation
Othmer-Tang-mode
l
 Molecule
 Enzyme
 Reaction

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Reaction List for pathway Othmer-Tang-model (Pathway Number 133)

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 actIP3R1000.01
(uM^-2 s^-1)
5
(s^-1)
Keq = 0.005(uM)-
  • mirror_
    Ca.IP3.IP3R

  • mirror_
    Ca.IP3.IP3R

  • mirror_
    Ca.IP3.IP3R

  • activeIP3R
      Rate set so that almost all Ca.IP3.IP3R complex (formed by Ca and IP3 binding to the IP3R) becomes the active Ca conducting channel
    2 bind_act_Ca15
    (uM^-1 s^-1)
    1.65
    (s^-1)
    Kd(bf) = 0.11(uM)-IP3.IP3R
    Ca
    Ca.IP3.IP3R
      from the O-T model in Tang et al, Biophys J 70, 1996
    3 bind_inact_Ca1.8001
    (uM^-1 s^-1)
    0.21
    (s^-1)
    Kd(bf) = 0.1167(uM)-Ca.IP3.IP3R
    Ca
    Ca2.IP3.IP3R
      from the O-T model in Tang et al, Biophys J 70, 1996
    4 bind_IP312
    (uM^-1 s^-1)
    8
    (s^-1)
    Kd(bf) = 0.6667(uM)-IP3R
    IP3
    IP3.IP3R
      from the O-T model in Tang et al, Biophys J 70, 1996


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