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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
 Molecule
 Enzyme
 Reaction
1345_dephos
CaRegulation
Othmer-Tang-mode
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Enzyme List for pathway IHP-system (Pathway Number 168)

 Molecule Name/
Site Name
Km (uM) kcat (1/s)Ratio
(k2/k3)
Enzyme TypeSubstrate Product
1 Enzyme Activity:
dipp_ip7

Enzyme Molecule:
DIPP1
0.3400065.14explicit E-S complexPP-IP5
IP6
  from Safrany et al, EMBO J 17(22); 1998 Vmax represents activity of recombinant human protein which is 20-50 fold greater than activity of the purified rat enzyme
2 Enzyme Activity:
dipp_ip8

Enzyme Molecule:
DIPP1
0.03400350.61654explicit E-S complexbisPP-IP4
PP-IP5
  from Safrany et al, EMBO J 17(22); 1998 Vmax represents activity of human recombinant protein, which is 20-50 fold greater than activity of the purified rat enzyme
3 Enzyme Activity:
ip5_k1

Enzyme Molecule:
IP6-K
6.699990.2344explicit E-S complexIP5(13456)
PP-IP4
  from Saiardi et al, JBC 275(32); 2000: 24686-92
4 Enzyme Activity:
ip5_k2

Enzyme Molecule:
IP6_K2
8.40.05724explicit E-S complexIP5(13456)
PP-IP4
  from Saiardi et al, JBC 275(32); 2000: 24686-92
5 Enzyme Activity:
ip6_k2

Enzyme Molecule:
IP6_K2
2.999991.6334explicit E-S complexIP6
PP-IP5
  from Saiardi et al, Curr Biol 9; 1999
6 Enzyme Activity:
pp-ip4-k1

Enzyme Molecule:
IP6-K
23.00030.054explicit E-S complexPP-IP4
bisPP-IP3
  from Saiardi et al, JBC 275; 2000 approx Km and Vmax calculated from first order rate constants
7 Enzyme Activity:
pp-ip4-k2

Enzyme Molecule:
IP6_K2
30.00030.014explicit E-S complexPP-IP4
bisPP-IP3
  from Saiardi et al, JBC 275; 2000 approx Km and Vmax calculated from first order rate constants


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