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Molecule Parameter List for AMP

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
AMP participated asMoleculeSum total ofEnzymeSubstrate of an enzymeProduct of an enzymeSubstrate in ReactionProduct in Reaction
No. of occurrences1000400

Accession and Pathway Details
Accession NameAccession No.Accession TypePathway Link
CaMKII_model363Network
Shared_Object_CaMKII_model3 CaMKII CaM 
PP1 PP2B PP1_PSD 
AC PKA 
This is the complete model of CaMKII bistability, model 3. It exhibits bistability in CaMKII activation due to autophosphorylation at the PSD and local saturation of PP1. This version of model 3 includes PKA regulatory input. This has little effect on the deterministic calculations, but the PKA pathway introduces a lot of noise which causes a difference in stochastic runs.

AMP acting as a Molecule in  
CaMKII_model3 Network
NameAccession NamePathway NameInitial Conc.
(uM)
Volume
(fL)
Buffered
AMPCaMKII_model3
Accession No. : 63
AC
Pathway No. : 269
00.09No

AMP acting as a Product of an Enzyme in  
CaMKII_model3 Network
 Enzyme Molecule /
Enzyme Activity
Accession NamePathway NameKm (uM)kcat (s^-1)RatioEnzyme TypeReagents
1cAMP-PDE  /
PDE
CaMKII_model3
Accession No. : 63
AC
Pathway No. : 269
19.8411104explicit E-S complexSubstrate
cAMP

Product
AMP
    Best rates are from Conti et al Biochem 34 7979-7987 1995. Though these are for the Sertoli cell form, it looks like they carry nicely into alternatively spliced brain form. See Sette et al JBC 269:28 18271-18274 Km ~2 uM, Vmax est ~ 10 umol/min/mg for pure form. Brain protein is 93 kD but this was 67. So k3 ~10, k2 ~40, k1 ~4.2e-6
2cAMP-PDE*  /
PDE*
CaMKII_model3
Accession No. : 63
AC
Pathway No. : 269
19.8413204explicit E-S complexSubstrate
cAMP

Product
AMP
    This form has about twice the activity of the unphosphorylated form. See Sette et al JBC 269:28 18271-18274 1994. We'll ignore cGMP effects for now.
3PDE1  /
PDE1
CaMKII_model3
Accession No. : 63
AC
Pathway No. : 269
39.69991.6674.0012explicit E-S complexSubstrate
cAMP

Product
AMP
    Rate is 1/6 of the CaM stim form. We'll just reduce all lf k1, k2, k3 so that the Vmax goes down 1/6.
4CaM.PDE1  /
CaM.PDE1
CaMKII_model3
Accession No. : 63
AC
Pathway No. : 269
39.6831104explicit E-S complexSubstrate
cAMP

Product
AMP
    Max activity ~10umol/min/mg in presence of lots of CaM. Affinity is low, 40 uM. k3 = 10, k2 = 40, k1 = (50/40) / 6e5.



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