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Molecule Parameter List for ATP

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
ATP participated asMoleculeSum total ofEnzymeSubstrate of an enzymeProduct of an enzymeSubstrate in ReactionProduct in Reaction
No. of occurrences1002000

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.

ATP acting as a Molecule in  
CaMKII_model3 Network
NameAccession NamePathway NameInitial Conc.
(uM)
Volume
(fL)
Buffered
ATPCaMKII_model3
Accession No. : 63
AC
Pathway No. : 269
20000.09Yes
ATP is present in all cells between 2 and 10 mM. See Lehninger

ATP acting as a Substrate for an Enzyme in  
CaMKII_model3 Network
 Enzyme Molecule /
Enzyme Activity
Accession NamePathway NameKm (uM)kcat (s^-1)RatioEnzyme TypeReagents
1AC1-CaM  /
kenz
CaMKII_model3
Accession No. : 63
AC
Pathway No. : 269
299.9984.54Classical Michaelis-Menten
V = Etot.S.Kcat/Km+S
Substrate
ATP

Product
cAMP
    17 Feb 2005 Halved Vmax as the amount of enzyme has been doubled to get an integer value in the spine. 18 Feb 2005. Updated Km from BRENDA: EC No 4.6.1.1 Rat Km: 0.95 mM Turnover 12/sec. Human Km: 0.3 mM 12 umol/min/mg for mammalia, turnover is 12/sec See PMID 8663304 by Dessauer and Gilman JBC 271 1996 Unfortunately turnover range is from 34 down to 0.1 in different studies, according to BRENDA.
2AC2*  /
kenz
CaMKII_model3
Accession No. : 63
AC
Pathway No. : 269
300.00224Classical Michaelis-Menten
V = Etot.S.Kcat/Km+S
Substrate
ATP

Product
cAMP
    Reduced Km to match expt data for basal activation of AC2 by PKC. Now k1 = 2.9e-6, k2 = 72, k3 = 18 18 Feb: Raised Km to 300 based on BRENDA data. Unlikely to make much difference, given the vast amount of ATP.



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