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Molecule Parameter List for PPhosphatase2A

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

*PPhosphatase2A* participated as	Molecule	Sum total of	Enzyme	Substrate of an enzyme	Product of an enzyme	Substrate in Reaction	Product in Reaction
No. of occurrences	1	0	4	0	0	0	0

Accession and Pathway Details

Accession Name	Accession No.	Accession Type	Pathway Link
Ajay_Bhalla_ 2004_PKM_Tuning	76	Network	PKC, Shared_Object_Ajay_Bhalla_2004_PKM_tuning, PLA2, PLCbeta, Gq, MAPK, Ras, EGFR, Sos, PLC_g, CaMKII, CaM, PP1, PP2B, PKA, AC, PKM
This model is taken from the Ajay SM, Bhalla US. Eur J Neurosci. 2004 Nov;20(10):2671-80. This is the reference feedforward model from Figure 8a.

PPhosphatase2A acting as a Molecule in Ajay_Bhalla_2004_PKM_Tuning Network

Name	Accession Name	Pathway Name	Initial Conc. (uM)	Volume (fL)	Buffered
PPhosphatase2A	Ajay_Bhalla_ 2004_PKM_Tuning Accession No. : 76	Shared_Object_ Ajay_Bhalla_ 2004_PKM_tuning Pathway No. : 312	1	1.5	No
Refs: Pato et al Biochem J 293:35-41(93); Takai&Mieskes Biochem J 275:233-239 k1=1.46e-4, k2=1000,k3=250. these use kcat values for calponin. Also, units of kcat may be in min! revert to Vmax base: k3=6, k2=25,k1=3.3e-6 or 6,6,1e-6 CoInit assumed 0.1 uM. See NOTES for MAPK_Ras50.g. CoInit now 0.08 Sep 17 1997: Raise CoInt 1.4x to 0.224, see parm searches from jun 96 on.

PPhosphatase2A acting as an Enzyme in Ajay_Bhalla_2004_PKM_Tuning Network

	Enzyme Molecule / Enzyme Activity	Accession Name	Pathway Name	Km (uM)	kcat (s^-1)	Ratio	Enzyme Type	Reagents
1	PPhosphatase2A / craf-deph	Ajay_Bhalla_ 2004_PKM_Tuning Accession No. : 76	Shared_Object_ Ajay_Bhalla_ 2004_PKM_tuning Pathway No. : 312	15.6568	6	4	explicit E-S complex	Substrate craf-1* Product craf-1
	See parent PPhosphatase2A for parms
2	PPhosphatase2A / MAPKK-deph	Ajay_Bhalla_ 2004_PKM_Tuning Accession No. : 76	Shared_Object_ Ajay_Bhalla_ 2004_PKM_tuning Pathway No. : 312	15.6568	6	4	explicit E-S complex	Substrate MAPKK* Product MAPKK-ser
	See: Kyriakis et al Nature 358 pp 417-421 1992 Ahn et al Curr Op Cell Biol 4:992-999 1992 for this pathway. See parent PPhosphatase2A for parms.
3	PPhosphatase2A / MAPKK-deph-ser	Ajay_Bhalla_ 2004_PKM_Tuning Accession No. : 76	Shared_Object_ Ajay_Bhalla_ 2004_PKM_tuning Pathway No. : 312	15.6568	6	4	explicit E-S complex	Substrate MAPKK-ser Product MAPKK

4	PPhosphatase2A / craf**-deph	Ajay_Bhalla_ 2004_PKM_Tuning Accession No. : 76	Shared_Object_ Ajay_Bhalla_ 2004_PKM_tuning Pathway No. : 312	15.6568	6	4	explicit E-S complex	Substrate craf-1 Product** craf-1*
	Ueki et al JBC 269(22) pp 15756-15761 1994 show hyperphosphorylation of craf, so this is there to dephosphorylate it. Identity of phosphatase is not known to me, but it may be PP2A like the rest, so I have made it so.

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