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Molecule Parameter List for MAPKK-ser

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

*MAPKK-ser* 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	0	2	2	0	0

Accession and Pathway Details

Accession Name	Accession No.	Accession Type	Pathway Link
EGFR_MAPK	58	Network	Shared_Object_EGFR_MAPK, MAPK, Ras, EGFR, Sos
Model of MAPK activation by EGFR in the synapse. Demonstration programs using this model are available here. Primary citation:Bhalla US. Biophys J. (2004) 87(2):745-53.

MAPKK-ser acting as a Molecule in EGFR_MAPK Network

Name	Accession Name	Pathway Name	Initial Conc. (uM)	Volume (fL)	Buffered
MAPKK-ser	EGFR_MAPK Accession No. : 58	MAPK Pathway No. : 230	0	1000	No
Intermediately phophorylated, assumed inactive, form of MAPKK

MAPKK-ser acting as a Substrate for an Enzyme in EGFR_MAPK Network

	Enzyme Molecule / Enzyme Activity	Accession Name	Pathway Name	Km (uM)	kcat (s^-1)	Ratio	Enzyme Type	Reagents
1	Raf-GTP-Ras* / Raf-GTP-Ras*.2	EGFR_MAPK Accession No. : 58	MAPK Pathway No. : 230	0.159091	0.105	4	explicit E-S complex	Substrate MAPKK-ser Product MAPKK*
	Same kinetics as other c-raf activated forms. See Force et al PNAS 91 1270-1274 1994. k1 = 1.1e-6, k2 = .42, k3 = 1.05 raise k1 to 5.5e-6
2	PPhosphatase2A / MAPKK-deph-ser	EGFR_MAPK Accession No. : 58	Shared_Object_ EGFR_MAPK Pathway No. : 229	15.6566	6	4.16667	explicit E-S complex	Substrate MAPKK-ser Product MAPKK

MAPKK-ser acting as a Product of an Enzyme in EGFR_MAPK Network

	Enzyme Molecule / Enzyme Activity	Accession Name	Pathway Name	Km (uM)	kcat (s^-1)	Ratio	Enzyme Type	Reagents
1	Raf-GTP-Ras* / Raf-GTP-Ras*.1	EGFR_MAPK Accession No. : 58	MAPK Pathway No. : 230	0.159091	0.105	4	explicit E-S complex	Substrate MAPKK Product MAPKK-ser
	Kinetics are the same as for the craf-1* activity, ie., k1=1.1e-6, k2=.42, k3 =0.105 These are based on Force et al PNAS USA 91 1270-1274 1994. These parms cannot reach the observed 4X stim of MAPK. So lets increase the affinity, ie, raise k1 10X to 1.1e-5 Lets take it back down to where it was. Back up to 5X: 5.5e-6
2	PPhosphatase2A / MAPKK-deph	EGFR_MAPK Accession No. : 58	Shared_Object_ EGFR_MAPK Pathway No. : 229	15.6566	6	4.16667	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.

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