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Molecule Parameter List for MAPKK

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 participated asMoleculeSum total ofEnzymeSubstrate of an enzymeProduct of an enzymeSubstrate in ReactionProduct in Reaction
No. of occurrences1001100

Accession and Pathway Details
Accession NameAccession No.Accession TypePathway Link
EGFR_MAPK58Network
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 acting as a Molecule in  
EGFR_MAPK Network
NameAccession NamePathway NameInitial Conc.
(uM)
Volume
(fL)
Buffered
MAPKKEGFR_MAPK
Accession No. : 58
MAPK
Pathway No. : 230
0.181000No
Conc is from Seger et al JBC 267:20 pp14373 (1992) mwt is 45/46 Kd We assume that phosphorylation on both ser and thr is needed for activiation. See Kyriakis et al Nature 358 417 1992 Init conc of total is 0.18

MAPKK acting as a Substrate for an Enzyme in  
EGFR_MAPK Network
Enzyme Molecule /
Enzyme Activity
Accession NamePathway NameKm (uM)kcat (s^-1)RatioEnzyme TypeReagents
Raf-GTP-Ras*  /
Raf-GTP-Ras*.1
EGFR_MAPK
Accession No. : 58
MAPK
Pathway No. : 230
0.1590910.1054explicit E-S complexSubstrate
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

MAPKK acting as a Product of an Enzyme in  
EGFR_MAPK Network
Enzyme Molecule /
Enzyme Activity
Accession NamePathway NameKm (uM)kcat (s^-1)RatioEnzyme TypeReagents
PPhosphatase2A  /
MAPKK-deph-ser
EGFR_MAPK
Accession No. : 58
  • Shared_Object_
    EGFR_MAPK

    Pathway No. : 229
  • 15.656664.16667explicit E-S complexSubstrate
    MAPKK-ser

    Product
    MAPKK



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