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Molecule Parameter List for MKP-1 | 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 |
| MKP-1 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 | 2 | 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. |
MKP-1 acting as a Molecule in Ajay_Bhalla_2004_PKM_Tuning Network
| Name | Accession Name | Pathway Name | Initial Conc.
(uM) | Volume
(fL) | Buffered | | MKP-1 | Ajay_Bhalla_
2004_PKM_Tuning
Accession No. : 76 | Shared_Object_
Ajay_Bhalla_
2004_PKM_tuning
Pathway No. : 312 | 0.02 | 1.5 | No | | MKP-1 dephosphoryates and inactivates MAPK in vivo: Sun et al Cell 75 487-493 1993. Levels of MKP-1 are regulated, and rise in 1 hour. Kinetics from Charles et al PNAS 90:5292-5296 1993. They refer to Charles et al Oncogene 7 187-190 who show that half-life of MKP1/3CH134 is 40 min. 80% deph of MAPK in 20 min Sep 17 1997: CoInit now 0.4x to 0.0032. See parm searches from jun96 on. |
MKP-1 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 | MKP-1 /
MKP1-tyr-deph
| Ajay_Bhalla_
2004_PKM_Tuning
Accession No. : 76 | Shared_Object_
Ajay_Bhalla_
2004_PKM_tuning
Pathway No. : 312 | 7.00001 | 4 | 4 | explicit E-S complex | Substrate
MAPK-tyr
Product
MAPK
| | | The original kinetics have been modified to obey the k2 = 4 * k3 rule, while keeping kcat and Km fixed. As noted in the NOTES, the only constraining data point is the time course of MAPK dephosphorylation, which this model satisfies. It would be nice to have more accurate estimates of rate consts and MKP-1 levels from the literature. Effective Km : 67 nM kcat = 1.43 umol/min/mg | | 2 | MKP-1 /
MKP1-thr-deph
| Ajay_Bhalla_
2004_PKM_Tuning
Accession No. : 76 | Shared_Object_
Ajay_Bhalla_
2004_PKM_tuning
Pathway No. : 312 | 7.00001 | 4 | 4 | explicit E-S complex | Substrate
MAPK*
Product
MAPK-tyr
| | | See MKP1-tyr-deph |
| Database compilation and code copyright (C) 2022, Upinder S. Bhalla and NCBS/TIFR
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