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Interaction IDMol ATypeSpeciesVerbNatureMol BTypeSpecies
71583CCL2ProteinHomo sapiens-eIncreases activityindirectMAPK3ProteinHomo sapiens
MCP-1 stimulates, with distinct time courses, extracellular signal-related kinases (ERK1 and ERK2) and stress-activated protein kinases (SAPK1/JNK1 and SAPK2/p38).
Regulator
132564MAP2K1ProteinHomo sapiens-eIncreases activitydirectMAPK3ProteinHomo sapiens-e
We report the purification to near homogeneity of a 45-kDa phorbol ester-stimulated protein kinase that phosphorylates and activates the Erk-1 gene product.This kinase, which we provisionally denote MEK for MAPK/Erk kinase, phosphorylated kinase-inactive Erk-1 protein primarily on a tyrosine residue and, to a lesser extent, on a threonine.
148223Map2k2ProteinMus musculusIncreases activitydirectMapk3ProteinMus musculus
Estradiol-induced phosphorylation of ERK1/2 in explants of the mouse cerebral cortex: the roles of heat shock protein 90 (Hsp90) and MEK2. / Surprisingly, MEK2 but not MEK1 was the principal mediator of estradiol-induced activation of ERK. Our data demonstrate the requirement for Hsp90 in estrogen-induced activation of ERK1 and ERK2 by MEK2 in the developing mouse cerebral cortex and also provide insight into alternative mechanisms by which estradiol may influence cytoplasmic and nuclear events in responsive neurons via the MAP kinase cascade.
156878MAPK3ProteinHomo sapiens-eIncreases activitydirectCEBPBProteinHomo sapiens-e
ERK1 and ERK2 activate CCAAAT/enhancer-binding protein-beta-dependent gene transcription in response to interferon-gamma. / We show that ERKs are activated by IFN-gamma to stimulate C/EBP-beta-dependent expression. / Mutant MKK1, its inhibitors, and mutant ERK suppressed IFN-gamma-stimulated gene induction through the gamma-IFN-activated transcriptional element.
Regulator
172890Map2k1ProteinRattus norvegicusIncreases activitydirectMapk3ProteinRattus norvegicus
Here we show that in C6 glioma cells, transiently expressing the dominant-negative form of c-Ha-Ras (Asn-17) abrogated IFN-gamma-induced ERK1 and ERK2 activation. Furthermore, PD98059, a specific MEK1 inhibitor, also blocked this activation. These results indicate that p21ras and MEK1 are required for IFN-gamma-induced ERK1 and ERK2 activation.
232119CCR2ProteinHomo sapiens-eIncreases activityindirectMAPK3ProteinHomo sapiens
Within 2 min, the MCPs (1-4) elicited a rapid and transient activation of MAPK in peripheral blood mononuclear cells and in HEK-293 cells expressing CCR2b. U0126, an inhibitor of MAPK-kinase (MEK) activation, not only prevented extracellular signal-regulated kinase 1/2 (ERK1/2) activation but also significantly inhibited the MCP-mediated chemotaxis.
Regulator
421539Mapk3ProteinRattus norvegicusIncreases expressionindirectPtgs2ProteinRattus norvegicus
Chronic ethanol intake induces brain damage, although the mechanisms involved in this effect are not well understood. / We used cerebral cortex from control and chronic ethanol-fed rats, which received ethanol-liquid diet for 5 months and cultured of astrocytes exposed to 75 mM ethanol for 7 days. Our results demonstrate that chronic ethanol treatment up-regulates iNOS, COX-2 and IL-1beta in rat cerebral cortex and in cultured astrocytes. Under both experimental conditions, up-regulation of these inflammatory mediators and IL-1RI concomitantly occurs with the stimulation of IRAK and MAP kinases, including ERK1/2, p-38 and JNK, which trigger the downstream activation of oxidant-sensitive transcription factors NF-KB and AP-1.
Regulator