ID:MAPK2_HUMAN DESCRIPTION: RecName: Full=MAP kinase-activated protein kinase 2; Short=MAPK-activated protein kinase 2; Short=MAPKAP kinase 2; Short=MAPKAP-K2; Short=MAPKAPK-2; Short=MK-2; Short=MK2; EC=2.7.11.1; FUNCTION: Stress-activated serine/threonine-protein kinase involved in cytokines production, endocytosis, reorganization of the cytoskeleton, cell migration, cell cycle control, chromatin remodeling, DNA damage response and transcriptional regulation. Following stress, it is phosphorylated and activated by MAP kinase p38-alpha/MAPK14, leading to phosphorylation of substrates. Phosphorylates serine in the peptide sequence, Hyd-X-R-X(2)-S, where Hyd is a large hydrophobic residue. Phosphorylates ALOX5, CDC25B, CDC25C, ELAVL1, HNRNPA0, HSF1, HSP27/HSPB1, KRT18, KRT20, LIMK1, LSP1, PABPC1, PARN, PDE4A, RCSD1, RPS6KA3, TAB3 and TTP/ZFP36. Mediates phosphorylation of HSP27/HSPB1 in response to stress, leading to dissociate HSP27/HSPB1 from large small heat- shock protein (sHsps) oligomers and impair their chaperone activities and ability to protect against oxidative stress effectively. Involved in inflammatory response by regulating tumor necrosis factor (TNF) and IL6 production post-transcriptionally: acts by phosphorylating AU-rich elements (AREs)-binding proteins ELAVL1, HNRNPA0, PABPC1 and TTP/ZFP36, leading to regulate the stability and translation of TNF and IL6 mRNAs. Phosphorylation of TTP/ZFP36, a major post-transcriptional regulator of TNF, promotes its binding to 14-3-3 proteins and reduces its ARE mRNA affinity leading to inhibition of dependent degradation of ARE-containing transcript. Also involved in late G2/M checkpoint following DNA damage through a process of post-transcriptional mRNA stabilization: following DNA damage, relocalizes from nucleus to cytoplasm and phosphorylates HNRNPA0 and PARN, leading to stabilize GADD45A mRNA. Involved in toll-like receptor signaling pathway (TLR) in dendritic cells: required for acute TLR-induced macropinocytosis by phosphorylating and activating RPS6KA3. CATALYTIC ACTIVITY: ATP + a protein = ADP + a phosphoprotein. ENZYME REGULATION: Activated following phosphorylation by p38- alpha/MAPK14 following various stresses. Inhibited following sumoylation. Specifically inhibited by pyrrolopyridine inhibitors. SUBUNIT: Heterodimer with p38-alpha/MAPK14. The heterodimer with p38-alpha/MAPK14 forms a stable complex: molecules are positioned 'face to face' so that the ATP-binding sites of both kinases are at the heterodimer interface. Interacts with PHC2. INTERACTION: Q00613:HSF1; NbExp=5; IntAct=EBI-993299, EBI-719620; P04792:HSPB1; NbExp=2; IntAct=EBI-993299, EBI-352682; Q16539:MAPK14; NbExp=2; IntAct=EBI-993299, EBI-73946; SUBCELLULAR LOCATION: Cytoplasm. Nucleus. Note=Phosphorylation and subsequent activation releases the autoinhibitory helix, resulting in the export from the nucleus into the cytoplasm. TISSUE SPECIFICITY: Expressed in all tissues examined. PTM: Sumoylation inhibits the protein kinase activity. PTM: Phosphorylated and activated by MAP kinase p38-alpha/MAPK14 at Thr-222, Ser-272 and Thr-334. SIMILARITY: Belongs to the protein kinase superfamily. CAMK Ser/Thr protein kinase family. SIMILARITY: Contains 1 protein kinase domain.
The RNAfold program from the Vienna RNA Package is used to perform the secondary structure predictions and folding calculations. The estimated folding energy is in kcal/mol. The more negative the energy, the more secondary structure the RNA is likely to have.
Pfam Domains: PF00069 - Protein kinase domain PF06293 - Lipopolysaccharide kinase (Kdo/WaaP) family PF07714 - Protein tyrosine and serine/threonine kinase
ModBase Predicted Comparative 3D Structure on P49137
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Orthologous Genes in Other Species
Orthologies between human, mouse, and rat are computed by taking the best BLASTP hit, and filtering out non-syntenic hits. For more distant species reciprocal-best BLASTP hits are used. Note that the absence of an ortholog in the table below may reflect incomplete annotations in the other species rather than a true absence of the orthologous gene.