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MAPKAPK2 / MAPKAP Kinase 2
mitogen-activated protein kinase-activated protein kinase 2
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.
| Gene Name: | mitogen-activated protein kinase-activated protein kinase 2 |
| Family/Subfamily: | Protein Kinase , MAPKAPK |
| Synonyms: | MAPKAPK2, MK-2, MAP KAP Kinase 2, MAPKAP kinase 2, MK2, MAPKAP-K2, MAPKAPK-2 |
| Target Sequences: | NM_004759 NP_004750.1 P49137 |
![MAPKAPK2 / MAPKAP Kinase 2 Antibody - Immunofluorescence of monoclonal antibody to MAPKAPK2 on HeLa cell. [antibody concentration 10 ug/ml]](https://lsbio-7d62.kxcdn.com/image2/mapkapk2-mapkap-kinase-2-antibody-clone-2b3-ls-c133109/50437_4927040.jpg)
![MAPKAPK2 / MAPKAP Kinase 2 Antibody - Anti-MAPKAP Kinase 2 Polyclonal Antibody - Western Blot. Affinity purified anti-MAPKAP Kinase 2 polyclonal antibody detects MK2 in unstimulated human HeLa whole cell lysate by western blot. Polyclonal rabbit-anti-MAPKAP Kinase 2 used at a 1:2000 dilution to detect 20 ug of whole cell lysate containing MK2. This antibody detects a single 44 kD protein as indicated in crude extracts prepared from either unstimulated or TNFa stimulated human HeLa cell lysates. A 4-20% gradient gel was used to separate the protein by SDS-PAGE. The protein was transferred to nitrocellulose using standard methods. After blocking the membrane was probed with the primary antibody for 1 h at room temperature followed by washes and reaction with a 1:5000 dilution of IRDye800 conjugated Gt-a-Rabbit IgG [H&L] (code for 30 min at room temperature. LICORs Odyssey Infrared Imaging System was used to scan and process the image. Other detection systems will yield similar results.](https://lsbio-7d62.kxcdn.com/image2/mapkapk2-mapkap-kinase-2-antibody-ls-c18843/62803_4927033.jpg)
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