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貨期:
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用途:
For Research Use Only. Not for use in diagnostic or therapeutic procedures.
Atypical MAPK protein that regulates several process such as autophagy, ciliogenesis, protein trafficking/secretion and genome integrity, in a kinase activity-dependent manner. Controls both, basal and starvation-induced autophagy throught its interaction with GABARAP, MAP1LC3B and GABARAPL1 leading to autophagosome formation, SQSTM1 degradation and reduced MAP1LC3B inhibitory phosphorylation. Regulates primary cilium formation and the localization of ciliary proteins involved in cilium structure, transport, and signaling. Prevents the relocation of the sugar-adding enzymes from the Golgi to the endoplasmic reticulum, thereby restricting the production of sugar-coated proteins. Upon amino-acid starvation, mediates transitional endoplasmic reticulum site disassembly and inhibition of secretion. Binds to chromatin leading to MAPK15 activation and interaction with PCNA, that which protects genomic integrity by inhibiting MDM2-mediated degradation of PCNA. Regulates DA transporter (DAT) activity and protein expression via activation of RhoA. In response to H(2)O(2) treatment phosphorylates ELAVL1, thus preventing it from binding to the PDCD4 3'UTR and rendering the PDCD4 mRNA accessible to miR-21 and leading to its degradation and loss of protein expression. Also functions in a kinase activity-independent manner as a negative regulator of growth. Phosphorylates in vitro FOS and MBP. During oocyte maturation, plays a key role in the microtubule organization and meiotic cell cycle progression in oocytes, fertilized eggs, and early embryos. Interacts with ESRRA promoting its re-localization from the nucleus to the cytoplasm and then prevents its transcriptional activity.
基因功能參考文獻(xiàn):
Our results describe a primary cilia-related role for this poorly studied member of the MAPK family in vivo, and indicate a broad requirement for MAPK15 in the formation of multiple ciliary classes across species. PMID: 29021280
High MAPK15 expression is associated with male germ cell tumors. PMID: 26988910
In HeLa cells, phosphorylation of HuR by ERK8 prevents it from binding to PDCD4 mRNA and allows miR-21-mediated degradation of PDCD4. PMID: 26595526
depletion of endogenous MAPK15 expression inhibited BCR-ABL1-dependent cell proliferation, in vitro PMID: 26291129
The present study suggests that MAPK15 overexpression may contribute to the malignant transformation of gastric mucosa by prolonging the stability of c-Jun. PMID: 26035356
ERK8 appears as a constitutive brake on N-Acetylgalactosaminyltransferase relocalisation, and the loss of its expression could drive cancer aggressivity through increased cell motility. PMID: 24618899
Data suggest that the model coulb be a tool for the development of specific ERK8 kinase inhibitors. PMID: 23326322
ATG8-like proteins (MAP1LC3B, GABARAP and GABARAPL1) are novel interactors of MAPK15/ERK8, a MAP kinase involved in cell proliferation and transformation. PMID: 22948227
a novel function for ERK8 as a bona fide ERRalpha corepressor, involved in control of its cellular localization by nuclear exclusion, and suggest a key role for this MAP kinase in the regulation of the biological activities of this nuclear receptor. PMID: 21190936
Data show that ERK8 prevents HDM2-mediated PCNA destruction by inhibiting the association of PCNA with HDM2, and implicate ERK8 in the regulation of genomic stability. PMID: 20733054
Extracellular signal-regulated kinase 8-mediated c-Jun phosphorylation increases tumorigenesis of human colon cancer PMID: 20395206
ERK8, a new member of the mitogen-activated protein kinase family. PMID: 11875070
The activity of ERK8 in transfected HEK-293 cells depends on the relative rates of ERK8 autophosphorylation and dephosphorylation by one or more members of the PPP family of protein serine/threonine phosphatases. PMID: 16336213
Erk8 has a role as a novel effector of RET/PTC3 and, therefore, RET biological functions PMID: 16484222
human ERK8 has a role as a negative regulator of human GRalpha, acting through Hic-5 PMID: 16624805
Regulation of the activity and expression of DERK8 by DNA damage are reported. PMID: 19166846