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HPMR

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mitogen-activated protein kinase kinase kinase kinase 3 OKDB#: 5278
 Symbols: MAP4K3 Species: human
 Synonyms: GLK, MEKKK3, MEKKK 3, MAPKKKK3, RAB8IPL1  Locus: 2p22.1 in Homo sapiens


For retrieval of Nucleotide and Amino Acid sequences please go to: OMIM Entrez Gene
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General Comment MAP4K family kinases act in parallel to MST1/2 to activate LATS1/2 in the Hippo pathway. Meng Z et al. (2015) The Hippo pathway plays a central role in tissue homoeostasis, and its dysregulation contributes to tumorigenesis. Core components of the Hippo pathway include a kinase cascade of MST1/2 and LATS1/2 and the transcription co-activators YAP/TAZ. In response to stimulation, LATS1/2 phosphorylate and inhibit YAP/TAZ, the main effectors of the Hippo pathway. Accumulating evidence suggests that MST1/2 are not required for the regulation of YAP/TAZ. Here we show that deletion of LATS1/2 but not MST1/2 abolishes YAP/TAZ phosphorylation. We have identified MAP4K family members-Drosophila Happyhour homologues MAP4K1/2/3 and Misshapen homologues MAP4K4/6/7-as direct LATS1/2-activating kinases. Combined deletion of MAP4Ks and MST1/2, but neither alone, suppresses phosphorylation of LATS1/2 and YAP/TAZ in response to a wide range of signals. Our results demonstrate that MAP4Ks act in parallel to and are partially redundant with MST1/2 in the regulation of LATS1/2 and YAP/TAZ, and establish MAP4Ks as components of the expanded Hippo pathway.//////////////////

NCBI Summary: This gene encodes a member of the mitogen-activated protein kinase kinase kinase kinase family. The encoded protein activates key effectors in cell signalling, among them c-Jun. Alternatively spliced transcripts encoding multiple isoforms have been observed for this gene. [provided by RefSeq, Jul 2012]
General function Enzyme
Comment
Cellular localization Cytoplasmic
Comment
Ovarian function
Comment
Expression regulated by
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Ovarian localization
Comment
Follicle stages
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Phenotypes
Mutations 0 mutations
Genomic Region show genomic region
Phenotypes and GWAS show phenotypes and GWAS
Links
OMIM (Online Mendelian Inheritance in Man: an excellent source of general gene description and genetic information.)
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created: Oct. 13, 2015, 11:11 a.m. by: system   email:
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last update: Oct. 13, 2015, 11:12 a.m. by: hsueh    email:



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