Dual-specificity mitogen-activated protein kinase kinase 4 is an enzyme that in humans is encoded by the MAP2K4 gene.[5]

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MAP2K4
Available structures
PDBOrtholog search: PDBe RCSB
Identifiers
AliasesMAP2K4, JNKK, JNKK1, MAPKK4, MEK4, MKK4, PRKMK4, SAPKK-1, SAPKK1, SEK1, SERK1, SKK1, mitogen-activated protein kinase kinase 4
External IDsOMIM: 601335; MGI: 1346869; HomoloGene: 48159; GeneCards: MAP2K4; OMA:MAP2K4 - orthologs
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

NM_001281435
NM_003010

RefSeq (protein)

NP_001268364
NP_003001

Location (UCSC)Chr 17: 12.02 – 12.14 MbChr 11: 65.58 – 65.68 Mb
PubMed search[3][4]
Wikidata
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MAP2K4 encodes a dual-specificity kinase that belongs to the Ser/Thr protein kinase family. MAP2K4 phosphorylates MAP kinases in response to various environmental stresses or mitogenic stimuli. MAPK8/JNK1, MAPK9/JNK2, and MAPK14/p38 are substrates for MAP2K4, but MAPK1/ERK2 and MAPK3/ERK1 are not phosphorylated by MAP2K4. Structurally, MAP2K4 contains a kinase domain that is phosphorylated and activated by MAP3K1(aka MEKK1).[6] MAP2K4 contains multiple amino acid sites that are phosphorylated and ubiquitinated.[7] Genetic studies using Map2k4 knockout mice revealed embryonic lethality, impaired hepatogenesis and defective liver formation.[8][9] Analysis of chimeric mice identified a role for Map2k4 in T cell cytokine production and proliferation.[10] Map2k4-deficient chimeric mice frequently develop lymphadenopathy.[11] MAP2K4 is altered in 1.97% of all human cancers.[12]

Interactions

MAP2K4 has been shown to interact with:


References

Further reading

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