MAP2K4

MAP2K4
Available structures
PDB	Ortholog search: PDBe RCSB
List of PDB id codes
	3ALN, 3ALO, 3VUT
Identifiers
Aliases	MAP2K4, JNKK, JNKK1, MAPKK4, MEK4, MKK4, PRKMK4, SAPKK-1, SAPKK1, SEK1, SERK1, SKK1, mitogen-activated protein kinase kinase 4
External IDs	OMIM: 601335 MGI: 1346869 HomoloGene: 48159 GeneCards: MAP2K4
Gene location (Human)
Chr.	Chromosome 17 (human)
End	12,143,830 bp
Gene location (Mouse)
Chr.	Chromosome 11 (mouse)
End	65,679,123 bp
RNA expression pattern
	Top expressed in
	Brodmann area 46; ; postcentral gyrus; ; orbitofrontal cortex; ; middle temporal gyrus; ; superior frontal gyrus; ; prefrontal cortex; ; Achilles tendon; ; Brodmann area 23; ; pons; ; Brodmann area 9;
	Top expressed in
	facial motor nucleus; ; superior frontal gyrus; ; anterior horn of spinal cord; ; secondary oocyte; ; dorsomedial hypothalamic nucleus; ; paraventricular nucleus of hypothalamus; ; ventral tegmental area; ; medial dorsal nucleus; ; subiculum; ; hippocampus proper;
	More reference expression data
	n/a
Gene ontology
Molecular function	transferase activity; protein kinase activity; nucleotide binding; kinase activity; protein binding; protein tyrosine kinase activity; ATP binding; MAP kinase kinase activity; JUN kinase kinase activity; protein serine/threonine kinase activity; mitogen-activated protein kinase kinase kinase binding;
Cellular component	cytoplasm; nucleus; dendrite cytoplasm; cytosol; perikaryon; axon;
Biological process	phosphorylation; MAPK cascade; protein phosphorylation; cellular response to mechanical stimulus; response to wounding; peptidyl-tyrosine phosphorylation; signal transduction; negative regulation of motor neuron apoptotic process; apoptotic process; cell growth involved in cardiac muscle cell development; cellular response to sorbitol; positive regulation of smooth muscle cell apoptotic process; JNK cascade; positive regulation of protein phosphorylation; positive regulation of neuron apoptotic process; positive regulation of DNA replication; positive regulation of apoptotic process; positive regulation of nitric-oxide synthase biosynthetic process; regulation of mitotic cell cycle; stress-activated protein kinase signaling cascade; activation of protein kinase activity; regulation of apoptotic process; Fc-epsilon receptor signaling pathway;
	Sources:Amigo / QuickGO
Orthologs
	6416
	26398
	ENSG00000065559
	ENSMUSG00000033352
	P45985
	P47809
	NM_001281435; NM_003010
NM_009157; NM_001316367; NM_001316368; NM_001316369; NM_001362739;
	NM_001362740
	NP_001268364; NP_003001
NP_001303296; NP_001303297; NP_001303298; NP_033183; NP_001349668;
	NP_001349669
	Wikidata
View/Edit Human	View/Edit Mouse

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

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). MAP2K4 contains multiple amino acid sites that are phosphorylated and ubiquitinated. Genetic studies using Map2k4 knockout mice revealed embryonic lethality, impaired hepatogenesis and defective liver formation. Analysis of chimeric mice identified a role for Map2k4 in T cell cytokine production and proliferation. Map2k4-deficient chimeric mice frequently develop lymphadenopathy. MAP2K4 is altered in 1.97% of all human cancers.

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