NP_003001.1
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NCBI GenBank Nucleotide #
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UniProt Primary Accession #
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UniProt Secondary Accession #
UniProt Related Accession #
Molecular Weight
44,288 Da
NCBI Official Full Name
dual specificity mitogen-activated protein kinase kinase 4
NCBI Official Synonym Full Names
mitogen-activated protein kinase kinase 4
NCBI Official Synonym Symbols
JNKK; MEK4; MKK4; SEK1; JNKK1; SERK1; MAPKK4; PRKMK4; SAPKK1; SAPKK-1 [Similar Products]
NCBI Protein Information
dual specificity mitogen-activated protein kinase kinase 4; MEK 4; MAPKK 4; SAPK kinase 1; MAPK/ERK kinase 4; SAPK/ERK kinase 1; MAP kinase kinase 4; JNK-activated kinase 1; JNK activating kinase 1; JNK-activating kinase 1; c-Jun N-terminal kinase kinase 1; stress-activated protein kinase kinase 1
UniProt Protein Name
Dual specificity mitogen-activated protein kinase kinase 4
UniProt Synonym Protein Names
JNK-activating kinase 1; MAPK/ERK kinase 4; MEK 4; SAPK/ERK kinase 1; SEK1; Stress-activated protein kinase kinase 1; SAPK kinase 1; SAPKK-1; SAPKK1; c-Jun N-terminal kinase kinase 1
UniProt Synonym Gene Names
JNKK1; MEK4; MKK4; PRKMK4; SEK1; SERK1; SKK1; MAP kinase kinase 4; MAPKK 4; MEK 4; SEK1; SAPK kinase 1; SAPKK-1; SAPKK1; JNKK [Similar Products]
UniProt Entry Name
MP2K4_HUMAN
NCBI Summary for SEK1/MKK4/JNKK1
This gene encodes a dual specificity protein kinase that belongs to the Ser/Thr protein kinase family. This kinase is a direct activator of MAP kinases in response to various environmental stresses or mitogenic stimuli. It has been shown to activate MAPK8/JNK1, MAPK9/JNK2, and MAPK14/p38, but not MAPK1/ERK2 or MAPK3/ERK3. This kinase is phosphorylated, and thus activated by MAP3K1/MEKK. The knockout studies in mice suggested the roles of this kinase in mediating survival signal in T cell development, as well as in the organogenesis of liver. [provided by RefSeq, Jul 2008]
UniProt Comments for SEK1/MKK4/JNKK1
MKK4: dual specificity kinase of the STE7 family that phosphorylates and activates JNK1 and -2 as well as p38 but not ERK1 or -2. Mediates cellular responses to various cellular stresses and inflammatory cytokines. Phosphorylation by Akt inhibits MKK4 and suppresses stress-activated signal transduction.
Protein type: Protein kinase, dual-specificity (non-receptor); Protein kinase, STE; Kinase, protein; EC 2.7.12.2; STE group; STE7 family
Chromosomal Location of Human Ortholog: 17p12
Cellular Component: dendrite cytoplasm; axon; perikaryon; intracellular; nucleus; cytosol
Molecular Function: protein serine/threonine kinase activity; protein binding; protein-tyrosine kinase activity; mitogen-activated protein kinase kinase kinase binding; JUN kinase kinase activity; ATP binding; protein kinase activity
Biological Process: peptidyl-tyrosine phosphorylation; apoptosis; MyD88-independent toll-like receptor signaling pathway; stress-activated MAPK cascade; pathogenesis; toll-like receptor 3 signaling pathway; signal transduction; activation of JNK activity; toll-like receptor 2 signaling pathway; toll-like receptor 10 signaling pathway; MyD88-dependent toll-like receptor signaling pathway; toll-like receptor 5 signaling pathway; positive regulation of neuron apoptosis; toll-like receptor signaling pathway; JNK cascade; innate immune response; toll-like receptor 9 signaling pathway; toll-like receptor 4 signaling pathway; positive regulation of DNA replication; positive regulation of nitric-oxide synthase biosynthetic process
Research Articles on SEK1/MKK4/JNKK1
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Products associated with anti-SEK1/MKK4/JNKK1 antibody
Pathways associated with anti-SEK1/MKK4/JNKK1 antibody
Diseases associated with anti-SEK1/MKK4/JNKK1 antibody
Organs/Tissues associated with anti-SEK1/MKK4/JNKK1 antibody
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