NameDual specificity mitogen-activated protein kinase kinase 1
Synonyms
  • 2.7.12.2
  • ERK activator kinase 1
  • MAP kinase kinase 1
  • MAPK/ERK kinase 1
  • MEK 1
  • MEK1
  • PRKMK1
Gene NameMAP2K1
OrganismHuman
Amino acid sequence
>lcl|BSEQ0001734|Dual specificity mitogen-activated protein kinase kinase 1
MPKKKPTPIQLNPAPDGSAVNGTSSAETNLEALQKKLEELELDEQQRKRLEAFLTQKQKV
GELKDDDFEKISELGAGNGGVVFKVSHKPSGLVMARKLIHLEIKPAIRNQIIRELQVLHE
CNSPYIVGFYGAFYSDGEISICMEHMDGGSLDQVLKKAGRIPEQILGKVSIAVIKGLTYL
REKHKIMHRDVKPSNILVNSRGEIKLCDFGVSGQLIDSMANSFVGTRSYMSPERLQGTHY
SVQSDIWSMGLSLVEMAVGRYPIPPPDAKELELMFGCQVEGDAAETPPRPRTPGRPLSSY
GMDSRPPMAIFELLDYIVNEPPPKLPSGVFSLEFQDFVNKCLIKNPAERADLKQLMVHAF
IKRSDAEEVDFAGWLCSTIGLNQPSTPTHAAGV
Number of residues393
Molecular Weight43438.65
Theoretical pI6.61
GO Classification
Functions
  • protein N-terminus binding
  • protein serine/threonine/tyrosine kinase activity
  • MAP kinase kinase activity
  • ATP binding
  • protein serine/threonine kinase activator activity
  • protein C-terminus binding
  • protein tyrosine kinase activity
  • protein kinase activity
  • protein serine/threonine kinase activity
  • receptor signaling protein tyrosine phosphatase activity
Processes
  • melanosome transport
  • positive regulation of cell migration
  • trachea formation
  • response to oxidative stress
  • activation of MAPK activity
  • ERK1 and ERK2 cascade
  • positive regulation of protein serine/threonine kinase activity
  • negative regulation of homotypic cell-cell adhesion
  • activation of MAPKK activity
  • TRIF-dependent toll-like receptor signaling pathway
  • cell cycle arrest
  • positive regulation of gene expression
  • MyD88-dependent toll-like receptor signaling pathway
  • fibroblast growth factor receptor signaling pathway
  • small GTPase mediated signal transduction
  • protein heterooligomerization
  • MyD88-independent toll-like receptor signaling pathway
  • insulin receptor signaling pathway
  • cell motility
  • negative regulation of gene expression
  • regulation of early endosome to late endosome transport
  • MAPK cascade
  • cellular senescence
  • chemotaxis
  • regulation of Golgi inheritance
  • negative regulation of cell proliferation
  • stress-activated MAPK cascade
  • neurotrophin TRK receptor signaling pathway
  • labyrinthine layer development
  • mitophagy in response to mitochondrial depolarization
  • toll-like receptor 10 signaling pathway
  • Ras protein signal transduction
  • vesicle transport along microtubule
  • toll-like receptor 2 signaling pathway
  • signal transduction
  • vascular endothelial growth factor receptor signaling pathway
  • regulation of axon regeneration
  • toll-like receptor 3 signaling pathway
  • regulation of vascular smooth muscle contraction
  • keratinocyte differentiation
  • toll-like receptor 4 signaling pathway
  • response to glucocorticoid
  • positive regulation of axonogenesis
  • axon guidance
  • positive regulation of Ras protein signal transduction
  • toll-like receptor 5 signaling pathway
  • positive regulation of transcription elongation from RNA polymerase II promoter
  • epidermal growth factor receptor signaling pathway
  • regulation of stress-activated MAPK cascade
  • toll-like receptor 9 signaling pathway
  • positive regulation of GTPase activity
  • placenta blood vessel development
  • innate immune response
  • toll-like receptor signaling pathway
  • movement of cell or subcellular component
  • epithelial cell proliferation involved in lung morphogenesis
  • mitotic nuclear division
  • toll-like receptor TLR1
  • Golgi inheritance
  • Fc-epsilon receptor signaling pathway
  • toll-like receptor TLR6
  • response to axon injury
Components
  • late endosome
  • Golgi apparatus
  • axon
  • early endosome
  • cytoplasm
  • cytosol
  • mitochondrion
  • extracellular exosome
  • microtubule organizing center
  • perinuclear region of cytoplasm
  • cell cortex
  • perikaryon
  • microtubule
  • nucleus
  • endoplasmic reticulum
  • focal adhesion
  • plasma membrane
  • dendrite cytoplasm
General FunctionReceptor signaling protein tyrosine phosphatase activity
Specific FunctionDual specificity protein kinase which acts as an essential component of the MAP kinase signal transduction pathway. Binding of extracellular ligands such as growth factors, cytokines and hormones to their cell-surface receptors activates RAS and this initiates RAF1 activation. RAF1 then further activates the dual-specificity protein kinases MAP2K1/MEK1 and MAP2K2/MEK2. Both MAP2K1/MEK1 and MAP2K2/MEK2 function specifically in the MAPK/ERK cascade, and catalyze the concomitant phosphorylation of a threonine and a tyrosine residue in a Thr-Glu-Tyr sequence located in the extracellular signal-regulated kinases MAPK3/ERK1 and MAPK1/ERK2, leading to their activation and further transduction of the signal within the MAPK/ERK cascade. Depending on the cellular context, this pathway mediates diverse biological functions such as cell growth, adhesion, survival and differentiation, predominantly through the regulation of transcription, metabolism and cytoskeletal rearrangements. One target of the MAPK/ERK cascade is peroxisome proliferator-activated receptor gamma (PPARG), a nuclear receptor that promotes differentiation and apoptosis. MAP2K1/MEK1 has been shown to export PPARG from the nucleus. The MAPK/ERK cascade is also involved in the regulation of endosomal dynamics, including lysosome processing and endosome cycling through the perinuclear recycling compartment (PNRC), as well as in the fragmentation of the Golgi apparatus during mitosis.
Pfam Domain Function
Transmembrane RegionsNot Available
GenBank Protein ID188569
UniProtKB IDQ02750
UniProtKB Entry NameMP2K1_HUMAN
Cellular LocationCytoplasm
Gene sequence
>lcl|BSEQ0016235|Dual specificity mitogen-activated protein kinase kinase 1 (MAP2K1)
ATGCCCAAGAAGAAGCCGACGCCCATCCAGCTGAACCCGGCCCCCGACGGCTCTGCAGTT
AACGGGACCAGCTCTGCGGAGACCAACTTGGAGGCCTTGCAGAAGAAGCTGGAGGAGCTA
GAGCTTGATGAGCAGCAGCGAAAGCGCCTTGAGGCCTTTCTTACCCAGAAGCAGAAGGTG
GGAGAACTGAAGGATGACGACTTTGAGAAGATCAGTGAGCTGGGGGCTGGCAATGGCGGT
GTGGTGTTCAAGGTCTCCCACAAGCCTTCTGGCCTGGTCATGGCCAGAAAGCTAATTCAT
CTGGAGATCAAACCCGCAATCCGGAACCAGATCATAAGGGAGCTGCAGGTTCTGCATGAG
TGCAACTCTCCGTACATCGTGGGCTTCTATGGTGCGTTCTACAGCGATGGCGAGATCAGT
ATCTGCATGGAGCACATGGATGGAGGTTCTCTGGATCAAGTCCTGAAGAAAGCTGGAAGA
ATTCCTGAACAAATTTTAGGAAAAGTTAGCATTGCTGTAATAAAAGGCCTGACATATCTG
AGGGAGAAGCACAAGATCATGCACAGAGATGTCAAGCCCTCCAACATCCTAGTCAACTCC
CGTGGGGAGATCAAGCTCTGTGACTTTGGGGTCAGCGGGCAGCTCATCGACTCCATGGCC
AACTCCTTCGTGGGCACAAGGTCCTACATGTCGCCAGAAAGACTCCAGGGGACTCATTAC
TCTGTGCAGTCAGACATCTGGAGCATGGGACTGTCTCTGGTAGAGATGGCGGTTGGGAGG
TATCCCATCCCTCCTCCAGATGCCAAGGAGCTGGAGCTGATGTTTGGGTGCCAGGTGGAA
GGAGATGCGGCTGAGACCCCACCCAGGCCAAGGACCCCCGGGAGGCCCCTTAGCTCATAC
GGAATGGACAGCCGACCTCCCATGGCAATTTTTGAGTTGTTGGATTACATAGTCAACGAG
CCTCCTCCAAAACTGCCCAGTGGAGTGTTCAGTCTGGAATTTCAAGATTTTGTGAATAAA
TGCTTAATAAAAAACCCCGCAGAGAGAGCAGATTTGAAGCAACTCATGGTTCATGCTTTT
ATCAAGAGATCTGATGCTGAGGAAGTGGATTTTGCAGGTTGGCTCTGCTCCACCATCGGC
CTTAACCAGCCCAGCACACCAACCCATGCTGCTGGCGTCTAA
GenBank Gene IDL05624
GeneCard IDNot Available
GenAtlas IDMAP2K1
HGNC IDHGNC:6840
Chromosome Location15
Locus15q22.1-q22.33
References
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