Article · Wikipedia archive · Last revised May 29, 2026

MAP2K2

Dual specificity mitogen-activated protein kinase kinase 2 is an enzyme that in humans is encoded by the MAP2K2 gene. It is more commonly known as MEK2, but has many alternative names including CFC4, MKK2, MAPKK2 and PRKMK2.

Last revised
May 29, 2026
Read time
≈ 6 min
Length
1,273 w
Citations
15
Source
MAP2K2
Available structures
PDBOrtholog search: PDBe RCSB
Identifiers
AliasesMAP2K2, CFC4, MAPKK2, MEK2, MKK2, PRKMK2, mitogen-activated protein kinase kinase 2
External IDsOMIM: 601263; MGI: 1346867; HomoloGene: 48591; GeneCards: MAP2K2; OMA:MAP2K2 - orthologs
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

NM_030662

NM_023138
NM_001347144
NM_001358539

RefSeq (protein)

NP_109587

NP_001334073
NP_075627
NP_001345468

Location (UCSC)Chr 19: 4.09 – 4.12 MbChr 10: 80.94 – 80.97 Mb
PubMed search34
Wikidata
View/Edit HumanView/Edit Mouse

Dual specificity mitogen-activated protein kinase kinase 2 is an enzyme that in humans is encoded by the MAP2K2 gene.5 It is more commonly known as MEK2, but has many alternative names including CFC4, MKK2, MAPKK2 and PRKMK2.6

Function

The protein encoded by this gene is a dual specificity protein kinase that belongs to the MAP kinase kinase family. This kinase is known to play a critical role in mitogen growth factor signal transduction. It phosphorylates and thus activates MAPK1/ERK2 and MAPK3/ERK1.

The activation of this kinase itself is dependent on the Ser/Thr phosphorylation by MAP kinase kinase kinases.

The inhibition or degradation of this kinase is found to be involved in the pathogenesis of Yersinia and anthrax.7

Interactions

MAP2K2 has been shown to interact with MAPK38910 and ARAF.11

References

References

  1. GRCh38: Ensembl release 89: ENSG00000126934Ensembl, May 2017
  2. GRCm38: Ensembl release 89: ENSMUSG00000035027Ensembl, May 2017
  3. "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  4. "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  5. Zheng CF, Guan KL (Jun 1993). "Cloning and characterization of two distinct human extracellular signal-regulated kinase activator kinases, MEK1 and MEK2". J Biol Chem. 268 (15): 11435–9. doi:10.1016/S0021-9258(18)82142-1. PMID 8388392.
  6. "MAP2K2 mitogen-activated protein kinase kinase 2 [Homo sapiens (human)] - Gene - NCBI". www.ncbi.nlm.nih.gov. Retrieved 2015-10-16.
  7. "Entrez Gene: MAP2K2 mitogen-activated protein kinase kinase 2".
  8. Marti A, Luo Z, Cunningham C, Ohta Y, Hartwig J, Stossel T P, Kyriakis J M, Avruch J (Jan 1997). "Actin-binding protein-280 binds the stress-activated protein kinase (SAPK) activator SEK-1 and is required for tumor necrosis factor-alpha activation of SAPK in melanoma cells". J. Biol. Chem. 272 (5). UNITED STATES: 2620–8. doi:10.1074/jbc.272.5.2620. ISSN 0021-9258. PMID 9006895.
  9. Butch ER, Guan K L (Feb 1996). "Characterization of ERK1 activation site mutants and the effect on recognition by MEK1 and MEK2". J. Biol. Chem. 271 (8). UNITED STATES: 4230–5. doi:10.1074/jbc.271.8.4230. ISSN 0021-9258. PMID 8626767.
  10. Zheng CF, Guan K L (Nov 1993). "Properties of MEKs, the kinases that phosphorylate and activate the extracellular signal-regulated kinases". J. Biol. Chem. 268 (32). UNITED STATES: 23933–9. doi:10.1016/S0021-9258(20)80474-8. ISSN 0021-9258. PMID 8226933.
  11. Yin XL, Chen She, Yan Jun, Hu Yun, Gu Jian X (Feb 2002). "Identification of interaction between MEK2 and A-Raf-1". Biochim. Biophys. Acta. 1589 (1). Netherlands: 71–6. doi:10.1016/S0167-4889(01)00188-4. ISSN 0006-3002. PMID 11909642.
Further reading

Further reading

External links