Biology:MAP3K2

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Short description: Protein-coding gene in the species Homo sapiens


A representation of the 3D structure of the protein myoglobin showing turquoise α-helices.
Generic protein structure example

Mitogen-Activated Protein Kinase Kinase Kinase 2 also known as MEKK2 (MEK/ERK Kinase 2) is an enzyme that in humans is encoded by the MAP3K2 gene.[1][2][3]

Function

The protein encoded by this gene is a member of serine/threonine protein kinase family. This kinase preferentially activates other kinases involved in the MAP kinase signaling pathway. This kinase has been shown to directly phosphorylate and activate IkappaB kinases, and thus plays a role in NF-kappa B signaling pathway. This kinase has also been found to bind and activate protein kinase C-related kinase 2, which suggests its involvement in a regulated signaling process.[3]

Activation

MEKK2 is activated through homodimerization and subsequent trans-autophosphorylation at MEKK2-S519.[4][5]

MEKK2 is regulated by 14-3-3 proteins which bind to MEKK2-phosphoT283.[6]

MEKK2 is regulated by SMYD3 which binds and methylates MEKK2-K260.[7]

Interactions

MAP3K2 has been shown to interact with:


References

  1. "Molecular cloning of mitogen-activated protein/ERK kinase kinases (MEKK) 2 and 3. Regulation of sequential phosphorylation pathways involving mitogen-activated protein kinase and c-Jun kinase". The Journal of Biological Chemistry 271 (10): 5361–8. Mar 1996. doi:10.1074/jbc.271.10.5361. PMID 8621389. 
  2. "Mitogen-activated protein kinase/ERK kinase kinases 2 and 3 activate nuclear factor-kappaB through IkappaB kinase-alpha and IkappaB kinase-beta". The Journal of Biological Chemistry 274 (13): 8355–8. Mar 1999. doi:10.1074/jbc.274.13.8355. PMID 10085062. 
  3. 3.0 3.1 "Entrez Gene: MAP3K2 mitogen-activated protein kinase kinase kinase 2". https://www.ncbi.nlm.nih.gov/sites/entrez?Db=gene&Cmd=ShowDetailView&TermToSearch=10746. 
  4. Cheng, Jinke; Yu, Ling; Zhang, Dongyu; Huang, Qiaojia; Spencer, David; Su, Bing (2005-04-08). "Dimerization through the Catalytic Domain Is Essential for MEKK2 Activation" (in en). Journal of Biological Chemistry 280 (14): 13477–13482. doi:10.1074/jbc.M414258200. ISSN 0021-9258. PMID 15695508. 
  5. Zhang, Dongyu; Facchinetti, Valeria; Wang, Xiaofang; Huang, Qiaojia; Qin, Jun; Su, Bing (2006-01-11). "Identification of MEKK2/3 serine phosphorylation site targeted by the Toll-like receptor and stress pathways". The EMBO Journal 25 (1): 97–107. doi:10.1038/sj.emboj.7600913. ISSN 0261-4189. PMID 16362041. 
  6. Matitau, Adi E.; Gabor, Timothy V.; Gill, R. Montgomery; Scheid, Michael P. (2013-09-27). "MEKK2 kinase association with 14-3-3 protein regulates activation of c-Jun N-terminal kinase". The Journal of Biological Chemistry 288 (39): 28293–28302. doi:10.1074/jbc.M113.511352. ISSN 1083-351X. PMID 23963453. 
  7. 7.0 7.1 Mazur, Pawel K.; Reynoird, Nicolas; Khatri, Purvesh; Jansen, Pascal W. T. C.; Wilkinson, Alex W.; Liu, Shichong; Barbash, Olena; Van Aller, Glenn S. et al. (June 2014). "SMYD3 links lysine methylation of MAP3K2 to Ras-driven cancer" (in en). Nature 510 (7504): 283–287. doi:10.1038/nature13320. ISSN 1476-4687. PMID 24847881. Bibcode2014Natur.510..283M. 
  8. 8.0 8.1 "Synergistic interaction of MEK kinase 2, c-Jun N-terminal kinase (JNK) kinase 2, and JNK1 results in efficient and specific JNK1 activation". Molecular and Cellular Biology 20 (7): 2334–42. Apr 2000. doi:10.1128/mcb.20.7.2334-2342.2000. PMID 10713157. 
  9. Deacon, K.; Blank, J. L. (1997-05-30). "Characterization of the mitogen-activated protein kinase kinase 4 (MKK4)/c-Jun NH2-terminal kinase 1 and MKK3/p38 pathways regulated by MEK kinases 2 and 3. MEK kinase 3 activates MKK3 but does not cause activation of p38 kinase in vivo". The Journal of Biological Chemistry 272 (22): 14489–14496. doi:10.1074/jbc.272.22.14489. ISSN 0021-9258. PMID 9162092. 
  10. 10.0 10.1 "MEKK2 associates with the adapter protein Lad/RIBP and regulates the MEK5-BMK1/ERK5 pathway". The Journal of Biological Chemistry 276 (7): 5093–100. Feb 2001. doi:10.1074/jbc.M003719200. PMID 11073940. 
  11. Fanger, Gary R.; Widmann, Christian; Porter, Amy C.; Sather, Sue; Johnson, Gary L.; Vaillancourt, Richard R. (1998-02-06). "14-3-3 Proteins Interact with Specific MEK Kinases" (in en). Journal of Biological Chemistry 273 (6): 3476–3483. doi:10.1074/jbc.273.6.3476. ISSN 0021-9258. PMID 9452471. 
  12. "XIAP regulates bi-phasic NF-kappaB induction involving physical interaction and ubiquitination of MEKK2". Cellular Signalling 20 (11): 2107–12. Nov 2008. doi:10.1016/j.cellsig.2008.08.004. PMID 18761086. 

Further reading