Scientific background: |
MAP2K6 (Mitogen-activated protein kinase kinase 6), also known as MAP kinase kinase 6 (MAPKK 6) or MAPK/ERK kinase 6 is an enzyme that in humans is encoded by the MAP2K6 gene, on chromosome 17. MAPKK 6 is a member of the dual specificity protein kinase family, which functions as a mitogen-activated protein (MAP) kinase kinase. Han et al. (1996) described experiments addressing the function of MKK6 in intracellular signaling pathways leading toward activation of p38 MAPK. Mukherjee et al. (2006) found that the Yersinia YopJ virulence factor acted as an acetyltransferase, using coenzyme A to modify critical ser and thr residues in the MAP2K6 activation loop, thereby blocking phosphorylation and kinase activation. They proposed that ser and/or thr acetylation by a bacterial effector may be a mechanism that occurs in other signaling pathways. |
References: |
1. Han, J., Lee, J.-D., Jiang, Y., Li, Z., Feng, L., Ulevitch, R. J. Characterization of the structure and function of a novel MAP kinase kinase (MKK6). J. Biol. Chem. 271: 2886-2891, 1996.
2. Mao, Z., Bonni, A., Xia, F., Nadal-Vicans, M., Greenberg, M. E. Neuronal activity-dependent cell survival mediated by transcription factor MEF2. Science 286: 785-790, 1999.
3. Mukherjee, S., Keitany, G., Li, Y., Wang, Y., Ball, H. L., Goldsmith, E. J., Orth, K. Yersinia YopJ acetylates and inhibits kinase activation by blocking phosphorylation. Science 312: 1211-1214, 2006.
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