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. 2021 May 5;99(8):1033–1042. doi: 10.1007/s00109-021-02080-4

Fig. 3.

Fig. 3

Under physiological circumstances, the MAPKERK is adequately controlled by negative feedback phosphatases, in particular DUSP-6 and also DUSP-1. Epstein Barr virus (EBV)-encoded Latent Membrane Protein-1 (LMP-1) represses these phosphatases in cells with EBV latency [89]. Fingolimod activates protein serine/threonine phosphatase 2A (PP2A) [91], and this can dephosphorylate MAPKERK [92]