AKT1 (and possibly AKT2 and AKT3), activated in response to EGF treatment, phosphorylates MKRN1, an E3 ubiquitin ligase, on serine residue S109. AKT-mediated phosphorylation results in stabilization of MKRN1, protecting it from ubiquitination and proteasome-mediated degradation (Lee et al. 2015).
Hewitt, SM, Han, HJ, Lee, MS, Lee, C, Chung, JY, Kim, JH, Jeong, MH, Ko, A, Cho, H, Lee, HW, Song, J, Chun, KH
protein serine/threonine kinase activity of p-T,p-S-AKT [cytosol]
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