The SCF(SKP2) E3 ubiquitin ligase complex polyubiquitinates RUNX2 on unknown lysine residues, targeting it for proteasome-mediated degradation. SKP2-triggered RUNX2 degradation negatively regulates osteogenesis by inhibiting differentiation of osteoblasts (Thacker et al. 2016). This process is inhibited by glucose uptake in osteoblasts (Wei et al. 2015).
Pessin, JE, Wei, J, Lezaki, T, Hinoi, E, Shimazu, J, Kajimura, D, Karsenty, G, Zong, H, Maurizi, A, Makinistoglu, MP, Takarada, T
Khan, MP, Kumar, Y, Trivedi, AK, Kanaujiya, JK, Kapoor, I, Sanyal, S, Thacker, G, Chattopadhyay, N, Lochab, S, Ahmed, S, Shukla, N
ubiquitin protein ligase activity of RUNX2:SCF(SKP2) [nucleoplasm]
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