Fig. 4

CircRNAs regulate post-translational modification of their host genes. A Some circRNAs, such as circFoxo3, regulate the activity and degradation of host proteins by recruiting proteins to regulate the ubiquitination of host proteins. B CircRNAs, such as circ-MYBL2, regulate the activity and degradation of host proteins by directly interacting with them to regulate the phosphorylation of host proteins