Ring finger protein 122 (RNF122)

Ring finger protein 122 is an E3 ubiquitin-protein ligase encoded by the RNF122 gene in humans[1][7][8][9]. It contains a RING finger motif characteristic of proteins mediating protein-protein and protein-DNA interactions[1][6][7]. RNF122 is primarily localized to the endoplasmic reticulum and Golgi apparatus[7]. Its molecular function involves ubiquitin-protein ligase activity, contributing to the regulation of protein degradation pathways[9]. RNF122 may induce necrosis and apoptosis, suggesting a role in controlling cell viability[5][7][9]. Evidence links RNF122 to the regulation of the cell cycle and cell proliferation and implicates it in various diseases, including cancer—most notably in promoting glioblastoma growth through the JAK2/STAT3/c-Myc signaling axis[4][8]. As a member of the RING finger E3 ubiquitin ligase family, it is broadly involved in cellular homeostasis and immune responses, and its dysfunction has been implicated in cancer, neurodegenerative, autoimmune, and infectious diseases[3]. No currently approved drugs are specifically known to interact with RNF122, and no biomarkers for patient stratification or efficacy monitoring are established. Safety and therapeutic targeting concerns remain largely theoretical at this stage, based on its involvement in fundamental cell death and survival pathways.

Other names

RNF122

Inhibition of protein function via ubiquitination and proteasomal degradation