DomainThe RING-type zinc finger domain is required for E3 ligase activity.
Post-translational modificationsUbiquitinated; undergoes 'Lys-48'-linked autoubiquitination in the absence of growth factors and MAP3K1-induced 'Lys-63'-linked polyubiquitination. 'Lys-48'-autoubiquitination leads to degradation by the proteasome, while MAP3K1-induced 'Lys-63'-linked polyubiquitination results in the stabilization of the protein. 'Lys-48'- and 'Lys-63'-linked polyubiquitinations occur most probably on the same 3 C-terminal lysine residues (Lys-195, Lys-223 and Lys-224) and are thus mutually exclusive. Other sites of ubiquitination are not excluded. Arginine methylation by PRMT1 stabilizes RNF187 by facilitating K63-linked ubiquitin chain formation, and enables dimerization, c-Jun interaction and subsequent AP1 target gene expression.
Cellular localizationCytoplasm. Nucleus. Predominantly located in the cytoplasm. Shuttles between the cytoplasm and the nucleus.