RNF26 PrEST Antigen

Protein function: E3 ubiquitin-protein ligase that plays a key role in endosome organization by retaining vesicles in the perinuclear cloud (PubMed:27368102). Acts as a platform for perinuclear positioning of the endosomal system by mediating ubiquitination of SQSTM1 (PubMed:27368102). Ubiquitinated SQSTM1 attracts specific vesicle- associated adapters, forming a molecular bridge that restrains cognate vesicles in the perinuclear region and organizes the endosomal pathway for efficient cargo transport (PubMed:27368102). Also acts as a regulator of type I interferon production in response to viral infection by mediating the formation of 'Lys-11'-linked polyubiquitin chains on TMEM173/STING, leading to stabilize TMEM173/STING (PubMed:25254379). Also required to limit type I interferon response by promoting autophagic degradation of IRF3 (PubMed:25254379). [The UniProt Consortium] Buffer: PBS and 1M Urea, pH 7.4.