FEATURES

FAMILY

DESCRIPTION

Also known as RNF31_HUMAN, RNF31, ZIBRA. E3 ubiquitin-protein ligase component of the LUBAC complex which conjugates linear ('Met-1'-linked) polyubiquitin chains to substrates and plays a key role in NF-kappa-B activation and regulation of inflammation (PubMed:17006537, PubMed:19136968, PubMed:20005846, PubMed:21455173, PubMed:21455180, PubMed:21455181, PubMed:22863777, PubMed:28189684). LUBAC conjugates linear polyubiquitin to IKBKG and RIPK1 and is involved in activation of the canonical NF-kappa-B and the JNK signaling pathways (PubMed:17006537, PubMed:19136968, PubMed:20005846, PubMed:21455173, PubMed:21455180, PubMed:21455181, PubMed:22863777, PubMed:28189684). Linear ubiquitination mediated by the LUBAC complex interferes with TNF-induced cell death and thereby prevents inflammation (PubMed:21455173, PubMed:28189684). LUBAC is recruited to the TNF-R1 signaling complex (TNF-RSC) following polyubiquitination of TNF-RSC components by BIRC2 and/or BIRC3 and to conjugate linear polyubiquitin to IKBKG and possibly other components contributing to the stability of the complex (PubMed:20005846, PubMed:27458237). Together with OTULIN, the LUBAC complex regulates the canonical Wnt signaling during angiogenesis (PubMed:23708998). RNF31 is required for linear ubiquitination of BCL10, thereby promoting TCR-induced NF-kappa-B activation (PubMed:27777308). Binds polyubiquitin of different linkage types (PubMed:23708998). Component of the LUBAC complex (linear ubiquitin chain assembly complex) which consists of SHARPIN, RBCK1 and RNF31 (PubMed:17006537, PubMed:21455173, PubMed:21455180, PubMed:21455181). LUBAC has a MW of approximately 600 kDa suggesting a heteromultimeric assembly of its subunits (PubMed:17006537, PubMed:21455173, PubMed:21455180, PubMed:21455181). Associates with the TNF-R1 signaling complex (TNF-RSC) in a stimulation-dependent manner (PubMed:20005846). Interacts (via the PUB domain) with OTULIN (via the PIM motif); the interaction is direct (PubMed:23708998, PubMed:24726323, PubMed:24726327). Interacts (via the PUB domain) with VCP (via the PIM motif) (PubMed:24726327). Interacts (via the PUB domain) with SPATA2 (via the PIM motif); interaction is direct and bridges RNF31 and CYLD (PubMed:27458237, PubMed:27545878, PubMed:28189684, PubMed:27591049). Interacts with CYLD; the interaction is indirect and is mediated via SPATA2 (PubMed:27458237, PubMed:27545878, PubMed:26997266). Interacts with MUSK (By similarity). Interacts with CARD11, promoting linear ubiquitination of BCL10 (PubMed:27777308).

EXTERNAL LINKS

RNF31

E3 ubiquitin-protein ligase RNF31

RNF31

Molecular Synopsis