FEATURES

FAMILY

DESCRIPTION

Also known as PELI1_HUMAN, PELI1, PRISM. E3 ubiquitin ligase catalyzing the covalent attachment of ubiquitin moieties onto substrate proteins. Involved in the TLR and IL-1 signaling pathways via interaction with the complex containing IRAK kinases and TRAF6. Mediates 'Lys-63'-linked polyubiquitination of IRAK1 allowing subsequent NF-kappa-B activation (PubMed:12496252, PubMed:17675297). Mediates 'Lys-48'-linked polyubiquitination of RIPK3 leading to its subsequent proteasome-dependent degradation; preferentially recognizes and mediates the degradation of the 'Thr-182' phosphorylated form of RIPK3 (PubMed:29883609). Negatively regulates necroptosis by reducing RIPK3 expression (PubMed:29883609). Mediates 'Lys-63'-linked ubiquitination of RIPK1 (PubMed:29883609). Interacts with MAP3K7. Upon IL1B treatment, forms a complex with TRAF6, IRAK1, IRAK4 and MYD88; this complex recruits MAP3K7/TAK1, TAB1 and TAB2 to mediate NF-kappa-B activation. Direct binding of SMAD6 to PELI1 prevents the complex formation and hence negatively regulates IL1R-TLR signaling and eventually NF-kappa-B-mediated gene expression (PubMed:12496252, PubMed:12804775, PubMed:16951688). Interacts (via atypical FHA domain) with RIPK3; preferentially binds to the 'Thr-182' phosphorylated form of RIPK3 (PubMed:29883609). Interacts with RIPK1 and IRAK1 (PubMed:29883609).

EXTERNAL LINKS

PELI1

E3 ubiquitin-protein ligase pellino homolog 1

PELI1

Molecular Synopsis