E3 ubiquitin-protein ligase which accepts ubiquitin from E2 ubiquitin-conjugating enzymes UBE2L3 and UBE2L6 in the form of a thioester and then directly transfers the ubiquitin to targeted substrates such as LCMT2, thereby promoting their degradation. Induces apoptosis via a p53/TP53-dependent but caspase-independent mechanism. However, its overexpression also produces a decrease of the ubiquitin-dependent stability of BAX, a pro-apoptotic protein, ultimately leading to protection of cell death; But, it is not an anti-apoptotic protein per se.
Protein Aliases: E3 ubiquitin-protein ligase RNF144B; IBR domain containing 2; IBR domain-containing protein 2; p53-inducible RING finger protein; RING finger protein 144B
Gene Aliases: bA528A10.3; IBRDC2; P53RFP; PIR2; RNF144B
UniProt ID: (Human) Q7Z419
Entrez Gene ID: (Human) 255488
Molecular Function: ubiquitin-protein ligase