E3 ubiquitin-protein ligase that plays a role in the limitation of the innate immune response (PubMed:21474709, PubMed:29117565). Mediates inhibition of the RLR signaling pathway by ubiquitinating RIGI and IFIH1 receptors, leading to their proteasomal degradation (PubMed:21474709). Also promotes the neddylation of IKBKG/NEMO, stabilizing NFKBIA, and thereby inhibiting of NF-kappa-B nuclear translocation and activation (PubMed:21474709). . This is the function of TRIM40 (tripartite motif containing 40, Ensembl gene identifier ENSG00000204614).