Predicted to enable several functions, including linear polyubiquitin binding activity; polyubiquitin modification-dependent protein binding activity; and ubiquitin protein ligase binding activity. Predicted to be involved in several processes, including cell surface receptor signaling pathway; positive regulation of NF-kappaB transcription factor activity; and protein linear polyubiquitination. Predicted to act upstream of or within negative regulation of necroptotic process. Predicted to be located in cytoplasmic side of plasma membrane and cytosol. Predicted to be part of CD40 receptor complex and LUBAC complex. Orthologous to human RNF31 (ring finger protein 31). [provided by Alliance of Genome Resources, Apr 2022]