Enables polyubiquitin modification-dependent protein binding activity. Involved in several processes, including MyD88-dependent toll-like receptor signaling pathway; negative regulation of I-kappaB kinase/NF-kappaB signaling; and positive regulation of inflammatory response. Located in cytoplasm. Is expressed in several structures, including alimentary system; brain; cardiovascular system; genitourinary system; and immune system. Orthologous to human TNIP1 (TNFAIP3 interacting protein 1). [provided by Alliance of Genome Resources, Apr 2022]