Predicted to enable DNA-binding transcription repressor activity, RNA polymerase II-specific; RNA polymerase II cis-regulatory region sequence-specific DNA binding activity; and protein homodimerization activity. Acts upstream of or within positive regulation of NF-kappaB transcription factor activity. Predicted to be located in cytosol and plasma membrane. Is expressed in several structures, including brain; gallbladder; genitourinary system; gut; and integumental system. Orthologous to human LRRFIP1 (LRR binding FLII interacting protein 1). [provided by Alliance of Genome Resources, Apr 2022]