Automated description from the Alliance of Genome Resources (Release 5.3.0)
Enables lysine-acetylated histone binding activity and peptidase activator activity. Involved in DNA repair; proteasomal ubiquitin-independent protein catabolic process; and sperm DNA condensation. Located in cytosol and nucleus. Part of spermatoproteasome complex. Is expressed in craniocervical region bone; ganglia; sensory organ; and submandibular gland primordium. Used to study visceral heterotaxy. Orthologous to human PSME4 (proteasome activator subunit 4).