Enables chromatin binding activity. Acts upstream of or within several processes, including cellular response to hydrogen peroxide; chordate embryonic development; and negative regulation of apoptotic signaling pathway. Located in nuclear body and sex chromatin. Part of PcG protein complex. Is expressed in several structures, including adipose tissue; alimentary system; brain; eye; and genitourinary system. Orthologous to human PCGF2 (polycomb group ring finger 2). [provided by Alliance of Genome Resources, Apr 2022]