Predicted to enable RNA polymerase II-specific DNA-binding transcription factor binding activity and histone binding activity. Predicted to contribute to nucleosome binding activity. Predicted to be involved in DNA replication-independent chromatin assembly. Predicted to act upstream of or within gastrulation; muscle cell differentiation; and osteoblast differentiation. Predicted to be located in chromatin and nucleoplasm. Predicted to be part of HIR complex. Orthologous to human HIRA (histone cell cycle regulator). [provided by Alliance of Genome Resources, Apr 2022]