Immunogen sequence: SGPGRSISGSI PAGRTVSNSV PGRPVSSLGP GQTVSSSGPT IKPKCTVVSE TISSKNIISR SSNGQMNGMK PPLSGYRAAQ GPQRLPFPTG YKRQREYEE Highest antigen sequence identity to the following orthologs - mouse 86%, rat 83%. Histone chaperone that stabilizes pre-exi