PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 6226537-3 1983 The ratios HMG1/nucleosomal histone and HMG2/nucleosomal histone increased markedly at the end of spermiogenesis during the transition from nucleohistone to nucleoprotamine when nucleosomes are being disassembled. nucleohistone 140-153 high mobility group box 2 Homo sapiens 40-44