PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 2973785-1 1988 The DNA sequence dependence of the ATPase activity of RecA protein has been investigated for a variety of single strand octamer and hexadecamer homopolymers and alternating copolymers. copolymers 173-183 RAD51 recombinase Homo sapiens 54-58