PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 1420910-9 1992 The sliding velocities of actin over copolymers of modified and unmodified myosins in the motility assay were slowest with rigor-modified myosin and most rapid with SH2-labeled myosin. copolymers 37-47 myosin heavy chain 14 Homo sapiens 75-81 1420910-9 1992 The sliding velocities of actin over copolymers of modified and unmodified myosins in the motility assay were slowest with rigor-modified myosin and most rapid with SH2-labeled myosin. copolymers 37-47 myosin heavy chain 14 Homo sapiens 138-144