PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 6140953-0 1983 The competition between adenosine triphosphate and inorganic pyrophosphate for myosin and its suppression by substoichiometric actin concentrations. inorganic pyrophosphate 51-74 myosin heavy chain 14 Homo sapiens 79-85 6140953-1 1983 Inorganic pyrophosphate (PPi) inhibits not only Mg2+-ATPase activity of myosin subfragment 1 (S-1) but abolishes also the ATP-induced increment of tryptophan fluorescence of subfragment 1. inorganic pyrophosphate 0-23 myosin heavy chain 14 Homo sapiens 72-78