PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 2029538-1 1991 The technique of fluorescence quenching by the non-ionic quenchers acrylamide and nicotinamide has been used to probe the accessibility of the environmentally sensitive N-(bromoacetyl)-N"-(1-sulpho-5-naphthyl) ethylenediamine (1,5-Br-AEDANS) fluorophore attached to either Cys-177 of the A1-light chain or the SH1 thiol (Cys-707) of the myosin subfragment (S1) heavy chain. Acrylamide 67-77 myosin heavy chain 14 Homo sapiens 337-343