PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 2442049-5 1987 The fraction of [35S]cysteine- labeled protamine 1 translation product was compared with the fraction of testis poly(A)+ mRNA as protamine 1 mRNA which we measured in dot blots with the use of an SP6 RNA polymerase transcript for protamine 1. Cysteine 21-29 protamine 1 Mus musculus 39-50