PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 1191255-4 1975 Studies of the effects on the reaction of activators of acrosin (Ca2+, water-miscible solvents) showed that titrations carried out in barbiturate buffer containing 1M-CaCl2 and diluted with 0.2 vol. barbituric acid 134-145 acrosin Homo sapiens 56-63 1191255-3 1975 Titration in sodium barbiturate buffer of acrosin, a serine proteinase from sperm acrosomes, with the ester substrate 4-methylumbelliferyl p-guanidinobenzoate gave rise to an incomplete "burst" of 4-methylumbelliferone. barbituric acid 13-31 acrosin Homo sapiens 42-49