PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
11080640-2	2000	During fertilization proacrosin autoactivates to form beta-acrosin, in which there is a "light" chain cross-linked to a "heavy" chain by two disulphide bonds.	disulphide	141-151	acrosin	Homo sapiens	21-31	
8373968-3	1993	The acrosin-binding activity of the 28-kDa protein was stimulated by Ca2+, inhibited by Mg2+, and removed by disulphide bond reduction.	disulphide	109-119	acrosin	Homo sapiens	4-11