PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
4131279-5	1974	The data indicate that J chain is attached to alpha chain(s) through the penultimate cysteine residue of the C-terminal octapeptide.	octapeptide	120-131	joining chain of multimeric IgA and IgM	Homo sapiens	23-30