PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
12904077-1	2003	It has been shown by extensive studies that alpha-MSH bioactivity is critically dependent on the core or central tetrapeptide sequence, His-Phe-Arg-Trp, however with poor selectivity for the human MC3R-MC5R.	Histidine	136-139	proopiomelanocortin	Homo sapiens	44-53