PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
16939202-3	2006	The folding of cytochrome b(562), a four-helix-bundle heme protein, is hampered by heme dissociation.	Heme	54-58	mitochondrially encoded cytochrome b	Homo sapiens	15-27	
16939202-4	2006	To overcome this complication, we have engineered a variant of cytochrome b(562) (cyt c-b(562)) featuring a c-type linkage between the heme and the polypeptide chain.	Heme	135-139	mitochondrially encoded cytochrome b	Homo sapiens	63-75