PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
12693958-0	2003	Covalent heme binding to CYP4B1 via Glu310 and a carbocation porphyrin intermediate.	carbocation porphyrin	49-70	cytochrome P450 4B1	Oryctolagus cuniculus	25-31