PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
7449761-0	1980	Direct enzyme titration curve of NADH: cytochrome b5 reductase by combined isoelectric focusing/electrophoresis.	NAD	33-37	cytochrome b5 type A	Homo sapiens	39-52	
7449761-2	1980	Methemoglobin reduction in human red cells involves successively an electron transport from NADH to a soluble form of cytochrome b5 (step 1) and from cytochrome b5 to methemoglobin (step 2).	NAD	92-96	cytochrome b5 type A	Homo sapiens	118-131	
7449761-3	1980	Step 1 is catalysed by an enzyme, soluble NADH:cytochrome b5 reductase (EC 1.6.2.2).	NAD	42-46	cytochrome b5 type A	Homo sapiens	47-60