PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
22121121-7	2012	In low moisture content aprotic solvents, vitamin K (a quinone) is reduced in two one-electron chemically reversible steps to form first a radical anion (semiquinone, at E(1)) and then at more negative potentials a dianion is formed (at E(2)).	quinone	55-62	small nucleolar RNA, H/ACA box 73A	Homo sapiens	170-174