PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
680727-6	1978	The failure of dealkylative nitrosation reactions in the latter tetracyclines is explained by the formation of intramolecular hydrogen bridge linkages between epidimethylamino groups at C-4 and OH groups at C-6.	Tetracyclines	64-77	complement C6	Homo sapiens	207-210	
12019978-5	2002	Protonated tetracyclines dissociate initially by loss of H2O (D2O) and NH3 (ND3) if there is a tertiary OH at C-6.	Tetracyclines	11-24	complement C6	Homo sapiens	110-113	
12019978-7	2002	Tetracyclines without the tertiary OH at C-6 lose only NH3 (ND3) initially.	Tetracyclines	0-13	complement C6	Homo sapiens	41-44