PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
17726052-3	2007	Tryptophanyl-tRNA synthetase is a class I aaRS that catalyzes tryptophan activation in the absence of its cognate tRNA.	Tryptophan	62-72	alanyl-tRNA synthetase 1	Homo sapiens	42-46	
25791872-0	2015	Ancestral Reconstruction of a Pre-LUCA Aminoacyl-tRNA Synthetase Ancestor Supports the Late Addition of Trp to the Genetic Code.	Tryptophan	104-107	alanyl-tRNA synthetase 1	Homo sapiens	39-64	
25791872-7	2015	This is consistent with the paralog ancestor being specific for the utilization of Tyr, with Trp being a subsequent addition to the genetic code facilitated by a process of aaRS divergence and neofunctionalization.	Tryptophan	93-96	alanyl-tRNA synthetase 1	Homo sapiens	173-177