PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
12130552-7	2002	In contrast, mutation of this tryptophan to alanine in mR2 decreased the rate of internalization and inhibited basal signaling activity.	Tryptophan	30-40	ribonucleotide reductase M2	Mus musculus	55-58