PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 3284584-0 1988 Reconstruction by site-directed mutagenesis of the transition state for the activation of tyrosine by the tyrosyl-tRNA synthetase: a mobile loop envelopes the transition state in an induced-fit mechanism. Tyrosine 90-98 tyrosyl-tRNA synthetase 1 Homo sapiens 106-129