PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 776964-2 1976 Native tryptophanyl-tRNA synthetase purified from Escherichia coli B has on each identical subunit a single thiol group which rapidly forms a mixed disulfide with a thionitrobenzoate moiety of 5,5"-dithiobis(2-nitrobenzoic acid). thionitrobenzoic acid 165-182 tryptophanyl-tRNA synthetase 1 Homo sapiens 7-35