Tryptophanyl transfer rna synthetase ec 6.1.1 isolation and characterization of the tryptophanyl enzyme Favorova, O.O.; Kovaleva, G.K.; Moroz, S.G.; Kiselev, L.L. Molecular Biology (English Translation of Molekulyarnaya Biologiya (Moscow) 12(3 Part 1): 446-456 1978 0026-8933 https://eurekamag.com/research/027/800/027800174.php