title: Structural relationships and the classification of aminoacyl-tRNA synthetases.
authors.affiliation: Department of Biology, Massachusetts Institute of Technology, Cambridge 02139.
authors.forename: J J
authors.initials: JJ
authors.lastname: Burbaum
authors.forename: P
authors.initials: P
authors.lastname: Schimmel
mesh_terms: D000595:Amino Acid Sequence; D000604:Amino Acyl-tRNA Synthetases / Q000737:chemistry* / Q000145:classification / Q000378:metabolism; D005075:Biological Evolution; D008969:Molecular Sequence Data; D009690:Nucleic Acid Conformation; D012343:RNA, Transfer / Q000378:metabolism
chemical_list: D012343:RNA, Transfer; D000604:Amino Acyl-tRNA Synthetases