title: Regulation of the biosynthesis of aminoacid: tRNA ligases and of tRNA.
mesh_terms: D000604:Amino Acyl-tRNA Synthetases / Q000096:biosynthesis* / Q000235:genetics; D002477:Cells / Q000378:metabolism*; D002874:Chromosome Mapping; D005796:Genes; D006159:Guanosine Tetraphosphate / Q000378:metabolism; D009154:Mutation; D011387:Prokaryotic Cells / Q000378:metabolism*; D012343:RNA, Transfer / Q000096:biosynthesis* / Q000235:genetics
chemical_list: D006159:Guanosine Tetraphosphate; D012343:RNA, Transfer; D000604:Amino Acyl-tRNA Synthetases