title: Human placental tryptophanyl transfer ribonucleic acid synthetase. Purification and subunit structure.
mesh_terms: D000255:Adenosine Triphosphate / Q000378:metabolism; D000604:Amino Acyl-tRNA Synthetases / Q000302:isolation & purification* / Q000378:metabolism; D001665:Binding Sites; D002250:Carbon Radioisotopes; D002499:Centrifugation, Density Gradient; D002850:Chromatography, Gel; D003902:Detergents; D011756:Diphosphates / Q000378:metabolism; D004589:Electrophoresis, Disc; D004591:Electrophoresis, Polyacrylamide Gel; D005260:Female; D006801:Humans; D007525:Isoelectric Focusing; D046911:Macromolecular Substances; D008970:Molecular Weight; D010761:Phosphorus Radioisotopes; D010920:Placenta / Q000201:enzymology*; D011247:Pregnancy; D012343:RNA, Transfer / Q000378:metabolism; D013045:Species Specificity; D014364:Tryptophan / Q000378:metabolism
chemical_list: D002250:Carbon Radioisotopes; D003902:Detergents; D011756:Diphosphates; D046911:Macromolecular Substances; D010761:Phosphorus Radioisotopes; D014364:Tryptophan; D000255:Adenosine Triphosphate; D012343:RNA, Transfer; D000604:Amino Acyl-tRNA Synthetases