Source:http://linkedlifedata.com/resource/umls/id/C0002511
GO: The modification of an amino acid to an active form, for incorporation into a peptide, protein or other macromolecule. [GOC:jl],MSH: A reaction that produces an "activated" amino acid derivative, such as amino acyl adenylate, or amino acylphosphorylate and provides energy for the amino acid to be incorporated into a peptide, protein, or other macromolecule.