The product formed by the condensation of the acyl radical of an amino acid and adenosine 5′-monophosphate (originally in the form of adenosine 5′-triphosphate, with elimination of a pyrophosphoric group). Formed in the first step of protein biosynthesis. SYN: activated amino acid.
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an amino acid residue linked via an acid anhydride bond to the 5′ phosphate of adenosine monophosphate; it is a high energy intermediate in the synthesis of aminoacyl-tRNA.Medical dictionary. 2011.