| aa seq | amino acid sequence |
|---|---|
| AIR | amino-imidazole ribonucleotide; average impairment rating |
| AMPA | alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionate; American Medical Publishers Association |
| AOAA | amino-oxyacetic acid |
| Asx | amino acid that gives aspartic acid after hydrolysis; asymptomatic |