Match the amino acids to their appropriate three-letter codes. Remember, four of our amino acids don't follow the common trend of using the first three letters of their name. The way we remember this is by imagining asparagine chilling on three tropical islands. These islands represent the four amino acids that don't follow the first three letters in terms of their three-letter code. In this method, asparagine would be identified with the code ASN. Glutamine is GLN. Isoleucine, which is another exception, uses the code ILE. Tryptophan is abbreviated as TRP, not TRIP.
The remaining amino acids follow the first three letters of their name to form their three-letter codes. For example, glutamate would be GLU, and leucine would be LEU. This is how we match each of the amino acids to their appropriate three-letter codes.
