Question: what are the 20 amino acids?
Answer: alanine - ala - A (gif, interactive) arginine - arg - R (gif, interactive) asparagine - asn - N (gif, interactive) aspartic acid - asp - D (gif, interactive) cysteine - cys - C (gif, interactive) glutamine - gln - Q (gif, interactive) glutamic acid - glu - E (gif, interactive) glycine - gly - G (gif, interactive)