All 20 Amino Acids Chart (Free high-quality PDF download) Type Abbreviation Format Single letter abbreviation File to download Double-sided Ala A Non-sided Arg R If you have any questions or would like to share your reviews on the Amino acid, then comment down below. I would love to hear what you have to think. You Might Also Like N-terminal vs C-terminal of an Amino Acid November 9, 2019 How to use a pKa table November 14, 2019 Leave a Reply Cancel replyCommentEnter your name or username to comment Enter your email address to comment Enter your website URL (optional) Save my name, email, and website in this browser for the next time I comment. Δ