Single-letter amino acid naming convention.

A vector containing amino acid names with all letters capitalized, (no glycine, but includes the oxidized cystine), they are: "A", "B", "C", "D", "E", "F", "H", "I", "K", "L", "M", "N", "P", "Q", "R", "S", "T", "V", "W", "Y".

aaCodes1Letter20

Format

A vector of 20 elements.