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The 20 amino acids that are encoded directly by the codons of the universal genetic code.

Usage

amino_acids(code = c("one_letter", "three_letter"))

Arguments

code

The type of amino acid symbol to be returned, one-letter (`one_letter`) or three-letter (`three_letter`) codes.

Value

A character vector of the 20 standard amino acids.

Examples

# By default `amino_acids` returns one-letter symbols
amino_acids()
#>  [1] "S" "R" "L" "P" "T" "A" "V" "G" "I" "F" "Y" "C" "H" "Q" "N" "K" "D" "E" "M"
#> [20] "W"

# Use code = 'three_letter' instead for three-letter symbols
amino_acids(code = 'three_letter')
#>  [1] "Ser" "Arg" "Leu" "Pro" "Thr" "Ala" "Val" "Gly" "Ile" "Phe" "Tyr" "Cys"
#> [13] "His" "Gln" "Asn" "Lys" "Asp" "Glu" "Met" "Trp"