Converts amino acid one-letter abbreviations to three-letter codes, e.g., L to Leu. The accepted codes in the input include the 20 standard amino acids and also B (Asparagine or Aspartic acid), converted to Asx, and Z (Glutamine or Glutamic acid) converted to Glx.
A character vector of one-letter amino acid codes, e.g.
A character vector of three-letter amino acid codes, e.g.
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# Convert S to Ser, R to Arg and P to Pro. as_three_letter(c('S', 'R', 'P')) # The function `as_three_letter()` is case insensitive on the input but will # always return the three-letter codes with the first letter in uppercase. as_three_letter(c('S', 's', 'p', 'P')) # Convert also special case codes B (Asparagine or Aspartic acid) and Z # (Glutamine or Glutamic acid) as_three_letter(c('B', 'Z')) # Invalid codes in the input are converted to NA. # "S" is correctly mapped to "Ser" but "Ser" and "Serine" are not # one-letter amino acid codes and are therefore converted to NA. as_three_letter(c('S', 's', 'Ser', 'Serine'))
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