Three Letter Sequence Converter Tool
Use the tool below to get your one-letter code.
Paste your 3 letter code here (hyphen delimited)
Your one letter code
Combinatorial 3-Positional Scan
Positional scanning is an important tool for peptide sequence optimization. Three position combinatorial scanning identifies amino acids of interest at three given positions and substitutes them with all other natural amino acids one at a time. Increases in activity will identify the preferred amino acid residues at these positions.
Please input your protein or peptide sequence
below as well as the position of the three amino acids to be substituted, counting from the N-Terminus. A total of 20 x 20 x 20 = 8000 sequences will be generated.
Peptide Sequence (25 amino acids max)
3 letter converter
Position of residue(s) to be replaced (from Nterm)