Positional Scan
A random library is an indispensable tool for sequence optimization. It has the ability to generate alternative peptides that could have the potential for enhanced activity. Selected residues are randomly and simultaneously substituted with all of the other 20 natural amino acids via a shotgun approach. Our random library fabricates as many sequence variations as possible within the selected amino acid residues, allowing for the design and identification of novel and highly-active peptide sequences.

Special Instructions
Please input your protein or peptide sequence in one-letter below as well as the position(s) of the amino acid to be substituted, counting from the N-Terminus. A total of 20 sequences will be generated for each positional replacement.

Peptide Sequence (25 amino acids max)    3 letter converter
Position of residue(s) to be replaced (from Nterm)
Please separate numbers out using semi-colons (;)
Generate Peptides