This page provides an option to perform searching of peptides using BLAST algorithm based on secondary structure states of peptides. It will help in searching peptides with similar secondary structure states to the query peptide. Users need to paste their peptide secondary structure in the textbox provided below. Each secondary structures state is presented by single letter, H for helix (DSSP states: H, G, I), E for beta-strand (DSSP states: B, E), T for turn (DSSP state: S, T) and C for coil. For more information see HELP page.