Hi there I have got a problem that
symbol exists at the end of peptide sequence like this (CRLLKPLLC
) as shown in figure . I try to select the active residue of peptide as i want to make a protein - peptide docking using HADDOCK 2.4 web server. I don’t know what does this mean ? Is it a problem in peptide pdb file ? But I’ve checked it for errors and I didn’t find any error.

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