>2friX (X:) observed residues (from ATOM records)
glsdgewqqvlnvwgkveadiaghgqevlirlftghpetlekfdkfkhlkteaemkased
lkkhgtvvltalggilkkkghheaelkplaqshatkhkipikylefisdaiihvlhskhp
gdfgadaqgamtkalelfrndiaakykelgfq