>1xchA (A:) SEQRES residues glsdgewqqvlnvwgkveadiaghgqevlirlftghpetlekfdkfkhlkteaemkased lkkhgtvvltalggilkkkghheaelkplaqshatkhkipikynefisdaiihvlhskhp gdfgadaqgamtkalelfrndiaakykelgfqg