>2z69B (B:) observed residues (from ATOM records)
mefqrvhqqllqshhlfeplspvqlqellassdlvnldkgayvfrqgepahafyylisgc
vkiyrltpegqekilevtnerntfaeammfmdtpnyvataqavvpsqlfrfsnkaylrql
qdntplalallaklstrlhqrideietlsl