>6z2cB (B:) observed residues (from ATOM records)
stsdlipapplskvplqqnfqdnqfhgkwyvvgmagngdlredkdpykmratiyelkedk
synvtwvwflpkkckyfintfvpgsqpgeftlgliksypgqtsllvrvvstnynqhamvf
fktviqnrerfyitlygrtkeltselkenfirfskslglpenhivfpvpidqcidgs