>6bu0A (A:) observed residues (from ATOM records)
ggavklsisyrngtlfimvmhikdlvtedgadpnpyvktyllpdnhktskrktkisrktr
nptfnemlvysgysketlrqrelqlsvlsaeslrgnfflggvtlplkdfnlsketvkwyq
lta