>1f6bB (B:) observed residues (from ATOM records)
ssvlqflglykktgklvflgldnagkttllhmlkddptlhptseeltiagmtfttfdlgg
hiqarrvwknylpaingivflvdcadherlleskeeldslmtdetianvpililgnkidr
peaiseerlremfglygqttgkgsvslkelnarplevfmcsvlkrqgygegfrwmaqyid