>1k3rB (B:) observed residues (from ATOM records)
mnrvdlslfipdsltaetgdlkiktykvvliaraasifgvkriviyhddadgearfirdi
ltymdtpqylrrkvfpimrelkhvgilpplrtphhptgkpvtgeyrqgltvkrvkkgtlv
digadklalcrekltvnrimsfrvvrlgkeiliepdepedrywgyevldtrrnlaeslkt
vgadvvvatsrnaspitsildevktrmrgareaailfggpykglpeidadiwvntlpgqc
tetvrteeavlatlsvfnmltqid