>4bksL (L:) observed residues (from ATOM records)
vlrsvnsrepsqvifcnrsprvvlpvwlnfdgepqpyptlppgtgrrihsyrghlwlfrd
agthdgllvnqtelfvpslnvdgqpifanitlpvytlkerclqvvrslvkpenyrrldiv
rslyedledhpnvqkdlerltqer