>3zrcF (F:) observed residues (from ATOM records)
lrsvnsrepsqvifcnrsprvvlpvwlnfdgepqpyptlppgtgrrihsyrghlwlfrda
gthdgllvnqtelfvpslnvdgqpifanitlpvytlkerclqvvrslvkpenyrrldivr
slyedledhpnvqkdlerltqe