>4iw9B (B:) observed residues (from ATOM records)
nlyfqsmklygltgacsfvphvalewvklranqdyafqavsrefiksaeylalnprgnvp
llvdgdlaltqnqaivhyldelypeaklfgsktardkakaarwlaffnsdvhksfvplfr
lpsyaegnetltktirqqsaeqileqlafanahlenhiffgeeisvadaylyimlnwcrl
lgldfshlsqlsafmqrveadqgvdnvreqeglkg