>1twlA (A:) observed residues (from ATOM records)
npfhdlepgpdvpevvyaiieipkgsrnkyeldkktgllkldrvlyspffypvdygiipr
twyeddpfdimvimrepvypltiiearpiglfkmidsgdkdykvlavpvedpyfkdwkdi
ddvpkafldeiahffkrykelqgkeiivegwegaeaakreilraiemykekf