>1z3nA (A:) observed residues (from ATOM records)
masrillnngakmpilglgtwksppgqvteavkvaidvgyrhidcahvyqnenevgvaiq
eklreqvvkreelfivsklwctyhekglvkgacqktlsdlkldyldlylihwptgfkpgk
effpldesgnvvpsdtnildtwaameelvdeglvkaigisnfnhlqvemilnkpglkykp
avnqiechpyltqekliqycqskgivvtaysplgspdrpwakpedpslledprikaiaak
hnkttaqvlirfpmqrnlvvipksvtperiaenfkvfdfelssqdmttllsynrnwrvca
llsctshkdypfheef