>3ztxA (A:) observed residues (from ATOM records)
kftiddfdigrplgkgkfgnvylarekqnkfimalkvlfksqlekegvehqlrreieiqs
hlrhpnilrmynyfhdrkriylmlefaprgelykelqkhgrfdeqrsatfmeeladalhy
cherkvihrdikpenllmgykgelkiadfgwsvhapslrrrtmcgtldylppemiegkth
dekvdlwcagvlcyeflvgmppfdspshtethrrivnvdlkfppflsdgskdliskllry
hppqrlplkgvmehpwvkansrrvlppvyq