>5xkaB (B:) observed residues (from ATOM records)
alasgvtfagytvvrmlgcsamgevylvqhpgfpgwqalkvlspamaaddefrrrfqret
evaarlfhphilevhdrgefdgqlwiamdyvdgidatqhmadrfpavlpvgevlaivtav
agaldyahqrgllhrdvnpanvvltsqrilladfgiasqpsypapelsagadvdgradqy
alaltaihlfagappvdrshtgplqppklsafrpdlarldgvlsralatapadrfgscre
fadamneqagv