>5r15A (A:) observed residues (from ATOM records) gamnssnyaelfnndiklfvddtnvyrvtvhktfegnvatkaingciftlnpktghlflk iihtsvwagqkrlsqlakwktaeevsalvrslpkeeqpkqiivtrkamldplevhmldfp niairptelrlpfsaamsidklsdvvmkatepqmvlfniyddwldrissytafsrltlll ralktneesakmillsdptitiksyhlwpsftdeqwitiesqmrdlilteygrkynv