>1xu5E (E:) observed residues (from ATOM records) klgihsndtrdawvnkiaqlntlekaaemlkqfrmdhttpfrnsyeldndylwieaklee kvavlkarafnevdfrhktafgedaksvldgtvakmnaakdkweaekihigfrqaykppi mpvnyfldgerqlgtrlmelrnlnyydtpleelrkqrgvrvvhlqs