>1fz4E (E:) observed residues (from ATOM records)
klgihsndtrdawvnkiaqlntlekaaemlkqfrmdhttpfrnsyeldndylwieaklee
kvavlkarafnevdfrhktafgedaksvldgtvakmnaakdkweaekihigfrqaykppi
mpvnyfldgerqlgtrlmelrnlnyydtpleelrkqrgvrvvhlqs