>1z6xA (A:) observed residues (from ATOM records)
tisslfsrlfgkkqmrilmvgldaagkttilyklklgeivttiptigfnvetveyknicf
tvwdvggqdrirplwkhyfqntqglifvvdsndreriqevadelqkmllvdelrdavlll
fankqdlpnamaisemtdklglqslrnrtwyvqatcatqgtglyegldwlsnels