>1w54B (B:) observed residues (from ATOM records)
anraypytrlrrnrrddfsrrlvrenvltvddlilpvfvldgvnqresipsmpgverlsi
dqllieaeewvalgipalalfpvtpvekksldaaeaynpegiaqratralrerfpelgii
tdvaldpftthgqcgildddgyvlndvsidvlvrqalshaeagaqvvapsdmmdgrigai
realesaghtnvrvmaysakyasayygpfrdavgsatyqmdpansdealhevaadlaega
dmvmvkpgmpyldivrrvkdefraptfvyqvsgeyamhmgaiqngwlaesvilesltafk
ragadgiltyfakqaaeqlrrg