>1xx4A (A:) observed residues (from ATOM records)
fsnkrvlvekagiavmkfknppvnslslefltefvisleklendksirgviltserpgif
sagldlmemygrnpahyaeywkavqelwlrlylsnltlisaingaspaggclmaltcdyr
imadnskytiglnesllgivapfwlkdnyvntighraaeralqlgtlfppaealkvglvd
evvpedqvhskarsvmakwftipdhsrqltksmmrkatadnlikqreadiqnftsfisrd
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