>3sxsA (A:) observed residues (from ATOM records)
ghmelkreeitllkelgsgqfgvvklgkwkgqydvavkmikegsmsedeffqeaqtmmkl
shpklvkfygvcskeypiyivteyisngcllnylrshgkglepsqllemcydvcegmafl
eshqfihrdlaarnclvdrdlcvkvsdfgmtryvlddqyvssvgtkfpvkwsapevfhyf
kyssksdvwafgilmwevfslgkmpydlytnsevvlkvsqghrlyrphlasdtiyqimys
cwhelpekrptfqqllssieplre