>6u6nC (C:) observed residues (from ATOM records) yrsafsvgletyvtipnmpirftkifynqqnhydgstgkfhcnipglyyfayhitvymkd vkvslfkkdkamlftyaayqennvdqasgsvllhlevgdqvwlqvygegendstftgfll yhdtn