>4kcsA (A:) observed residues (from ATOM records)
gpkfprvknwelgsitydtlcaqsqqdgpctprrclgslvlprpaeqllsqardfinqyy
ssikrsgsqaheerlqeveaevastgtyhlreselvfgakqawrnaprcvgriqwgklqv
fdardcssaqemftyicnhikyatnrgnlrsaitvfpqrapgrgdfriwnsqlvryagyr
qqdgsvrgdpanveitelciqhgwtpgngrfdvlplllqapdeapelfvlppelvlevpl
ehptlewfaalglrwyalpavsnmlleigglefsaapfsgwymsteigtrnlcdphryni
ledvavcmdldtrttsslwkdkaaveinlavlhsfqlakvtivdhhaatvsfmkhldneq
karggcpadwawivppisgsltpvfhqemvnyilspafryqpdpw