>3cusA (A:) observed residues (from ATOM records)
akhrpsvvwlhnaectgcteaairtikpyidalildtisldyqetimaaageaaeaalhq
alegkdgyylvvegglptidggqwgmvaghpmiettkkaaakakgiicigtcsayggvqk
akpnpsqakgvsealgvktinipgcppnpinfvgavvhvltkgipdldengrpklfygel
vhdncprlphfeasefapsfdseeakkgfclyelgckgpvtynncpkvlfnqvnwpvqag
hpclgcsepdfwdtmtpfyeqg