>6fn8A (A:) observed residues (from ATOM records)
nlgaavailggpgtvqgvvrflqltpercliegtidglepglhglhvhqygdltnncnsc
gnhfnpdgashggpqdsdrhrgdlgnvradadgraifrmedeqlkvwdvigrsliidege
ddlgrgghplskitgnsgerlacgiiarsag