>1u3fB (B:) observed residues (from ATOM records)
mdknalrkqilqkrmalstiekshldqkinqklvafltpkpciktialyepiknevtfvd
fffeflkinqiravypkvisdteiifidqetntfepnqidcfliplvgfnkdnyrlgfgk
gyydrylmqltrqqpkigiaysfqkgdfladpwdvqldliinde