>1et6B (B:) observed residues (from ATOM records) dnnsllrniystivyeysdividfktshnlvtkkldvrdardffinsemdeyaandfktg dkiavfsvpfdwnylskgkvtaytyggitpyqktsipknipvnlwingkqisvpyneist nkttvtaqeidlkvrkfliaqhqlyssgssyksgrlvfhtkysfdlfyvgyrdkesifkv ykdnksfnidkighldieids