>2pf2A (A:) observed residues (from ATOM records) ankgfleevrkgnlerecleepcsreeafealeslsatdafwakytacesarnpreklne clegncaegvgmnyrgnvsvtrsgiecqlwrsryphkpeinstthpgadlrenfcrnpdg sitgpwcyttsptlrreecsvpvcgq