>3w31B (B:) observed residues (from ATOM records)
maglprriiketqrllaepvpgikaepdesnaryfhvviagpqdspfeggtfklelflpe
eypmaapkvrfmtkiyhpnvdklgricldilkdkwspalqirtvllsiqallsapnpddp
landvaeqwktneaqaietarawtrlyamnni