>2hetD (D:) observed residues (from ATOM records) lskeileelqlntkfteeelsswyqsflkecpsgritrqefqtiyskffpeadpkayaqh vfrsfdansdgtldfkeyvialhmtsagktnqklewafslydvdgngtisknevleivta ifkmispedtkhlpedentpekraekiwgffgkkdddkltekefiegtlankeilrliqf ep