>4nrkD (D:) observed residues (from ATOM records)
gffgaiagfleggwegmiagwhgytshgahgvavaadlkstqeainkitknlnslselev
knlqrlsgamnelhdeileldekvddlradtissqielavllsnegiinsedehllaler
klkkmlgpsaveigngcfetkhkcnqtcldriaagtfnagdfslptfd