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Viroids proper can be distinguished from hammerhead viroids and satellite RNAs through their dinucleotide composition
1Max-Planck-Institut für Biochemie, Abteilung Viroidforschung, Martinsried, Federal Republic of Germany.
Archives of Virology
|January 1, 1996
Abstract:
G + C-rich viroids proper exhibit a unique dinucleotide composition in that AU and UA are much less frequent than expected. Thus, evaluation of the dinucleotide pattern allows a quick discrimination between viroids proper and similar RNAs from plants, such as hammerhead-containing viroids, satellite RNAs, and defective interfering RNAs. In addition to sequence alignment, this method might be useful for the classification of a newly found small RNA replicon.