A single nucleotide substitution converts potato spindle tuber viroid (PSTVd) from a noninfectious to an infectious RNA for nicotiana tabacum.
- M. Wassenegger, R. Spieker, S. Thalmeir, F. Gast, L. Riedel, H. L. Sänger
- 15 December 1996
The sequence analysis of PSTVd NT revealed a single nucleotide substitution from C-->U at position 259, which might be involved in protein binding and in viroid processing in both tobacco and tomato.
Isolation of an RNA-Directed RNA Polymerase–Specific cDNA Clone from Tomato
- W. Schiebel, T. Pélissier, M. Wassenegger
- BiologyThe Plant Cell
- 1 December 1998
Antibodies that were raised against synthetic peptides whose sequences have been deduced from the ORF were shown to specifically detect the 127-kD tomato RdRP protein.
Heavy de novo methylation at symmetrical and non-symmetrical sites is a hallmark of RNA-directed DNA methylation.
- T. Pélissier, S. Thalmeir, D. Kempe, H. L. Sänger, M. Wassenegger
- BiologyNucleic Acids Research
- 1 April 1999
The observation that the heavy methylation was essentially co-extensive with the length of the PSTVd cDNA sequences provided evidence that a direct RNA-DNA interaction can act as a strong and highly specific signal for de novo DNA methylation.