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By far the most common type of base pair is the Watson-Crick base pair in an RNA helix. Those are comparably easy to predict, e.g. Mfold and the Vienna RNA package can do this. Base triples, three nucleobases that form hydrogen bonds to each other are not uncommon in RNAs with a complex tertiary structure. There is even a database of RNA triples, though ...


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Transcription always proceeds in the direction 5' (5-prime) to 3' (3-prime) on the coding strand of DNA. Binding of both transcription factors and RNA polymerase to DNA depends on sequence motifs in the DNA. Transcription always happens in the same direction with respect to the chemical structure of the coding DNA strand, while the transcription direction ...


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A base pair between two adjacent bases i,j. It is not possible. To form an intramolecular hydrogen bond, the RNA has to bend. The persistence length i.e. the minimum length of the chain required for bending, is around 4 bases for ssRNA (I am not very sure about this number. At this moment I am not able to locate the exact reference. I remember this ...


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This is speculation, as I haven't done or read of the required experiment. However, I imagine that this would not be a problem. You're right that the RNA template (TERC) would not hybridize with a poly-G sequence, and so the telomerase would not be able to add more telomere repeats. You can imagine that the poly-G sequence is a cap, preventing telomerase ...



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