Chapter title |
Modified Nucleotides and RNA Structure Prediction.
|
---|---|
Chapter number | 8 |
Book title |
RNA Folding
|
Published in |
Methods in molecular biology, February 2012
|
DOI | 10.1007/978-1-0716-3519-3_8 |
Pubmed ID | |
Book ISBNs |
978-1-07-163518-6, 978-1-07-163519-3
|
Authors |
Yuliia Varenyk, Ronny Lorenz, Varenyk, Yuliia, Lorenz, Ronny |
Abstract |
Nucleotide modifications are occurrent in all types of RNA and play an important role in RNA structure formation and stability. Modified bases not only possess the ability to shift the RNA structure ensemble towards desired functional confirmations. By changes in the base pairing partner preference, they may even enlarge or reduce the conformational space, i.e., the number and types of structures the RNA molecule can adopt. However, most methods to predict RNA secondary structure do not provide the means to include the effect of modifications on the result. With the help of a heavily modified transfer RNA (tRNA) molecule, this chapter demonstrates how to include the effect of different base modifications into secondary structure prediction using the ViennaRNA Package. The constructive approach demonstrated here allows for the calculation of minimum free energy structure and suboptimal structures at different levels of modified base support. In particular we, show how to incorporate the isomerization of uridine to pseudouridine ( Ψ ) and the reduction of uridine to dihydrouridine (D). |
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