Determination of the Secondary Structure of an RNA fragment in Solution: Selective 2`-Hydroxyl Acylation Analyzed by Primer Extension Assay (SHAPE)

Autor: Manuel Miras Marin, Raquel Sempere, Jelena Kraft, W. Miller, Miguel Aranda, Veronica Truniger
Jazyk: angličtina
Rok vydání: 2015
Předmět:
Zdroj: Bio-Protocol, Vol 5, Iss 2 (2015)
Druh dokumentu: article
ISSN: 2331-8325
DOI: 10.21769/BioProtoc.1386
Popis: This protocol describes the methodology for the determination of the secondary structure of an RNA fragment in solution using Selective 2´-Hydroxyl Acylation analyzed by Primer Extension, abbreviation SHAPE. It consists in the very fast chemical modification of flexible and therefore possibly single-stranded nucleotides in a sequence-independent manner using benzoyl cyanide (BzCN), forming 2´-O-adducts. The modifications in the RNA are then analyzed by primer extension. Reverse transcriptase is blocked by the 2´-O-adducts formed. The advantage of the method is, first, that not each RNA molecule studied but the primer used in the extension reaction is labelled and, second, that the resulting cDNA analyzed in sequencing gels is much more stable than the modified RNA.
Databáze: Directory of Open Access Journals