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A universal method to produce in vitro transcripts with homogeneous 3' ends
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Genetics and Pathology.ORCID iD: 0000-0002-4383-9880
2002 (English)In: Nucleic Acids Research, ISSN 0305-1048, E-ISSN 1362-4962, Vol. 30, no 12, e56- p.Article in journal (Refereed) Published
Abstract [en]

A method is described that allows a general drawback of in vitro transcription assays to be overcome: RNA polymerases tend to add extra nucleotides to the RNA 3' end that are not encoded in the linearized DNA template. Furthermore, these polymerases show a considerable rate of premature termination close to the RNA's 3' end. These features lead to a decreased yield of full-length transcripts and often make it difficult to determine and isolate the correctly transcribed full-length RNA. The hammerhead ribozyme is frequently used in cis to cleave off these extra nucleotides. However, the upstream sequence requirements of this ribozyme restrict its general usability. In contrast, the hepatitis delta virus ribozyme has no such requirements and can therefore be applied to any RNA sequence in cis. Due to the catalytic activity of the ribozyme, the desired transcript is released as an RNA molecule with a homogeneous 3' end. The resulting 2',3'-cyclo-phosphate group of the released RNA can be easily and efficiently removed by T4 polynucleotide kinase treatment. The presented method can be applied for virtually any sequence to be transcribed and is therefore superior to other ribozyme strategies, suggesting possible applications in every field where transcripts with homogeneous 3' ends are required.

Place, publisher, year, edition, pages
2002. Vol. 30, no 12, e56- p.
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Medical and Health Sciences
Identifiers
URN: urn:nbn:se:uu:diva-108116PubMedID: 12060694OAI: oai:DiVA.org:uu-108116DiVA: diva2:329222
Available from: 2010-07-08 Created: 2009-09-08 Last updated: 2017-12-12Bibliographically approved

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Schuster, Jens

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