Flexibility of RNA

Research output: Contribution to journalArticle

96 Citations (Scopus)

Abstract

One of the fundamental properties of the RNA helix is its intrinsic resistance to bend- or twist-deformations. Results of a variety of physical measurements point to a persistence length of 700-800 Å for double-stranded RNA in the presence of magnesium cations, approximately 1.5-2.0-fold larger than the corresponding value for DNA. Although helix flexibility represents an important, quantifiable measure of the forces of interaction within the helix, it must also be considered in describing conformational variation of nonhelix elements (e.g. internal loops, branches). Since the latter always reflect the properties of the flanking helices; that is, such elements are never completely rigid. For one important element of tertiary structure, namely, the core of yeast tRNA(Phe), the above consideration has led to the conclusion that the core is not substantially moro flexible than an equivalent length of pure helix.

Original languageEnglish (US)
Pages (from-to)139-156
Number of pages18
JournalAnnual Review of Biophysics and Biomolecular Structure
Volume26
DOIs
StatePublished - 1997
Externally publishedYes

Fingerprint

RNA, Transfer, Phe
Double-Stranded RNA
RNA
Yeast
Magnesium
Cations
Yeasts
DNA
Positive ions
Transfer RNA

Keywords

  • Molecular evolution
  • Ribozymes
  • RNA structure
  • Transcription
  • Translation

ASJC Scopus subject areas

  • Biophysics
  • Structural Biology

Cite this

Flexibility of RNA. / Hagerman, Paul J.

In: Annual Review of Biophysics and Biomolecular Structure, Vol. 26, 1997, p. 139-156.

Research output: Contribution to journalArticle

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