Phosphoryl migration during the chemical synthesis of RNA

Michael A. Morgan, Sergei A. Kazakov, Sidney Hecht

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

By the use of high sensitivity assay systems, we have measured the occurrence of strand scission and phosphoryl migration that accompany the deblocking of chemically synthesized ollgoribonucleotides. Substantial phosphoryl migration was observed for both enzymatically derived poly(uridylic acid) and synthetic uridine oligoribonucleotides 2′-O-protected with the 1 -(2.fluorophenyl)-4 (Fpmp) group, when these species were subjected to the acidic conditions suggested for Fpmp deprotection. Strand scission occurred in parallel and could be demonstrated readily by 5′-32 end labeling, but not by 3′-32 end labellng, of the acid-treated oligoribonucleotides. Increasing the pH of the deprotection solution and decreasing the temperature at which the deprotection was accomplished diminished both phosphoryl migration and strand scission. A mechanism that can rationalize these results is discussed.

Original languageEnglish (US)
Pages (from-to)3949-3953
Number of pages5
JournalNucleic Acids Research
Volume23
Issue number19
DOIs
StatePublished - Oct 11 1995
Externally publishedYes

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Oligoribonucleotides
Chemical Synthesis
RNA
Migration
Uridine Monophosphate
Acids
Uridine
Labeling
Assays
Temperature

ASJC Scopus subject areas

  • Statistics, Probability and Uncertainty
  • Applied Mathematics
  • Health, Toxicology and Mutagenesis
  • Toxicology
  • Genetics(clinical)
  • Genetics

Cite this

Phosphoryl migration during the chemical synthesis of RNA. / Morgan, Michael A.; Kazakov, Sergei A.; Hecht, Sidney.

In: Nucleic Acids Research, Vol. 23, No. 19, 11.10.1995, p. 3949-3953.

Research output: Contribution to journalArticle

Morgan, Michael A. ; Kazakov, Sergei A. ; Hecht, Sidney. / Phosphoryl migration during the chemical synthesis of RNA. In: Nucleic Acids Research. 1995 ; Vol. 23, No. 19. pp. 3949-3953.
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