Functional messenger RNAs are produced by SP6 in vitro transcription of cloned cDNAs

P. A. Krieg, D. A. Melton

Research output: Contribution to journalArticle

1033 Scopus citations


We describe a method for the synthesis of microgram quantities of eucaryotic messenger RNAs. Injection into the cytoplasm of frog oocytes and addition to wheat germ extracts show that these synthetic RNAs function efficiently as messenger RNAs. We confirm that a 5′ cap on the mRNA is essential for translation in injected oocytes and show that most of the 3′ flanking region, including the poly A tail, can be deleted without the abolition of protein synthesis. The method of mRNA synthesis involves in vitro transcription of cDNAs which have been cloned into SP6 vectors (described in the accompanying paper). This method enables one to produce large amounts of mRNA and consequently protein from any cDNA clone.

Original languageEnglish (US)
Pages (from-to)7057-7070
Number of pages14
JournalNucleic acids research
Issue number18
StatePublished - Sep 25 1984
Externally publishedYes


ASJC Scopus subject areas

  • Genetics

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