Protected Nucleotide Sequences in Nuclear Ribonucleoprotein

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5 Scopus citations


The rapidly labeled nuclear ribonucleic acid in human carcinoma cells which is protected by protein from digestion by staphylococcal nuclease (EC has been investigated. A simple and discrete sequence specificity was not found, but the protected RNA fragments are rich in G + C and were shown by fingerprinting to comprise a non-random subset of all heterogeneous nuclear ribonucleic acid (hnRNA) sequences enriched in the sequences AGC, GGC, AGGC, and GAGC. There was no detectable enrichment for double-stranded RNA in the protected fraction. These data provide the first evidence that the association of any protein with hnRNA is nonrandom with respect to nucleotide sequence.

Original languageEnglish (US)
Pages (from-to)3780-3786
Number of pages7
Issue number17
StatePublished - 1979
Externally publishedYes

ASJC Scopus subject areas

  • Biochemistry


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