Nucleic Acids Research, 1993, Vol. 21, No. 4 1007-1011
© 1993
MOLECULAR BIOLOGY |
Intermolecular mRNA - rRNA hybridization and the distribution of potential interaction regions in murine 18s rRNA
Engelhardt Institute of Molecular Biology, Russian Academy of Saences Vavilov st., 32, Moscow 11 7984 1Institute of Mathematic Problems in Biology, Russian Academy of Sciences Pushchino, Moscow Region 142292, Russia
Received September 25, 1992. Revised January 20, 1993. Accepted January 20, 1993.
lntremolecular hybrldizatlon experiments show that murlne 18S rRNA and 28s rRNA are capable of forming stable hybrid structures with mRNA from genes p53, c-myc and c-mos from the same species. Both 5'-uncoding and coding oncogene p53 mRNA regions contain fragments Interacting with rRNA. Computer analysis revealed 18s rRNA fragments complementary to ollgonucleotldes frequently met in mRNA, which are potential hybridization regions (clinger-fragments). The distribution of clinger-fragments along 18S rRNA sequence Is universal at least for one hundred murine mRNA sequences analyzed. Maximal frequencies of ollgonucleotldes complementary to 18s rRNA cllngerfragments are reliably (23 times) higher for mRNA than for intron sequences and randomly generated sequences. The results obtained suggest a possible role of clinger-fragments In translatlon processes as unlverslal reglons of mRNA binding.
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