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Nucleic Acids Res. 1981 Jul 24;9(14):3321-34.

Nucleotide sequences of Acanthamoeba castellanii 5S and 5.8S ribosomal ribonucleic acids: phylogenetic and comparative structural analyses.


Sequences of 5S and 5.8S rRNAs of the amoeboid protist Acanthamoeba castellanii have been determined by gel sequencing of terminally-labeled RNAs which were partially degraded with chemical reagents or ribonucleases. The sequence of the 5S rRNA is (formula, see text). This sequence is compared to eukaryotic 5S rRNA sequences previously published and fitted to a secondary structure model which incorporates features of several previously proposed models. All reported eukaryotic 5S rRNAs fit this model. The sequence of the 5.8S rRNA is (formula, see text). This sequence does not fit parts of existing secondary structure models for 5.8S rRNA, and we question the significance of such models.

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