FEBS Lett 1986 Mar 31;1982:333-8.

The secondary structures of the Xenopus laevis and human mitochondrial small ribosomal subunit RNA are similar.

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Extensive corrections of the nucleotide sequence of the Xenopus laevis mitochondrial small ribosomal subunit RNA gene [Roe et al. (1985) J. Biol. Chem. 260, 9759-9774] are reported. We found an additional fragment of 142 nucleotides and describe 25 nucleotide differences scattered in the gene. The nucleotide sequence the same gene of bovine mitochondrion. We propose a new secondary structure for the product of the X. laevis gene. Contrary to the finding of Roe et al., we observed the same general organization of stems and loops as for the human mitochondrial 12 S rRNA gene product. On the other hand, the structural homology observed between the mitochondrial and cytoplasmic small subunit rRNAs of X. laevis appears much lower. These results strongly suggest that animal vertebrate mitochondrial DNAs have followed the same evolutionary pathway.

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Species referenced: Xenopus laevis
Genes referenced: tbx2