Mitochondrial L-rRNA from Aspergillus nidulans: potential secondary structure and evolution.
The alignment of gene sequences coding for A. nidulans mitochondrial L-rRNA and E. coli 23S rRNA indicates a strong conservation of primary and potential secondary structure of both rRNA molecules, except that homologies to the 5'-terminal 5.8S-like region and the 3'-terminal 4.5S-like region of bacterial rRNA are not detectable on mtDNA. The structural organization of the A. nidulans mt L-rRNA gene corresponds to that of yeast omega + strains: both genes are interrupted by a large intron sequence (1678 and 1143 bp, respectively) and by another smaller insert (91 and 66 bp) at homologous positions within domain V. An evolutionary tree derived from conserved L-rRNA gene sequences of yeast nuclei, E. coli, maize chloroplasts and six mitochondrial species exhibits a common root of organelle and bacterial sequences separating early from the nuclear branch.
D000818:Animals; D001233:Aspergillus nidulans / Q000235:genetics*; D001482:Base Composition; D001483:Base Sequence; D005075:Biological Evolution; D004272:DNA, Mitochondrial / Q000235:genetics*; D004926:Escherichia coli / Q000235:genetics; D005796:Genes; D006801:Humans; D009690:Nucleic Acid Conformation; D012335:RNA, Ribosomal / Q000235:genetics*; D013045:Species Specificity
D004272:DNA, Mitochondrial; D012335:RNA, Ribosomal