Curr Genet. 1989 Mar;15(3):193-206.

Conserved tRNA gene cluster in starfish mitochondrial DNA.

Jacobs HT, Asakawa S, Araki T, Miura K, Smith MJ, Watanabe K.

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Department of Genetics, University of Glasgow, Scotland, UK.

Abstract

Partial sequencing of mtDNA from four long-diverged species of starfish reveals the existence of a conserved cluster of 13 tRNA genes, organized in a manner similar to that of the tRNA cluster of sea urchin mtDNA, but located at a position distant from the presumed replication origin. These findings suggest that a clustered organization of tRNA genes may have been present in the ancestral mitochondrial genome, and raise the possibility that tRNAs may have catalyzed the dispersal rather than the accumulation of the genes which encode them.

PMID:: 2766382; [PubMed - indexed for MEDLINE]

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