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  • Title: Multiplexed pyrosequencing of nine sea anemone (Cnidaria: Anthozoa: Hexacorallia: Actiniaria) mitochondrial genomes.
    Author: Foox J, Brugler M, Siddall ME, Rodríguez E.
    Journal: Mitochondrial DNA A DNA Mapp Seq Anal; 2016 Jul; 27(4):2826-32. PubMed ID: 26104159.
    Abstract:
    Six complete and three partial actiniarian mitochondrial genomes were amplified in two semi-circles using long-range PCR and pyrosequenced in a single run on a 454 GS Junior, doubling the number of complete mitogenomes available within the order. Typical metazoan mtDNA features included circularity, 13 protein-coding genes, 2 ribosomal RNA genes, and length ranging from 17,498 to 19,727 bp. Several typical anthozoan mitochondrial genome features were also observed including the presence of only two transfer RNA genes, elevated A + T richness ranging from 54.9 to 62.4%, large intergenic regions, and group 1 introns interrupting NADH dehydrogenase subunit 5 and cytochrome c oxidase subunit I, the latter of which possesses a homing endonuclease gene. Within the sea anemone Alicia sansibarensis, we report the first mitochondrial gene order rearrangement within the Actiniaria, as well as putative novel non-canonical protein-coding genes. Phylogenetic analyses of all 13 protein-coding and 2 ribosomal genes largely corroborated current hypotheses of sea anemone interrelatedness, with a few lower-level differences.
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