title: The complete mitochondrial genome of the fire coral-inhabiting barnacle Megabalanus ajax (Sessilia: Balanidae): gene rearrangements and atypical gene content.
abstract: The complete mitochondrial genome of Megabalanus ajax Darwin, 1854 (Sessilia: Balanidae) is reported. Compared to typical gene content of metazoan mitochondrial genomes, duplication of one tRNA gene (trnL2) and absence of another tRNA gene (trnS1) are identified in M. ajax mitochondrial genome. There is a replacement of one tRNA (trnS1) by another tRNA (trnL2) in M. ajax mitochondrial genome compared to Megabalanus volcano mitochondrial genome. Inversion of a six-gene block (trnP-nd4L-nd4-trnH-nd5-trnF) is found between M. ajax/M. volcano and Tetraclita japonica mitochondrial genomes. With reference to the pancrustacean mitochondrial ground pattern, there is an inversion of a large gene block from the light strand to heavy strand in the two Megabalanus mitochondrial genomes, including three PCGs and two tRNAs (nd4L-nd4-trnH-nd5-trnF). Furthermore, four tRNAs (trnA, trnE, trnQ and trnC) exhibit translocation, while translocation and inversion occur in three tRNAs (trnP, trnY and trnK).
authors: a Jiangsu Key Laboratory of Marine Biotechnology/College of Marine Science , Huaihai Institute of Technology , Lianyungang , China .|b Simon F. S. Li Marine Science Laboratory , School of Life Sciences, The Chinese University of Hong Kong , Shatin, N.T. , Hong Kong , China .
authors: Xin
authors: X
authors: Shen
authors: b Simon F. S. Li Marine Science Laboratory , School of Life Sciences, The Chinese University of Hong Kong , Shatin, N.T. , Hong Kong , China .
authors: Ka Hou
authors: KH
authors: Chu
authors: c Biodiversity Research Center, Academia Sinica , Taipei , Taiwan .
authors: Benny Kwok Kan
authors: BK
authors: Chan
authors: d Institute of Marine Biology, National Taiwan Ocean University , Keelung , Taiwan , and.|e Center of Excellence for the Oceans, National Taiwan Ocean University , Keelung , Taiwan.
authors: Ling Ming
authors: LM
authors: Tsang
mesh_terms: D000818:Animals; D060829:Arthropod Proteins / Q000235:genetics; D001483:Base Sequence; D015321:Gene Rearrangement; D054629:Genome, Mitochondrial / Q000502:physiology*; D024101:Mitochondrial Proteins / Q000235:genetics; D008969:Molecular Sequence Data; D012313:RNA / Q000235:genetics; D000077278:RNA, Mitochondrial; D012335:RNA, Ribosomal / Q000235:genetics; D012343:RNA, Transfer / Q000235:genetics; D001468:Thoracica / Q000235:genetics*
chemical_list: D060829:Arthropod Proteins; D024101:Mitochondrial Proteins; D000077278:RNA, Mitochondrial; D012335:RNA, Ribosomal; D012313:RNA; D012343:RNA, Transfer
keywords: Gene duplication; Maxillopoda; Sessilia; gene rearrangement; mitochondrial genome