Complete nucleotide sequence of the mitochondrial genome of a salamander, Mertensiella luschani

Zardoya, Rafael; Málaga-Trillo, Edward; Veith, Michael; Meyer, Axel

Complete nucleotide sequence of the mitochondrial genome of a salamander, Mertensiella luschani

Dateien

P148.pdfGröße: 1.98 MBDownloads: 583

Datum

2003

Autor:innen

Zardoya, Rafael

Málaga-Trillo, Edward

Veith, Michael

Meyer, Axel

Open Access-Veröffentlichung

Open Access Green

Sammlungen

Biologie

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Gene. 2003, 317, pp. 17-27. ISSN 0378-1119. Available under: doi: 10.1016/S0378-1119(03)00655-3

Zusammenfassung

The complete nucleotide sequence (16,650 bp) of the mitochondrial genome of the salamander Mertensiella luschani (Caudata, Amphibia) was determined. This molecule conforms to the consensus vertebrate mitochondrial gene order. However, it is characterized by a long non-coding intervening sequence with two 124-bp repeats between the tRNAThr and tRNAPro genes. The new sequence data were used to reconstruct a phylogeny of jawed vertebrates. Phylogenetic analyses of all mitochondrial protein-coding genes at the amino acid level recovered a robust vertebrate tree in which lungfishes are the closest living relatives of tetrapods, salamanders and frogs are grouped together to the exclusion of caecilians (the Batrachia hypothesis) in a monophyletic amphibian clade, turtles show diapsid affinities and are placed as sister group of crocodiles+birds, and the marsupials are grouped together with monotremes and basal to placental mammals. The deduced phylogeny was used to characterize the molecular evolution of vertebrate mitochondrial proteins. Amino acid frequencies were analyzed across the main lineages of jawed vertebrates, and leucine and cysteine were found to be the most and least abundant amino acids in mitochondrial proteins, respectively. Patterns of amino acid replacements were conserved among vertebrates. Overall, cartilaginous fishes showed the least variation in amino acid frequencies and replacements. Constancy of rates of evolution among the main lineages of jawed vertebrates was rejected.

Fachgebiet (DDC)

570 Biowissenschaften, Biologie

Schlagwörter

Mertensiella, Amphibians, Mitochondrial DNA, Molecular evolution

Zitieren

ISO 690

ZARDOYA, Rafael, Edward MÁLAGA-TRILLO, Michael VEITH, Axel MEYER, 2003. Complete nucleotide sequence of the mitochondrial genome of a salamander, Mertensiella luschani. In: Gene. 2003, 317, pp. 17-27. ISSN 0378-1119. Available under: doi: 10.1016/S0378-1119(03)00655-3

BibTex

@article{Zardoya2003Compl-8152,
  year={2003},
  doi={10.1016/S0378-1119(03)00655-3},
  title={Complete nucleotide sequence of the mitochondrial genome of a salamander, Mertensiella luschani},
  volume={317},
  issn={0378-1119},
  journal={Gene},
  pages={17--27},
  author={Zardoya, Rafael and Málaga-Trillo, Edward and Veith, Michael and Meyer, Axel}
}

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