The complete mitochondrial genomes sequences of Asio flammeus and Asio otus and comparative analysis

  • Yi Sun
  • Fei Ma
  • Bing Xiao
  • Junjie Zheng
  • Xiaodong Yuan
  • Minqian Tang
  • Li Wang
  • Yefei Yu
  • Qingwei Li
Article

DOI: 10.1360/04yc0117

Cite this article as:
Sun, Y., Ma, F., Xiao, B. et al. Sci. China Ser. C.-Life Sci. (2004) 47: 510. doi:10.1360/04yc0117
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Abstract

The complete mitochondrial genomes of Asio flammeus and Asio otus were sequenced and found to span 18858 bp and 18493 bp, respectively. It is surprising to find the former to be the largest among all avian mitochondrial genomes sequenced so far. The two genomes have very similar gene order with that of Gallus gallus, neither contains the pseudo control region, but both have a single extra base, namely Cytidine, at position 174 in ND3 gene. The control regions of Asio flammeus and Asio otus’ mitochondrial genomes span 3288 bp and 2926 bp respectively, which are the longest among vertebrates except for Myxine glutinosa and contribute to the large size of two genomes. The 3′ end of the control region of Asio flammeus and Asio otus contains many tandemly repeated sequences, which are highly similar to a putative control element, i.e. Mt5, and may form stable stem-loop secondary structures. Such repeated sequences probably play an important role in regulating transcription and replication of mitochondrial genome. Our results may provide important clues for uncovering the origin and evolution mechanisms of mitochondrion genome.

Keywords

Asio flammeus Asio otus mitochondrial genome control region repeated sequence 

Copyright information

© Science in China Press 2004

Authors and Affiliations

  • Yi Sun
    • 1
  • Fei Ma
    • 1
  • Bing Xiao
    • 1
  • Junjie Zheng
    • 2
  • Xiaodong Yuan
    • 2
  • Minqian Tang
    • 2
  • Li Wang
    • 3
  • Yefei Yu
    • 3
  • Qingwei Li
    • 1
  1. 1.College of Life SciencesLiaoning Normal UniversityDalianChina
  2. 2.TaKaRa Biotechnology (Dalian) Co., Ltd.DalianChina
  3. 3.The Administrative Office of the Natural Protective Zone of Snake Island-Lao Tie HillDalianChina

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