Complete mitochondrial genome of a Chinese scorpion Mesobuthus martensii (Chelicerata, Scorpiones, Buthidae)

The complete mitochondrial genome (15,034 bp) of a Chinese scorpion Mesobuthus martensii (Buthidae) was sequenced and characterized in detail. The genome contains 13 protein-coding genes, 21 transfer RNA genes, two ribosomal RNA genes and a large non-coding region ( = CR). Its gene arrangement patte...

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Bibliographic Details
Published in:DNA sequence 2007-01, Vol.18 (6), p.461-473
Main Authors: Choi, Eun Hwa, Park, Shin Ju, Jang, Keum Hee, Hwang, Wook
Format: Article
Language:English
Subjects:
Animals
Arachnida
Base Sequence
Buthidae
Chelicerata
Chromosome Mapping
Cloning, Molecular
Genome, Mitochondrial
Limulus polyphemus
Models, Biological
Molecular Sequence Data
Nucleic Acid Conformation
Phylogeny
Proteins - genetics
RNA, Transfer - genetics
Scorpiones
Scorpions - genetics
Sequence Homology, Nucleic Acid
Xiphosura
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Summary:The complete mitochondrial genome (15,034 bp) of a Chinese scorpion Mesobuthus martensii (Buthidae) was sequenced and characterized in detail. The genome contains 13 protein-coding genes, 21 transfer RNA genes, two ribosomal RNA genes and a large non-coding region ( = CR). Its gene arrangement pattern is identical to that of Limulus polyphemus (Chelicerata, Xiphosura), with the exceptions of the tRNAGlu-tRNAIle-tRNAMet (Q-I-M) arrangement and tRNAAsp-loss. Additional interesting features are found and discussed: high frequency of Leu(UUG) codon use, low A+T content of the genome (66.75%), and six repeat units (five 60-nt-long and one 58-nt-long repeats) in the 998-nt CR. Bayesian analysis based on amino acid sequences of the 12 proteincoding genes (excluding ATP8) reveals that the family Buthidae (Order Scorpiones) and the class Arachnida form strong monophyletic groups within Chelicerata, respectively. It indicated that the scorpions are the most ancestral arachnids.
ISSN:1042-5179
1029-2365
DOI:10.1080/10425170701289883