Complete mitochondrial genome of a chinese scorpion Mesobuthus martensii (Chelicerata, scorpiones, buthidae)

被引：26

作者：

Choi, Eun Hwa ^{[1
]}

Park, Shin Ju ^{[1
]}

Jang, Keum Hee ^{[1
]}

Hwang, Wook ^{[1
]}

机构：

[1] Kyungpook Natl Univ, Teachers Coll, Dept Biol, Taegu 702701, South Korea

来源：

DNA SEQUENCE | 2007年 / 18卷 / 06期

关键词：

Mitochondrial genome; molecular phylogeny; tRNA(Asp) gene loss; arachnid phylogeny; gene arrangement;

D O I：

10.1080/10425170701289883

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

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 tRNA(Glu)-tRNA(Ile)-tRNA(Met) (Q-I-M) arrangement and tRN(Asp)-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.

引用

页码：459 / 471

页数：13

共 47 条

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