The complete 16053 bp mitochondrial genome (mitogenome) sequence of Locusta migratoria migratoria has been determined. This mitogenome contains the base compositional biases and codon usage typical of metazoans, and the RSCU values indicate a negative correlation with the C and G contents in codon. The orientation and gene order of the L. migratoria migratoria is identical to Locusta migratoria migratoiodes. An unusual feature of the L. migratoria migratoria mitogenome is the presence of three tRNA-like structures on the N-strand: one tRNAIle-like and two tRNALeu(CUN)-like sequences. The tRNA-like sequences have proper folding structures and anticodons sequences. Two repeated DNA sequences, Rpt I and Rpt II, were found in the A T-rich region of the L. migratoria migratoria mitogenome. Both repeated sequences have various features. In the 5′ region of Rpt I, a 51 bp fragment is localized in the srRNA gene; and there are two tandemly sub-repeated DNA sequences (sub-Rpts), Rpt 1–4, within Rpt I and Rpt II. One stem-loop structure on the N-strand that may be involved in the N-strand replication initiation was found in the A T-rich region.
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1 February 2012
Complete Mitochondrial Genome of Locusta Migratoria Migratoria (Orthoptera: Oedipodidae): Three tRNA-Like Sequences on the N-Strand
Hai-Yan Ye,
Li-Li Xiao,
Zhi-Jun Zhou,
Yuan Huang
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Zoological Science
Vol. 29 • No. 2
February 2012
Vol. 29 • No. 2
February 2012
Locusta migratoria migratoria
mitochondrial genome
repeated DNA sequence
stem-loop structure
tRNA-like structure