The complete mitochondrial genome of Bombyx mori strain Huayu (Lepidoptera: Bombycidae)

The complete mitochondrial genome of Bombyx mori strain Huayu (Lepidoptera: Bombycidae) is determined in this study. The genome was 15,666 bp long, with 37 typical animal mitochondrial genes and 1 non-coding A + T-rich region. Its gene content and order were identical to those of other lepidopteran mitochondrial genomes. All protein-coding genes (PCGs) were initiated by ATN codons except for the COI gene, which began with uncertained codon. Eleven PCGs stopped with termination codon TAA, whereas the COI and COII genes ended with single T. All tRNAs have typical structures of insect mitochondrial tRNAs. The 494 bp AT-rich region contains several features common to other lepidopterans, such as the motif ATAGA followed by an 18 bp poly-T stretch and an 11 bp poly-A element upstream of transfer RNA M (trnM) gene.