The complete mitochondrial genome of Bombyx mori strain Yu39 (Lepidoptera: Bombycidae)

The complete mitochondrial genome of Bombyx mori strain Yu39 (Lepidoptera: Bombycidae) is a circular molecule of 15,652 bp in length, containing 37 typical mitochondrial genes: 13 protein-coding genes (PCGs), 22 transfer RNAs, 2 ribosomal RNAs and a non-coding AT-rich region. Its gene order and arrangement are identical to the common type found in most insect mitogenomes. All PCGs start with a typical ATN codon, except for the cox1 gene, which begins with uncertained codon. All PCGs terminate in the common stop codon TAA, except for the cox1 and cox2, which use single T as their stop codons. The non-coding AT-rich region is 494-bp long, located between rrnS and trnM genes. It contains some structures of repeated motifs and microsatellite-like elements characteristic of the other lepidopterons.