Mitochondrial genome of Cipangopaludina japonica (Gastropoda: Viviparidae) with a tRNA gene rearrangement

The mitochondrial genome of a freshwater snail, Cipangopaludina japonica from Nagoya, Central Japan was nearly completely sequenced. This genome encodes 37 genes as found in most other metazoan species. However, there was a changed order of tRNA(Glu) and tRNA(Gly) genes, a unique feature that was not found in mitochondrial genomes of closely related river snails. Phylogenetic analysis suggested that C. japonica is more closely related to C. ussuriensis from Amur River than to any other Cipangopaludina species sequenced to date.