Complete mitochondrial genome of Sipunculus nudus (Sipuncula, Sipunculidae).

In this paper, the complete mitochondrial (mt) genome of Sipunculus nudus collected from the coast of southeast China was determined. The complete mt genome was 15,376 bp in length, including 13 protein-coding genes, 2 rRNA genes, 23 tRNA genes, and a putative control region (CR). The overall base composition of the H-strand is 29.25% A, 28.78% T, 27.19% C, and 14.78% G, with an AT content of 58.03%. The mt DNA of Chinese S. nudus shared 73.6% and 60.2% identities with that of French S. nudus (GenBank accession number: FJ42,2961) and Chinese Phascolosoma esculenta (GenBank accession number: EF58,3817), respectively.