Complete mitochondrial genome of sea urchin: Heliocidaris crassispina (Echinometridae, Echinoida)

Abstract

Nucleotide sequence information of the mitochondrial genome is widely used for source of molecular markers for systematic and molecular evolution. In this study, the complete mitochondrial genome Heliocidaris crassispina (A.Agassiz,1863) is sequenced. The circular genome is 15,702bp in length and composed of 13 protein coding genes of typical mitochondrial proteins, 2 rRNA and 22 tRNA genes, and 1 short control region of 121bp. The percentage of overall nucleotide composition becomes 31.0% of A, 24.4% of C, 16.7% of G and 27.9% of T showing a slight AT bias (58.9%). Eleven of the 13 protein coding genes use ATG codon at their start site while the ATP8 gene starts with GTG and ND4L gene with ATC. The complete mitogenome sequence provided here would enrich molecular information necessary for population genetics, phylogeography and phylogenetics of sea urchins. sequenced. The circular genome is 15,702bp in length and composed of 13 protein coding genes of typical mitochondrial proteins, 2 rRNA and 22 tRNA genes, and 1 short control region of 121bp. The percentage of overall nucleotide composition becomes 31.0% of A, 24.4% of C, 16.7% of G and 27.9% of T showing a slight AT bias (58.9%). Eleven of the 13 protein coding genes use ATG codon at their start site while the ATP8 gene starts with GTG and ND4L gene with ATC. The complete mitogenome sequence provided here would enrich molecular information necessary for population genetics, phylogeography and phylogenetics of sea urchins.