title: Mitochondrial genome of Thais clavigera (Mollusca: Gastropoda): affirmation of the conserved, ancestral gene pattern within the mollusks.
abstract: Class Gastropoda includes a large number of described species, many with extensively rearranged mitochondrial genomes. We sequenced the mitogenome of the rock shell, Thais clavigera (Gastropoda: Muricidae), an intertidal snail, using long PCR with primers designed on the basis of expressed sequence tags. The mitogenome of T. clavigera consists of 2 rRNAs, 22 tRNAs, and 13 protein-coding genes, but no control region. Structural comparisons revealed that the order Sorbeoconcha, including T. clavigera, have nearly identical mitochondrial gene patterns. However, they have an inversion between a tRNA(Phe)-tRNA(Glu) cluster that comprises 21 genes, but most of the remaining structure is similar to the putative mollusk ground pattern. These findings will provide a better insight into mitochondrial gene rearrangement over the course of gastropod evolution.
authors.affiliation: Department of Life Science, College of Natural Sciences, Sangmyung University, Seoul 110-743, South Korea.
authors.forename: Jang-Seu
authors.initials: JS
authors.lastname: Ki
authors.forename: Young-Mi
authors.initials: YM
authors.lastname: Lee
authors.forename: Sang-Oun
authors.initials: SO
authors.lastname: Jung
authors.forename: Toshihiro
authors.initials: T
authors.lastname: Horiguchi
authors.forename: Hyeon-Seo
authors.initials: HS
authors.lastname: Cho
authors.forename: Jae-Seong
authors.initials: JS
authors.lastname: Lee
mesh_terms: D000818:Animals; D004272:DNA, Mitochondrial / Q000235:genetics; D019143:Evolution, Molecular; D020224:Expressed Sequence Tags; D049851:Gastropoda / Q000145:classification / Q000235:genetics*; D023061:Gene Order; D015321:Gene Rearrangement; D050259:Genes, Mitochondrial; D020459:Genes, rRNA; D054629:Genome, Mitochondrial; D010802:Phylogeny; D012343:RNA, Transfer / Q000235:genetics; D017422:Sequence Analysis, DNA
chemical_list: D004272:DNA, Mitochondrial; D012343:RNA, Transfer