The mitochondrial genome of Conus textile, coxI-coxII intergenic sequences and Conoidean evolution.

ABSTRACT: The cone snails belong to the superfamily Conoidea, comprising approximately 10,000 venomous marine gastropods. We determined the complete mitochondrial DNA sequence of Conus textile. The gene order is identical in Conus textile, Lophiotoma cerithiformis (another Conoidean gastropod), and the neogastropod Ilyanassa obsoleta, (not in the superfamily Conoidea). However, the intergenic interval between the coxI and coxII genes was much longer in C. textile (165bp) than in any other previously analyzed gastropod. We used the intergenic region to evaluate evolutionary patterns. In most neogastropods and three conidean families the intergenic interval is small (<30 nucleotides). Within Conus, the variation is from 130 to 170bp, and each different clade within Conus has a narrower size distributi

SUBMITTER: Bandyopadhyay PK 

PROVIDER: S-EPMC2718723 | biostudies-literature | 2008 Jan

REPOSITORIES: biostudies-literature