The complete mitogenome of the Chionoecetes opilio (Crustacea: Decapoda: Oregoniidae) and its unique characteristics

• Published in: Mitochondrial DNA Part B
• Main Authors: Jin-Hyeop Jeong, Seongho Ryu, Won Kim
• Format: Article in Journal/Newspaper
• Language: English
• Published: Taylor & Francis Group 2020
• Subjects: mitogenome; decapoda; majoidea; chionoecetes opilio; atypical trnas; Genetics; QH426-470; Chionoecetes opilio
• Online Access: https://doi.org/10.1080/23802359.2020.1780974; https://doaj.org/article/26452ee94ab14d478f95ea24e9154ced

The complete mitochondrial genome of Chionoecetes opilio is a 16,067 bp long, circular molecule which contains 13 protein-coding genes (PCGs), 22 transfer RNA genes (tRNAs), and 2 ribosomal RNA genes (rRNAs). Its gene contents and organization are generally similar to other majoid mitogenomes. However, the mitogenome shows unique characteristics; long terminal amino acids, loss or addition of 3 PCGs, a 1216 bp long putative D-loop region, and peculiar secondary structures of 5 tRNAs. The concatenated amino acid sequences of 13 PCGs were used to analyze the phylogenetic tree, which well supported the monophyly of brachyuran clades of Majoidea, Heterotremata, Thoracotremata, and Eubrachyura.