The complete mitochondrial genome of the clam Mactra veneriformis (Bivalvia: Mactridae): Has a unique non-coding region, missing atp8 and typical tRNASer. (December 2013)

• Record Type: Journal Article
• Authors: Meng, Xueping; Shen, Xin; Zhao, Nana; Tian, Mei; Liang, Meng; Hao, Jue; Cheng, Hanliang; Yan, Binlun; Dong, Zhiguo; Zhu, Xiaoling
• Is Part Of: Mitochondrial DNA. Volume 24:Number 6(2013:Dec.)
• Page Start: 613
• Page End: 615
• Publication Date: 2013-12
• Subjects: Mitochondrial DNA -- Periodicals; Mitochondrial DNA -- Abnormalities -- Periodicals; Nucleotide sequence -- Periodicals; Gene mapping -- Periodicals; 572.869
• DOI: 10.3109/19401736.2013.772152
• Languages: English
• ISSNs: 1940-1736

Abstract

<abstract> <title> <x xml:space="preserve">Abstract</x> </title> <p> <italic>Mactra veneriformis</italic> (Bivalvia: Mactridae) is one commonly cultured bivalve species in the western Pacific Ocean. In the current study, the complete mitrochondrial DNA (mtDNA) of the clam <italic>M. veneriformis</italic> was determined. The <italic>M. veneriformis</italic> mt genome is 16, 854 bp in length and encodes 34 genes on the same strand, including 12 protein-coding genes (PCGs), 2 ribosomal RNA genes and 20 transfer RNA genes. The length of 12 PCGs is 11, 358 bp, which accounts for 67.4% in whole mt genome. The proportion is similar to other clams' mt genomes and within those of bivalves mt genomes. Gene order (which is the same as that of RZ <italic>C. antiquata</italic>) of <italic>M. veneriformis</italic> mt genome is compared with that of other veneroids. Compared with the typical gene content of animal mt genomes, <italic>atp8</italic> and two <italic>tRNA</italic><sup><italic>Ser</italic></sup> genes are missing in the mt genome. All non-coding regions are 1978 bp in length, among them the longest one is speculated as the control region, which is located between the <italic>tRNA</italic><sup><italic>His</italic></sup> and <italic>tRNA</italic><sup><italic>Arg</italic></sup>. The secondary largest non-coding region (NCR<sub>664</sub>) between the <italic>tRNA</italic><sup><italic>Gln</italic></sup> and <italic>tRNA</italic><sup><italic>Thr</italic></sup> in the <italic>M. veneriformis</italic> mt genome contains one section of tandem repeats (125 nt × 5.2 or 249 nt × 2.6). The tandem repeats account for 97.89% (650/664) of the NCR<sub>664</sub>, which is a unique characteristic of the <italic>M. veneriformis</italic> mt non-coding regions compared with those of other veneroids.</p> </abstract>