Si Ranran, Chen Hao, Ai Weiming, Chen Xiao, Chen Shaobo
Department of Marine Science, Wenzhou Medical University, Wenzhou, Zhejiang, PR China.
Zhejiang Mariculture Research Institute, Wenzhou, Zhejiang, PR China.
Mitochondrial DNA B Resour. 2016 Mar 29;1(1):270-272. doi: 10.1080/23802359.2016.1159935.
In this study, the complete mitochondrial genome of the Bowmouth guitarfish (Rajiformes, Rhinobatidae) was first determined. The total length of this circle DNA was 17 217 bp, consisted of 37 genes with a typical gene order in vertebrate mitogenome. It had 42 bp short intergenic spaces and 40 bp overlaps. The nucleotide composition in was as follows: A, 33.0%; C, 25.1%; G, 12.6% and T, 29.3%. Two start codons (GTG and ATG) and two stop codons (TAG and TAA/T) were used in the protein-coding genes. The 22 tRNA genes were ranged from 67 bp (tRNA-) to 75 bp (tRNA-). The phylogenetic result showed that was clustered with the Rhinobatos.
在本研究中，首次测定了犁头鳐（鳐形目，犁头鳐科）的完整线粒体基因组。该环状DNA的总长度为17217bp，由37个基因组成，具有脊椎动物线粒体基因组中的典型基因顺序。它有42bp的短基因间隔和40bp的重叠区域。其核苷酸组成如下：A为33.0%；C为25.1%；G为12.6%；T为29.3%。蛋白质编码基因中使用了两个起始密码子（GTG和ATG）和两个终止密码子（TAG和TAA/T）。22个tRNA基因的长度范围为67bp（tRNA-）至75bp（tRNA-）。系统发育结果表明，其与犁头鳐属聚在一起。
