极度濒危的小齿锯鳐（Pristis pectinata）（鳐形目：锯鳐科）的完整线粒体基因组
Complete mitochondrial genome of the Critically Endangered Smalltooth Sawfish Pristis pectinata (Rajiformes: Pristidae).
作者信息
Chen Xiao, Wiley Tonya, Kyne Peter M, Feutry Pierre
机构信息
a Guangxi Key Lab for Mangrove Conservation and Utilization, Guangxi Mangrove Research Center , Beihai , P.R. China .
b Haven Worth Consulting , Palmetto , FL , USA , and.
出版信息
Mitochondrial DNA A DNA Mapp Seq Anal. 2016 Sep;27(5):3331-2. doi: 10.3109/19401736.2015.1018208. Epub 2015 May 11.
In this study we describe the first complete mitochondrial sequence of the Critically Endangered Smalltooth Sawfish Pristis pectinata. It is 16,802 bp in length and contains all 37 genes found in typical vertebrate mitogenomes. The nucleotide composition of the coding strand is 31.1% A, 26.0% C, 13.1% G and 28.9% T. There are 29 bp overlaps and 38 short intergenic spaces dispersed in the mitogenome. Two start codons (ATG and GTG) and two stop codons (TAG and TAA/T) were found in the protein-coding genes. The length of the 22 tRNA genes range from 67 bp (tRNA(Ser2)) to 75 bp (tRNA(Leu1)). The control region is 1102 bp in length with high A + T (62.0%) and poor G (13.5%) content.
在本研究中，我们描述了极度濒危的小齿锯鳐（Pristis pectinata）的首个完整线粒体序列。它长度为16,802碱基对，包含了典型脊椎动物线粒体基因组中所有的37个基因。编码链的核苷酸组成为：腺嘌呤（A）31.1%、胞嘧啶（C）26.0%、鸟嘌呤（G）13.1%、胸腺嘧啶（T）28.9%。线粒体基因组中存在29个碱基对的重叠以及38个短的基因间隔区。在蛋白质编码基因中发现了两个起始密码子（ATG和GTG）以及两个终止密码子（TAG和TAA/T）。22个tRNA基因的长度范围从67碱基对（tRNA(Ser2)）到75碱基对（tRNA(Leu1)）。控制区长度为1102碱基对，富含腺嘌呤和胸腺嘧啶（A+T含量为62.0%），鸟嘌呤含量较低（13.5%）。
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