巨红海胆（Mesocentrotus franciscanus，球海胆科，海胆纲）的线粒体基因组结构
Mitochondrial genome architecture of the giant red sea urchin Mesocentrotus franciscanus (Strongylocentrotidae, Echinoida).
作者信息
Gaitán-Espitia Juan Diego, Hofmann Gretchen E
机构信息
a Instituto de Ciencias Ambientales y Evolutivas, Universidad Austral de Chile , Valdivia , Chile and.
b Department of Ecology , Evolution and Marine Biology, University of California, Santa Barbara , Santa Barbara , CA , USA.
出版信息
Mitochondrial DNA A DNA Mapp Seq Anal. 2016;27(1):591-2. doi: 10.3109/19401736.2014.908359. Epub 2014 Apr 14.
The complete mitochondrial genome of the Californian giant red sea urchin Mesocentrotus franciscanus has been determined. It has a length of 15,650 bp and contains the same 37 genes found in other metazoans (13 protein-coding genes, 22 tRNA genes, and two rRNA genes). Only five tRNA genes and the Nad6 gene are coded on the minus strand. There were 14 identified small intergene regions (2 to 24 bp) and a large non-coding region (125 bp) located between the tRNA-T and tRNA-P. The overall base composition of this genome is 29.8% A, 27.6% T, 29.7% C, and 17.5% G, with a slight A + T bias of 59.4%. The most frequent start codon is ATG (11 genes) whereas TAA is the most frequent stop codon (10 genes). Overall, gene arrangement pattern, gene content and genome organization is similar to other echinoids.
加州巨型红海胆（Mesocentrotus franciscanus）的完整线粒体基因组已被测定。其长度为15,650碱基对，包含与其他后生动物相同的37个基因（13个蛋白质编码基因、22个tRNA基因和两个rRNA基因）。只有五个tRNA基因和Nad6基因在负链上编码。在tRNA-T和tRNA-P之间有14个已鉴定的小基因间隔区（2至24碱基对）和一个大的非编码区（125碱基对）。该基因组的总体碱基组成为29.8%A、27.6%T、29.7%C和17.5%G，A+T略有偏向，为59.4%。最常见的起始密码子是ATG（11个基因），而TAA是最常见的终止密码子（10个基因）。总体而言，基因排列模式、基因含量和基因组组织与其他海胆类相似。
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