相关实验视频

Updated: Jul 2, 2025

Extraction of Hemocytes from Drosophila melanogaster Larvae for Microbial Infection and Analysis

Extraction of Hemocytes from Drosophila melanogaster Larvae for Microbial Infection and Analysis

Published on: May 24, 2018

在无脊椎动物虹色病毒中对外核酶基因的子使用偏差的分析

Yeşim Aktürk Dizman¹

¹Department of Biology, Faculty of Arts and Sciences, Recep Tayyip Erdogan University, 53100, Rize, Türkiye.

|February 25, 2024

概括

无脊椎动物虹色病毒 (IIVs) 在它们的外核酶基因中显示出低密码使用偏差,表明了超出简单突变压力的进化影响. 这项研究探讨了IIV进化的遗传基础.

科学领域:

病毒学病毒学
分子生物学分子生物学
遗传学是一个遗传学.

背景情况:

无脊椎动物虹色病毒 (IIV) 是Iridoviridae家族中的双链DNA病毒.
在无脊椎动物宿主中,IIVs会引起不同严重程度的疾病.
使用偏差 (CUB) 分析对于理解物种的遗传和进化特征至关重要.

研究的目的:

研究10种无脊椎动物虹色病毒 (IIVs) 的外核酶基因中的子使用偏差 (CUB).
阐明影响IIV中CUB的因素,有助于理解IIV的演变.

主要方法:

分析核酸含量,有效编码子数 (ENC),编码子适应指数 (CAI) 和相对同义编码子使用率 (RSCU).
使用ENC图,中立图和平价规则2图来评估CUB的影响.
检查了来自10个不同的IIV的外核酶基因.

主要成果:

IIVs外核酶基因表现出高的A/T核酸含量.
在基于ENC分析的IIVs外核酶基因中观察到低编码子使用偏差.
突变压力和其他因素,包括自然选择,二核酸成分和芳香度,在IIV中形成了CUB.

结论:

这项研究揭示了IIVs外核酶基因的低编码子使用偏差.
研究结果表明,突变压力之外的进化力量,如自然选择,在这些病毒中显著影响了CUB.
这项研究增强了对无脊椎动物虹色病毒的进化动态的理解.

关键词:

在Codon的使用中,存在偏见.外核酶是外核酶的一种.无脊椎动物虹色病毒突变压力是变化的压力.自然选择是自然选择.

更多相关视频

Use of a Recombinant Mosquito Densovirus As a Gene Delivery Vector for the Functional Analysis of Genes in Mosquito Larvae

Use of a Recombinant Mosquito Densovirus As a Gene Delivery Vector for the Functional Analysis of Genes in Mosquito Larvae

Published on: October 6, 2017

Analysis of Group IV Viral SSHHPS Using In Vitro and In Silico Methods

Analysis of Group IV Viral SSHHPS Using In Vitro and In Silico Methods

Published on: December 21, 2019

相关概念视频

Leaky Scanning

Leaky Scanning

During most eukaryotic translation processes, the small 40S ribosome subunit scans an mRNA from its 5' end until it encounters the first start AUG codon. The large 60S ribosomal subunit then joins the smaller one to initiate protein synthesis. The location of the translation initiation is largely determined by the nucleotides near the start codon as there may be multiple translation initiation sites present on the mRNA. Marilyn Kozak discovered that the sequence RCCAUGG (where R...

Exon Recombination

Exon Recombination

The evolution of new genes is critical for speciation. Exon recombination, also known as exon shuffling or domain shuffling, is an important means of new gene formation. It is observed across vertebrates, invertebrates, and in some plants such as potatoes and sunflowers. During exon recombination, exons from the same or different genes recombine and produce new exon-intron combinations, which might evolve into new genes.
Exon shuffling follows “splice frame rules.” Each exon...

Cis-regulatory Sequences

Cis-regulatory Sequences

Cis-regulatory sequences are short fragments of non-coding DNA that are present on the same chromosomes as the genes that they regulate. These fragments serve as binding sites for transcriptional regulators, proteins that are responsible for controlling gene transcription and differential gene expression across cell types in eukaryotes. Cis-regulatory sequences can be close to the gene of interest or thousands of bases away in the DNA sequence; however, those sequences that are further away are...