文献检索文档翻译深度研究
Suppr Zotero 插件Zotero 插件
邀请有礼套餐&价格历史记录

新学期,新优惠

限时优惠:9月1日-9月22日

30天高级会员仅需29元

1天体验卡首发特惠仅需5.99元

了解详情
不再提醒
插件&应用
Suppr Zotero 插件Zotero 插件浏览器插件Mac 客户端Windows 客户端微信小程序
高级版
套餐订阅购买积分包
AI 工具
文献检索文档翻译深度研究
关于我们
关于 Suppr公司介绍联系我们用户协议隐私条款
关注我们

Suppr 超能文献

核心技术专利:CN118964589B侵权必究
粤ICP备2023148730 号-1Suppr @ 2025

澳大利亚锥体虫的动基体 DNA 与克氏锥虫和利什曼原虫具有共同特征。

The kinetoplast DNA of the Australian trypanosome, Trypanosoma copemani, shares features with Trypanosoma cruzi and Trypanosoma lewisi.

机构信息

School of Veterinary and Life Sciences, Murdoch University, South Street, Murdoch, WA 6150, Australia.

Department of Microbiology and Molecular Genetics and the Kuvin Center for the Study of Infectious and Tropical Diseases, The Hebrew University- Hadassah Medical School, Jerusalem, Israel.

出版信息

Int J Parasitol. 2018 Aug;48(9-10):691-700. doi: 10.1016/j.ijpara.2018.02.006. Epub 2018 May 17.


DOI:10.1016/j.ijpara.2018.02.006
PMID:29778329
Abstract

Kinetoplast DNA (kDNA) is the mitochondrial genome of trypanosomatids. It consists of a few dozen maxicircles and several thousand minicircles, all catenated topologically to form a two-dimensional DNA network. Minicircles are heterogeneous in size and sequence among species. They present one or several conserved regions that contain three highly conserved sequence blocks. CSB-1 (10 bp sequence) and CSB-2 (8 bp sequence) present lower interspecies homology, while CSB-3 (12 bp sequence) or the Universal Minicircle Sequence is conserved within most trypanosomatids. The Universal Minicircle Sequence is located at the replication origin of the minicircles, and is the binding site for the UMS binding protein, a protein involved in trypanosomatid survival and virulence. Here, we describe the structure and organisation of the kDNA of Trypanosoma copemani, a parasite that has been shown to infect mammalian cells and has been associated with the drastic decline of the endangered Australian marsupial, the woylie (Bettongia penicillata). Deep genomic sequencing showed that T. copemani presents two classes of minicircles that share sequence identity and organisation in the conserved sequence blocks with those of Trypanosoma cruzi and Trypanosoma lewisi. A 19,257 bp partial region of the maxicircle of T. copemani that contained the entire coding region was obtained. Comparative analysis of the T. copemani entire maxicircle coding region with the coding regions of T. cruzi and T. lewisi showed they share 71.05% and 71.28% identity, respectively. The shared features in the maxicircle/minicircle organisation and sequence between T. copemani and T. cruzi/T. lewisi suggest similarities in their process of kDNA replication, and are of significance in understanding the evolution of Australian trypanosomes.

摘要

动基体 DNA(kDNA)是动基体生物的线粒体基因组。它由几十个大环和几千个小环组成,所有这些小环都通过拓扑方式连接在一起,形成一个二维 DNA 网络。小环在物种间大小和序列上存在异质性。它们都含有一个或几个保守区域,这些区域包含三个高度保守的序列块。CSB-1(10 个碱基对序列)和 CSB-2(8 个碱基对序列)在物种间的同源性较低,而 CSB-3(12 个碱基对序列)或通用小环序列在大多数动基体生物中是保守的。通用小环序列位于小环的复制起点,是 UMS 结合蛋白的结合位点,该蛋白参与动基体生物的生存和毒力。在这里,我们描述了 Trypanosoma copemani 的 kDNA 的结构和组织,该寄生虫已被证明可以感染哺乳动物细胞,并与濒危的澳大利亚有袋动物——沃利(Bettongia penicillata)的急剧减少有关。深度基因组测序表明,T. copemani 有两类小环,它们在保守序列块中的序列同一性和组织与 Trypanosoma cruzi 和 Trypanosoma lewisi 的小环相同。获得了 T. copemani 大环的一个包含整个编码区的 19,257bp 部分区域。对 T. copemani 整个大环编码区与 T. cruzi 和 T. lewisi 编码区的比较分析表明,它们的同一性分别为 71.05%和 71.28%。T. copemani 与 T. cruzi/T. lewisi 之间大环/小环组织和序列的共享特征表明它们在 kDNA 复制过程中有相似之处,这对于理解澳大利亚锥虫的进化具有重要意义。

相似文献

[1]
The kinetoplast DNA of the Australian trypanosome, Trypanosoma copemani, shares features with Trypanosoma cruzi and Trypanosoma lewisi.

Int J Parasitol. 2018-5-17

[2]
The Complete Mitochondrial DNA of : Maxicircles and Minicircles.

Front Cell Infect Microbiol. 2021

[3]
Analysis of the mitochondrial maxicircle of Trypanosoma lewisi, a neglected human pathogen.

Parasit Vectors. 2015-12-30

[4]
Novel insertions in the mitochondrial maxicircle of , a mouse trypanosome.

Parasitology. 2022-10

[5]
Kinetoplast DNA from Trypanosoma rangeli contains two distinct classes of minicircles with different size and molecular organization.

Mol Biochem Parasitol. 1994-10

[6]
A population study of the minicircles in Trypanosoma cruzi: predicting guide RNAs in the absence of empirical RNA editing.

BMC Genomics. 2007-5-24

[7]
Sequence diversity in the kinetoplast DNA minicircles of Trypanosoma cruzi.

Mol Biochem Parasitol. 1986-10

[8]
Characterization of kinetoplast DNA minicircles in Trypanosoma rangeli.

Mol Biochem Parasitol. 1994-1

[9]
Conserved sequence blocks in kinetoplast minicircles from diverse species of trypanosomes.

Mol Cell Biol. 1989-3

[10]
PCR-based identification of Trypanosoma lewisi and Trypanosoma musculi using maxicircle kinetoplast DNA.

Acta Trop. 2017-7

引用本文的文献

[1]
Mitochondrial DNA Structure in .

Pathogens. 2025-1-14

[2]
Molecular Markers for the Phylogenetic Reconstruction of : A Quantitative Review.

Pathogens. 2025-1-14

[3]
UMSBP2 is chromatin remodeler that functions in regulation of gene expression and suppression of antigenic variation in trypanosomes.

Nucleic Acids Res. 2023-6-23

[4]
Identification of a conserved maxicircle and unique minicircles as part of the mitochondrial genome of Leishmania martiniquensis strain PCM3 in Thailand.

Parasit Vectors. 2022-12-12

[5]
Assembly of a Large Collection of Maxicircle Sequences and Their Usefulness for Taxonomy and Strain Typing.

Genes (Basel). 2022-6-15

[6]
Molecular and Functional Characteristics of DNA Polymerase Beta-Like Enzymes From Trypanosomatids.

Front Cell Infect Microbiol. 2021

[7]
The Complete Mitochondrial DNA of : Maxicircles and Minicircles.

Front Cell Infect Microbiol. 2021

[8]
Novel organization of mitochondrial minicircles and guide RNAs in the zoonotic pathogen Trypanosoma lewisi.

Nucleic Acids Res. 2020-9-25

[9]
Mitochondrial Genomes: Maxicircle Structure and Heterogeneity of Minicircles.

Genes (Basel). 2019-9-26

[10]
Evolutionary Insight into the Trypanosomatidae Using Alignment-Free Phylogenomics of the Kinetoplast.

Pathogens. 2019-9-18

文献AI研究员

20分钟写一篇综述,助力文献阅读效率提升50倍

立即体验

用中文搜PubMed

大模型驱动的PubMed中文搜索引擎

马上搜索

推荐工具

医学文档翻译智能文献检索