Stepwise evolution during ribosomal RNA gene cluster formation in Archaea

Material type: 文書・図像類

Author: 小林, 朝紀

Publisher: 慶應義塾大学湘南藤沢学会

Publication date: 2014

Material Format: Digital

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Note (General)：: type:textFunctionally related genes are often located closely to each other in the genome. Such characteristics could be derived through evolutionary ...

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Material Type: 文書・図像類
Title: Stepwise evolution during ribosomal RNA gene cluster formation in Archaea
Author/Editor: 小林, 朝紀
Author Heading: 小林, 朝紀
Publication, Distribution, etc.: 慶應義塾大学湘南藤沢学会
Publication Date: 2014
Publication Date (W3CDTF): 2014
Periodical title: 生命と情報
No. or year of volume/issue: 21
Volume: 21
Pages: 133-136
Text Language Code: eng
Subject Heading: Archaea,ribosomal RNA,gene cluster,evolution
Target Audience: 一般
Note (General): type:text
Functionally related genes are often located closely to each other in the genome. Such characteristics could be derived through evolutionary processes. As a model case, I focused on the evolution of ribosomal RNA (rRNA) gene clusters in Archaea. Since a comprehensive analysis of the evolution of rRNA gene cluster formations has not been performed, the knowledge of them is still limited. Here, to understand the evolutionary changes of rRNA gene clusters in Archaea, a computational analysis of their patterns, localisation, and organisation on the complete archaeal genomes was performed. First, rRNA gene clusters were comprehensively analysed by characterising the distribution of rRNA genes and the distance between their adjacent genes in the archaeal genomes. The results showed that rRNA gene clusters mainly consist of 16S-23S in Crenarchaeota, whereas they mainly consist of 16S-23S-5S in Euryarchaeota. Notably, several rRNA gene clusters contained tRNA genes (e.g., 16S-tRNA-23S-5S) in Euryarchaeota. Moreover, the results suggest that, after the acquisition of the 16S-tRNA-23S-5S rRNA gene clusters in Euryarchaeota, either the whole cluster or only the 5S rRNA in the cluster was duplicated. Finally, a possible model explaining the evolutionary pathway for rRNA gene cluster formation in Archaea is proposed. This model provides valuable insights on the evolutionary process shaping archaeal genome organisation during early stages of life.
慶應義塾大学湘南藤沢キャンパス先端生命科学研究会 2014年度学生論文集卒業論文ダイジェスト
identifier:SFC-RM2014-003
identifier:請求記号:
Source: https://koara.lib.keio.ac.jp/xoonips/modules/xoonips/download.php?koara_id=KO92001004-00000021-0133
https://koara.lib.keio.ac.jp/xoonips/modules/xoonips/download.php?koara_id=KO92001004-00000021-0133
Access Restrictions: 限定公開
Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）
https://irdb.nii.ac.jp
Original Data Provider (Database): 慶應義塾大学 : 慶應義塾大学学術情報リポジトリ