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Updated: Jul 20, 2026

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Self-assembly of Complex Two-dimensional Shapes from Single-stranded DNA Tiles
Published on: May 8, 2015
遺伝子複製と融合によるベータ/アルファ・バレル・スカファードの進化の構造的証拠
1European Molecular Biology Laboratory (EMBL) Hamburg Outstation, EMBL c/o Deutsches Elektronen- Synchrotron (DESY), Notkestrasse 85, D-22603 Hamburg, Germany.
まとめ
2つのヒスティジン生物合成タンパク質は,遺伝子の複製と融合を通じて共通の祖先から進化した. 祖先のドメインは目に見えないが,タンパク質発見のための配列と構造分析を使用して推論された.
科学分野:
- バイオケミストリー バイオケミストリー
- 構造生物学 構造生物学とは
- タンパク質の進化について
背景:
- ヒスティジン生物合成経路タンパク質はベータ/アルファバレル構造を有しています.
- これらのタンパク質は,特徴的な二重繰り返しのパターンを表しています.
研究 の 目的:
- ヒスティジン生物合成タンパク質の進化的起源を調査する.
- タンパク質の進化における遺伝子複製と融合の役割を理解する.
- 祖先のタンパク質ドメインを検出する方法を特定する.
主な方法:
- 2つのヒスティジン生物合成タンパク質の原子構造の分析.
- 祖先の領域を推論するための配列分析.
- サブドメインの構造を特定するための構造分析.
主要な成果:
- タンパク質には,二重の繰り返しパターンを持つベータ/アルファバレルの特徴があります.
- 証拠は,遺伝子の複製と融合を通して,共通の半バレルの祖先から進化を示唆しています.
- 祖先の領域は直接的に観察できるものではなく,推測できるものです.
結論:
- この研究は,ヒスティジン生物合成タンパク質の進化史を推論している.
- サブドメイン構造の検出は,ゲノム配列内の関連するタンパク質を特定するのに役立ちます.
- このアプローチは,機能的かつ構造的に類似したタンパク質の探求を容易にする可能性があります.
関連する概念動画
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Occasionally these regions can be adapted to take on new roles within the organism, becoming novel genes...
Occasionally these regions can be adapted to take on new roles within the organism, becoming novel genes...
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The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order to...
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Gene Duplication and Divergence
The seminal work of Ohno in 1970 popularized the idea of gene duplication and divergence. DNA sequence comparison studies reveal that a large portion of the genes in bacteria, archaebacteria, and eukaryotes was generated by gene duplication and divergence, indicating its critical role in evolution.
The duplicated copies of the gene are called Paralogs. Paralogs with similar sequences and functions form a gene family. Across several species, a large number of gene families are characterized.
The duplicated copies of the gene are called Paralogs. Paralogs with similar sequences and functions form a gene family. Across several species, a large number of gene families are characterized.
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 has three reading...
Exon shuffling follows “splice frame rules.” Each exon has three reading...
Protein Complexes with Interchangeable Parts
Groups of proteins may form a complex where each protein in this complex has a different role in the overall execution of the complex’s function. Often some of the proteins in the complex can be replaced by a closely related variant to give a complex that contains many of the same components yet is functionally distinct.
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order to...
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order to...

