西洋の爪のあるカエルのゲノム Xenopus tropicalis tropicalis
Uffe Hellsten1, Richard M Harland, Michael J Gilchrist
1Department of Energy Joint Genome Institute, Walnut Creek, CA 94598, USA. uhellsten@lbl.gov
Science (New York, N.Y.)
|May 1, 2010
まとめ
西部の爪ののゲノム配列は,脊椎動物の発達研究のための貴重なリソースを提供します. ヒトの病気に関連する遺伝子を含む2万以上の遺伝子を明らかにし,ゲノム進化の洞察を提供している.
科学分野:
- ゲノミクスゲノミクスとは
- 発達生物学 発達生物学とは
- 比較ゲノミクスとは
背景:
- 西部の爪のあるカエル (Xenopus tropicalis) は,脊椎動物の発達を研究するための重要なモデル生物です.
- Xenopus laevisよりも優れているのは,管理しやすい遺伝子があるからです.
研究 の 目的:
- Xenopus tropicalis.のゲノム配列アセンブリの草案を提示する.
- タンパク質をコードする遺伝子を注釈し,ゲノム特性を分析する.
主な方法:
- ゲノムシーケンシングとアセンブリ.
- 100万以上の表現されたシーケンスタグを使用した注釈.
- 他の四足類との比較ゲノム分析.
主要な成果:
- Xenopus tropicalisのゲノムアセンブリ草案が作成されました.
- ゲノムには2万以上のタンパク質をコードする遺伝子が含まれており,少なくとも1700のヒト疾患遺伝子のオルトログがあります.
- 移植可能な要素,特にDNAトランポゾンが,ゲノムの3分の1以上を占めています.
- ヒトと鶏のゲノムで,系統特有の染色体再編成とともに,有意な合成が観察されました.
結論:
- Xenopus tropicalisのゲノムは,発達生物学と疾患遺伝子研究のための豊富なリソースです.
- ゲノム構造と遺伝子含有量は,テトラポッドの進化についての洞察を提供します.
- 比較分析は,脊椎動物間で保存され,異なったゲノム特性を強調しています.
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