pilin構造遺伝子を含む遺伝子変換は, pilus+と相関し, pilus- Neisseria gonorrhoeaeにおける変化と均衡しています
Cell
|October 24, 1986
まとめ
ネイセリア・ゴノレアにはピルス・フェーズが急速に変化します. この研究は,ピルスを発現する状態から発現しない状態への可逆的な移行は,ピルスの構造遺伝子内の内遺伝的再結合と遺伝子変換を含むことを明らかにしています.
科学分野:
- 微生物学 微生物学とは
- 分子生物学は分子生物学である.
- 遺伝学 遺伝学とは
背景:
- ネイセリア・ゴンノレア (Gc) は,ピルス発現 (pilus+) と非発現 (pilus-) 状態を頻繁に切り替える.
- pilus-Gcのサブセットのみがpilus+フェノタイプを取り戻すことができ,逆転性の特定のメカニズムを示唆しています.
研究 の 目的:
- pilus+Gcと特定のpilus-変種 (P-rp+現象型) の間の可逆相移行の基礎となる分子機構を調査する.
- ピルス・フェーズ・バリエーションにおける内遺伝子再結合と遺伝子変換の役割を明らかにする.
主な方法:
- ピルスの変種 (P-rp+) でのピリンmRNAとポリペプチドの分析,ユニークな"アセンブリミセンセ"変異.
- pilus+とP-rp+フェノタイプ間の移行に関与するDNA配列の検査.
主要な成果:
- Gcにおける可逆的なピルス相移行は,内遺伝的再結合によって引き起こされる可能性があります.
- 同性DNA配列の非相互交換は,静かな,保存された部分ピリン遺伝子と発現したピリン遺伝子ロカスの間に発生します.
- このプロセスは,pilus+フェノタイプの回復につながります.
結論:
- ゴノコックスのピルス・フェーズ・バリエーションは,ピルス・アンチジェニック・バリエーションに似ており,ピリン構造的遺伝子発現の場所での遺伝子変換によって発生することがあります.
- この発見は,ニセリア・ゴノレアにおけるピルス発現の可逆性について分子的な説明を提供する.
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