関連する実験動画
Updated: May 12, 2026

16:49
Two Methods of Heterokaryon Formation to Discover HCV Restriction Factors
Published on: July 16, 2012
VP16アクセサリータンパク質HCFは,大型前駆タンパク質から加工されたポリペプチドの一族です
A C Wilson1, K LaMarco, M G Peterson
1Cold Spring Harbor Laboratory, New York 11724.
Cell
|July 16, 1993
まとめ
ヘルペス・シンプレックスウイルス (HSV) トランスアクティベータータンパク質VP16は,転写活性化のために宿主細胞因子 (HCF) を必要とします. この研究は,HCFが処理を通じて単一の遺伝子から派生した複数のポリペプチドとして存在することを明らかにしています.
科学分野:
- ウイルス学 ウイルス学 ウイルス学
- 分子生物学は分子生物学である.
- 遺伝子規制 遺伝子規制
背景:
- ヘルペス・シンプレックスウイルス (HSV) の早期の遺伝子転写はVP16トランザクティベーターによって制御されます.
- VP16の活動は,宿主細胞因子 (HCF) とOct-1.0との相互作用に依存しています.
研究 の 目的:
- ホスト細胞因子 (HCF) の分子性質と起源を調査する.
- 異なるHCFポリペプチド形態の関係を解明する.
主な方法:
- 感染した細胞におけるHCFポリペプチド組成の分析.
- cDNAクローニングとヒト細胞におけるHCFの発現.
- HCF.内の新しい26アミノ酸の繰り返しモチーフの特定.
主要な成果:
- ホスト細胞因子 (HCF) は,単一の遺伝子によって暗号化された複数の関連ポリペプチド (110-300 kd) を含む.
- 新しい26アミノ酸の繰り返しモチーフはHCF.に8回存在する.
- 大きなHCFの開いた読み取りフレームを表現すると,大きなHCFポリペプチドと小さなHCFポリペプチドの両方が生成されます.
結論:
- より小さなHCFポリペプチドは,より大きな300kd形態から加工を通じて導出されます.
- この発見は,HCFの構造的複雑性と翻訳後の規制についての洞察を提供します.
関連する概念動画
Protein Complex Assembly
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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...
RNA Polymerase II Accessory Proteins
Proteins that regulate transcription can do so either via direct contact with RNA Polymerase or through indirect interactions facilitated by adaptors, mediators, histone-modifying proteins, and nucleosome remodelers. Direct interactions to activate transcription is seen in bacteria as well as in some eukaryotic genes. In these cases, upstream activation sequences are adjacent to the promoters, and the activator proteins interact directly with the transcriptional machinery. For example, in...

