ヒトの赤血球転写因子の構造と進化
C D Trainor1, T Evans, G Felsenfeld
1Laboratory of Molecular Bikology, NIDDK, Bethesda, Maryland 20892.
Nature
|January 4, 1990
まとめ
研究者らは,赤血球の発達に不可欠なヒトのEryf 1遺伝子cDNAをクローンした. この転写因子は,
科学分野:
- 分子生物学は分子生物学である.
- 遺伝学 遺伝学とは
- 血液学 ヘマトロジ
背景:
- 脊椎動物の赤血球細胞は,エリーフ1,GF-1,またはNF-E1.1として知られる組織特異の転写因子を利用します.
- この因子の結合部位は,グロービン遺伝子ファミリーおよび他の赤色球体に特異的な遺伝子の規制領域に多く見られます.
- ヒト因子の変異部位への機能不全の結合は,胎児ヘモグロビン (HPFH) の遺伝的持続と関連しています.
研究 の 目的:
- ヒトのEryf 1をコードする遺伝子の補完DNA (cDNA) のクローニングを報告する.
- 人間のEryf 1遺伝子の配列を,鶏とマウスの配列と比較する.
主な方法:
- 人間のEryf 1 cDNAのクローニング.
- 人間,鶏,マウスのEryf 1cDNAの配列分析と比較.
主要な成果:
- 2本の"指"モチーフを含むヒトのEryf 1cDNAの中央3分の1は,鶏とマウスのバージョンと非常に類似しています.
- 人間のタンパク質のアミノおよびカルボキシ末端領域は,マウスと類似しているが,鶏肉と著しく異なる.
- 進化論的分析によると,Eryf 1因子は,異なる領域を持つ共通の前駆体から進化し,異なる速度で分岐した.
結論:
- 人間のEryf 1のクローニングは,赤血球遺伝子調節を研究するための重要なツールを提供します.
- 比較分析により,脊椎動物におけるエリーフ1の進化の経路が保存され,異なることが明らかになった.
- エリフ1の構造と進化を理解することで,赤血球の発達や,HPFHのような関連疾患についての洞察が得られます.
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