LDL受容体ファミリーを折り畳みに誘導する
Joachim Herz1, Peter Marschang
1Department of Molecular Genetics, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390, USA. joachim.herz@utsouthwestern.edu
Cell
|February 13, 2003
まとめ
保存されたチャペロンであるボカ/MESDは,低密度リポタンパク質 (LDL) 受容体ファミリーのタンパク質を細胞表面に輸送するのに不可欠です. この発見は,新しいLDL受容体の構造データとともに,これらの重要な多機能受容体の合成と取引を明確にします.
科学分野:
- 細胞生物学 細胞生物学
- 分子生物学は分子生物学である.
- バイオケミストリー バイオケミストリー
背景:
- 低密度脂質タンパク質 (LDL) 受容体ファミリータンパク質は,様々な生理学的および発達的プロセスにおいて重要な役割を果たします.
- これらの受容体の効率的な細胞表面輸送は,その機能にとって極めて重要です.
研究 の 目的:
- LDL受容体ファミリータンパク質の密輸におけるBoca/MESDの役割を調査する.
- 多機能性LDL受容体の細胞表面輸送を制御するメカニズムを解明する.
主な方法:
- Boca/MESD機能の研究に遺伝学および生化学的アプローチを使用しました.
- LDL受容体の最近の原子構造データと統合された発見.
主要な成果:
- 特定されたボカ/MESDは,LDLRファミリーのタンパク質輸送に不可欠な,高度に保存されたチャペロンである.
- 細胞表面にLDLRファミリータンパク質を届けるためのBoca/MESDの必要性を実証した.
結論:
- Boca/MESDは,LDL受容体ファミリータンパク質の密輸の重要な調節剤である.
- LDL受容体構造とBoca/MESD機能に関する新しい洞察は,受容体合成と輸送経路を明らかにする.
関連する概念動画
Receptor-mediated Endocytosis
Overview
Receptor-mediated Endocytosis
Receptor-mediated endocytosis is when bulk amounts of specific molecules are imported into a cell after binding to cell surface receptors. The molecules bound to these receptors are taken into the cell through inward folding of the cell surface membrane, which is eventually pinched off into a vesicle within the cell. Structural proteins, such as clathrin, coat the budding vesicle.
Clathrin-Mediated Endocytosis of LDL
One well-characterized example of receptor-mediated endocytosis is the...
Clathrin-Mediated Endocytosis of LDL
One well-characterized example of receptor-mediated endocytosis is the...
Lipid-Lowering Drugs: Statins and Miscellaneous Agents
Hyperlipidemia, a medical condition often referred to as high cholesterol, is characterized by abnormally elevated levels of lipids in the bloodstream. When present in excess, these lipids, specifically cholesterol and triglycerides, can lead to serious health complications, often involving cardiovascular diseases. Illnesses like atherosclerosis, heart attacks, and pancreatitis have all been linked to untreated hyperlipidemia. This means controlling and regulating cholesterol and triglyceride...
Cholesterol: Significance and Regulation
Although not a source of energy, cholesterol plays a significant role as a foundational structure for bile salts, steroid hormones, and vitamin D, as well as being a crucial component of plasma membranes. Approximately 15% of blood cholesterol is derived from our diet, with the remainder synthesized from acetyl CoA by the liver and intestines. Cholesterol is eliminated from the body through its conversion into bile salts, which are eventually discarded in the feces.
Considering cholesterol and...
Considering cholesterol and...
Atherosclerosis I: Introduction
Atherosclerosis is a progressive disorder characterized by the buildup of plaques on the arterial inner wall, causing them to narrow and harden over time. These plaques comprise lipids, calcium, blood components, carbohydrates, and fibrous tissue. The process primarily affects the intima of large and medium-sized arteries, reducing blood flow in any artery.Etiology and risk factorsThe cause of atherosclerosis is multifactorial, involving a complex interplay among endothelial injury, lipid...
Lipid Catabolism
Triglycerides serve as crucial long-term energy storage molecules in microorganisms, providing a dense source of metabolic energy. Their breakdown is mediated by lipases, which hydrolyze triglycerides into glycerol and free fatty acids. Each of these components follows distinct metabolic pathways, ultimately contributing to ATP synthesis and cellular energy homeostasis.Glycerol MetabolismGlycerol, released from triglyceride hydrolysis, is phosphorylated by glycerol kinase to form...


