了解和利用碳水化合物活性酶的进展
Rajneesh K Bains1, Seyed Amirhossein Nasseri1, Jacob F Wardman2
1Department of Chemistry, University of British Columbia, Vancouver, Canada; Michael Smith Laboratories, University of British Columbia, Vancouver, Canada.
Current opinion in chemical biology
|April 24, 2024
概括
碳水化合物活性酶 (CAZymes) 的新发现正在推进治疗和生物燃料等领域. 更好的理解和新的结构正在推动与甘氨酸相关应用的创新.
科学领域:
- 生物化学 生物化学
- 葡萄糖生物学 葡萄糖生物学
- 酶学 是一种酶学.
背景情况:
- 碳水化合物活性酶 (CAZymes) 对于所有生物体中的甘氨酸代谢至关重要.
- 最近基因组学,元基因组学和冷电子显微镜 (cryo-EM) 的进展加速了新型CAZymes的发现.
- 了解CAZyme机制对于各种生物技术应用至关重要.
研究的目的:
- 突出最近对CAZyme机制的理解取得的重大进展.
- 展示CAZymes在各种科学和工业领域不断扩大的应用.
- 提供CAZyme新结构和功能的概述.
主要方法:
- 为新型CAZyme发现进行基因组和元基因组分析.
- 用于获取和表征新酶的基因合成.
- 低温电子显微镜 (cryo-EM) 用于对CAZymes的结构阐明,特别是跨膜糖系转移酶.
- 关于CAZyme应用的最新文献的审查.
主要成果:
- 访问越来越多的具有已知和新型催化机制的CAZymes.
- 通过cryo-EM,对关键酶的结构进行解,包括跨膜糖转移酶.
- 展示治疗,器官移植,食品和生物燃料领域的进展和潜力.
- 识别新的CAZyme功能和应用程序.
结论:
- 最近CAZyme研究的突破正在扩大我们对甘氨酸生物学的基本理解.
- 新的CAZymes及其结构洞察力正在使应用领域取得重大进展.
- 继续探索CAZymes有望在多个学科中进一步创新.
相关概念视频
Introduction to Carbohydrates
12.6K
Carbohydrates, proteins, and fats are the primary macronutrients in the human diet. However, carbohydrates are the most favored source of energy in the body. They can be found in a wide variety of foods, including whole grains, fruit, and vegetables, in various forms, such as sugars, starch, and dietary fiber. Based on their structure, carbohydrates are classified into three main classes— monosaccharides, disaccharides, and polysaccharides. The body's cells can only utilize simple...
12.6K
Carbohydrate Digestion
114.5K
Carbohydrate digestion and metabolism break down simple and complex carbohydrates from food into saccharides (i.e., sugars) for the body to use as energy. Carbohydrate digestion starts in the mouth during mastication, or chewing. The masticated carbohydrates remain intact in the stomach. Digestion resumes in the duodenum of the small intestine, where pancreatic alpha-amylase and brush border enzymes of the microvilli convert complex carbohydrates to monosaccharides. Finally, the monosaccharides...
114.5K
Carbohydrate Metabolism
11.1K
Carbohydrates are polymers composed of molecules containing atoms of carbon, hydrogen and oxygen. One gram of carbohydrate can provide four kilo-calories of energy, which makes it the most efficient instant energy source.
Starch accounts for approximately 60% of the carbohydrates consumed by humans. Since amylase enzymes cannot function in the stomach's acidic environment, starch can only be digested in the mouth and small intestine. Simple sugars are found naturally in milk and fruits in...
Starch accounts for approximately 60% of the carbohydrates consumed by humans. Since amylase enzymes cannot function in the stomach's acidic environment, starch can only be digested in the mouth and small intestine. Simple sugars are found naturally in milk and fruits in...
11.1K
Overview of Carbohydrate Metabolism
964
Carbohydrate metabolism is a fundamental biochemical process that ensures a constant supply of energy to living cells. The most important carbohydrate is glucose, which can be broken down via glycolysis to enter into the Krebs cycle and eventually lead to the production of ATP through oxidative phosphorylation.
Glucose transport into cells is facilitated by a family of transport proteins called GLUT (Glucose Transporters). GLUT4 is the primary glucose transporter for insulin-stimulated glucose...
Glucose transport into cells is facilitated by a family of transport proteins called GLUT (Glucose Transporters). GLUT4 is the primary glucose transporter for insulin-stimulated glucose...
964
Carbohydrate Absorption
687
Carbohydrates are essential macronutrients that serve as the body's primary energy source. Their digestion begins in the mouth, where salivary amylase partially breaks down complex carbohydrates such as starch into smaller oligosaccharides. This mechanical and enzymatic activity prepares carbohydrates for further processing in the gastrointestinal tract.
After being swallowed, the partially digested carbohydrates mix with gastric secretions in the stomach. However, the acidic environment...
After being swallowed, the partially digested carbohydrates mix with gastric secretions in the stomach. However, the acidic environment...
687
Introduction to Enzymes
17.6K
The use of enzymes by humans dates to 7000 BCE. Humans first used enzymes to ferment sugars and produce alcohol without knowing that this was an enzyme-catalyzed reaction. Wilhelm Kuhne coined the term 'enzyme' in 1877 from the Greek words ‘en’ meaning ‘in’ or ‘within’ and ‘zyme’ meaning ‘yeast.’
Most enzymes are proteins that speed up biochemical reactions without being consumed. Enzymes contain one or more active sites that...
Most enzymes are proteins that speed up biochemical reactions without being consumed. Enzymes contain one or more active sites that...
17.6K


