coenzymes

简明释义

英[ˌkəʊ.enˈzaɪm]美[ˌkoʊ.ɛnˈzaɪm]

n. [生化]辅酶（coenzyme 的复数）

英英释义

单词用法

同义词

反义词

例句

1.The nicotinamide coenzymes can undergo reversible oxidation-reduction reactions with specific substrates in the presence of the appropriate dehydrogenase.

在有适当的脱氢酶时烟酰胺可以对特定的底物进行可逆的氧化-还原反应。

2.The nicotinamide coenzymes can undergo reversible oxidation-reduction reactions with specific substrates in the presence of the appropriate dehydrogenase.

在有适当的脱氢酶时烟酰胺可以对特定的底物进行可逆的氧化-还原反应。

3.These four vitamins act in coenzymes.

这四种维生素在辅酶中起作用。

4.Ribose phosphates are components of various coenzymes and are used by microorganisms in synthesizing histidine.

核糖磷酸基是各种辅的成分，微生物靠它来合成组氨酸。

5.Delineation of the intimate details of the backbone conformation of pyridine nucleotide coenzymes in aqueous solution.

对吡啶核苷酸辅酶在水溶液中的骨干构象的亲密细节描写。

6.The body requires certain coenzymes (辅酶) to convert food into energy.

身体需要某些辅酶将食物转化为能量。

7.Some enzymes cannot function without their specific coenzymes (辅酶).

某些酶在没有特定的辅酶时无法发挥功能。

8.Dietary deficiencies can lead to a lack of essential coenzymes (辅酶), affecting overall health.

饮食缺乏可能导致必要的辅酶缺失，从而影响整体健康。

9.NAD+ is one of the most important coenzymes (辅酶) in cellular respiration.

NAD+是细胞呼吸中最重要的辅酶之一。

10.Vitamins often act as coenzymes (辅酶) in metabolic reactions.

维生素常作为辅酶在代谢反应中发挥作用。

作文

In the intricate world of biochemistry, the role of coenzymes (辅酶) is paramount for the functioning of various enzymatic reactions. These organic molecules are not proteins themselves but are crucial in assisting enzymes to catalyze biochemical reactions. Without coenzymes (辅酶), many vital processes in the body would come to a halt, leading to severe health issues. To understand the significance of coenzymes (辅酶), it is essential to first grasp what enzymes do. Enzymes are biological catalysts that speed up chemical reactions in living organisms. They lower the activation energy required for a reaction to occur, thus facilitating metabolic processes. However, most enzymes require additional non-protein molecules to function effectively, which is where coenzymes (辅酶) come into play.Coenzymes (辅酶) often serve as carriers for chemical groups or electrons during reactions. For instance, one of the most well-known coenzymes (辅酶) is NAD+ (Nicotinamide adenine dinucleotide), which plays a critical role in cellular respiration. During glycolysis and the Krebs cycle, NAD+ accepts electrons and becomes NADH, which is then used in the electron transport chain to produce ATP, the energy currency of the cell. This illustrates how coenzymes (辅酶) are integral to energy production in living organisms.Another important coenzyme (辅酶) is Coenzyme A (CoA), which is vital for the synthesis and oxidation of fatty acids. It also plays a key role in the metabolism of carbohydrates and amino acids. CoA acts by forming acyl-CoA derivatives, which are necessary for various biochemical pathways. The presence of coenzymes (辅酶) like CoA is essential for maintaining metabolic flexibility, allowing organisms to adapt to different nutritional states.Deficiencies in coenzymes (辅酶) can lead to significant health problems. For example, a lack of vitamin B3, which is a precursor for NAD+, can result in pellagra, characterized by symptoms such as dermatitis, diarrhea, and dementia. Similarly, insufficient CoA levels can disrupt fatty acid metabolism, leading to a range of metabolic disorders. This highlights the importance of adequate nutrition in supplying the vitamins and minerals that serve as precursors for coenzymes (辅酶).In summary, coenzymes (辅酶) are indispensable components of numerous biochemical reactions, acting as facilitators that enable enzymes to perform their functions. They are involved in critical processes such as energy production and metabolism, and deficiencies can have serious consequences for health. Understanding the role of coenzymes (辅酶) not only provides insight into the complexity of metabolic pathways but also emphasizes the importance of maintaining a balanced diet rich in essential nutrients to support these vital biochemical agents.

在生物化学的复杂世界中，coenzymes（辅酶）的作用对于各种酶促反应的功能至关重要。这些有机分子本身不是蛋白质，但在帮助酶催化生化反应中至关重要。没有coenzymes（辅酶），身体中的许多重要过程将会停止，从而导致严重的健康问题。要理解coenzymes（辅酶）的重要性，首先必须了解酶的作用。酶是生物催化剂，可以加速生物体内的化学反应。它们降低反应所需的活化能，从而促进代谢过程。然而，大多数酶需要额外的非蛋白分子才能有效工作，这就是coenzymes（辅酶）发挥作用的地方。Coenzymes（辅酶）通常作为化学基团或电子在反应过程中携带。例如，最著名的coenzymes（辅酶）之一是NAD+（烟酰胺腺嘌呤二核苷酸），它在细胞呼吸中发挥关键作用。在糖酵解和克雷布斯循环中，NAD+接受电子并转变为NADH，然后在电子传递链中用于产生ATP，细胞的能量货币。这说明了coenzymes（辅酶）在生物体能量生产中的重要性。另一个重要的coenzyme（辅酶）是辅酶A（CoA），它对脂肪酸的合成和氧化至关重要。它还在碳水化合物和氨基酸的代谢中发挥关键作用。CoA通过形成酰基-CoA衍生物来发挥作用，这些衍生物对各种生化途径是必要的。像CoA这样的coenzymes（辅酶）的存在对于维持代谢灵活性至关重要，使生物体能够适应不同的营养状态。缺乏coenzymes（辅酶）可能导致严重的健康问题。例如，缺乏维生素B3，它是NAD+的前体，可能导致糙皮病，其特征是皮炎、腹泻和痴呆等症状。同样，CoA水平不足可能会干扰脂肪酸代谢，导致一系列代谢障碍。这突显了通过适当营养来补充作为coenzymes（辅酶）前体的维生素和矿物质的重要性。总之，coenzymes（辅酶）是许多生化反应中不可或缺的组成部分，充当促进剂，使酶能够执行其功能。它们参与关键过程，如能量生产和代谢，缺乏会对健康造成严重后果。理解coenzymes（辅酶）的作用不仅提供了对代谢途径复杂性的洞察，还强调了保持富含必需营养素的均衡饮食以支持这些重要生化因子的必要性。