actomyosin

简明释义

英[ˌæktəʊˈmaɪəsɪn]美[ˌæktoʊˈmaɪəˌsɪn]

n. [生化] 肌动球蛋白；肌纤凝蛋白

英英释义

单词用法

同义词

反义词

例句

1.A muscle is a very large number of fibers close together, containing two different substances myosin and actomyosin.

肌肉是由极多的彼此紧帖的纤维所组成的，它含有两种不同的物质：肌球蛋白和肌动球蛋白。

2.The effects of trehalose on actomyosin of salted pike eel muscle were first investigated.

本实验研究了海藻糖对盐渍海鳗肌动球蛋白的影响。

3.A protein found in muscle cells that, together with actin, forms actomyosin, which provides the contractile mechanism of muscle tissue.

肌肉细胞中的一种蛋白，它与肌动蛋白一起组成肌动球蛋白，引起肌肉组织收缩。

4.A protein found in muscle cells that, together with actin, forms actomyosin, which provides the contractile mechanism of muscle tissue.

肌肉细胞中的一种蛋白，它与肌动蛋白一起组成肌动球蛋白，引起肌肉组织收缩。

5.The sliding filament theory explains how actomyosin facilitates muscle contraction.

滑动丝理论解释了肌动肌球蛋白如何促进肌肉收缩。

6.The contraction of muscles relies heavily on the interaction between myosin and actin, forming a complex known as actomyosin.

肌肉的收缩在很大程度上依赖于肌球蛋白和肌动蛋白之间的相互作用，形成一个被称为肌动肌球蛋白的复合物。

7.Research has shown that actomyosin plays a crucial role in cell motility.

研究表明，肌动肌球蛋白在细胞运动中发挥着至关重要的作用。

8.In the lab, scientists studied the properties of actomyosin to understand muscle fatigue.

在实验室中，科学家研究了肌动肌球蛋白的特性，以理解肌肉疲劳。

9.During the experiment, we observed the formation of actomyosin complexes under a microscope.

在实验过程中，我们在显微镜下观察到了肌动肌球蛋白复合物的形成。

作文

Actomyosin is a fundamental protein complex that plays a crucial role in muscle contraction and various cellular movements. This complex is composed of two main proteins: actin and myosin. Actin is a globular protein that forms long filaments, while myosin is a motor protein that interacts with actin to produce force and movement. The interaction between these two proteins is essential for the contraction of muscle fibers, making actomyosin (肌动蛋白-肌球蛋白) a key player in the mechanics of muscle function.In the context of muscle physiology, the process of contraction begins when a nerve impulse stimulates a muscle fiber. This impulse leads to the release of calcium ions from the sarcoplasmic reticulum, which then binds to troponin, a regulatory protein associated with actin. This binding causes a conformational change that allows myosin heads to attach to actin filaments, forming cross-bridges. Once attached, the myosin heads pivot, pulling the actin filaments closer together, which shortens the muscle fiber and generates contraction. This cycle of attachment, pivoting, and detachment continues as long as ATP (adenosine triphosphate) is available and calcium ions are present, illustrating the dynamic nature of actomyosin (肌动蛋白-肌球蛋白) activity.Beyond muscle contraction, actomyosin (肌动蛋白-肌球蛋白) also plays a vital role in other cellular processes such as cytokinesis, cell motility, and intracellular transport. For instance, during cell division, the actomyosin contractile ring forms at the cleavage furrow, facilitating the separation of daughter cells. In amoeboid movement, cells utilize the polymerization of actin to extend protrusions called lamellipodia or filopodia, allowing them to crawl across surfaces. These diverse functions highlight the versatility of actomyosin (肌动蛋白-肌球蛋白) beyond just muscle tissue.Research into actomyosin (肌动蛋白-肌球蛋白) has significant implications for understanding various diseases. Abnormalities in actomyosin interactions can lead to muscle disorders, including cardiomyopathies and muscular dystrophies. Additionally, cancer cells often exploit the properties of actomyosin (肌动蛋白-肌球蛋白) to enhance their motility and invasiveness, making it a target for therapeutic interventions. By studying the mechanisms underlying actomyosin (肌动蛋白-肌球蛋白) function, scientists hope to develop strategies to combat these diseases.In summary, actomyosin (肌动蛋白-肌球蛋白) is an essential protein complex that facilitates muscle contraction and various cellular movements. Its intricate role in both muscle physiology and broader cellular processes underscores its importance in health and disease. As research continues to uncover the complexities of actomyosin (肌动蛋白-肌球蛋白), we may unlock new avenues for medical advancements and a deeper understanding of life at the cellular level.