actin

简明释义

英[ˈæktɪn]美[ˈæktɪn]

n. [生化] 肌动蛋白

英英释义

单词用法

同义词

反义词

例句

1.Corn pollen actin has cross reaction with the antiserum of rabbit against chicken gizzard actin.

玉米花粉肌动蛋白可与兔抗鸡胃肌动蛋白抗血清产生免疫沉淀反应。

2.Both microtubule and actin cytoskeleton have been shown to be involved in proper nuclear positioning.

细胞骨架微管和肌动蛋白都参与了细胞核定位的过程。

3.This is an image of an endothelial cell attached to synthetic microfibers, stained with microtubules, F-actin and nuclei.

这是一张附加在人造纤维上内皮细胞的照片，它用微管的、F -肌动蛋白和核心来染色。

4.Each of the troponin complexes appears to determine the ability of seven actin monomers to participate in the contractile process.

每个肌钙蛋白复合物决定著七个肌动蛋白单体参加收缩过程的能力。

5.And don't look so upset, why you actin bashful?

别这样不高兴，为什么局促不安呢？

6.From this time dated their plan of play actin'.

从这个时候起，他们的演戏计划就开始了。

7.Many proteins bind to actin to regulate its polymerization and function.

许多蛋白质与肌动蛋白结合以调节其聚合和功能。

8.During cytokinesis, actin forms a contractile ring that helps divide the cell.

在细胞分裂过程中，肌动蛋白形成一个收缩环，帮助分裂细胞。

9.Research has shown that actin filaments are essential for cellular movement.

研究表明，肌动蛋白丝对于细胞运动是必不可少的。

10.The muscle contraction is primarily facilitated by the interaction between myosin and actin.

肌肉收缩主要是通过肌球蛋白和肌动蛋白之间的相互作用来实现的。

11.In cell biology, actin plays a crucial role in maintaining the cell's shape.

在细胞生物学中，肌动蛋白在维持细胞形状方面起着至关重要的作用。

作文

In the realm of cellular biology, understanding the components that make up the cytoskeleton is crucial for comprehending how cells maintain their shape and function. One of the primary proteins involved in this structure is actin, which plays a vital role in various cellular processes. Actin is a globular protein that polymerizes to form long filaments, known as microfilaments, which are essential for cell motility, division, and structural integrity. The dynamic nature of actin allows cells to adapt to their environment, facilitating processes such as muscle contraction, amoeboid movement, and the formation of cellular extensions like microvilli and lamellipodia.The significance of actin extends beyond mere structural support; it is also involved in intracellular transport and the maintenance of cell shape. For instance, during cell division, actin forms a contractile ring that helps to pinch the cell into two daughter cells. This process, known as cytokinesis, is critical for proper cell replication and organismal development. Furthermore, actin interacts with various other proteins, such as myosin, to facilitate movement. Myosin, often referred to as the motor protein, moves along actin filaments to generate force, enabling muscle contractions and other movements at the cellular level.Research has shown that the regulation of actin dynamics is tightly controlled by a variety of actin-binding proteins. These proteins can promote or inhibit the polymerization of actin, thereby influencing the overall behavior of the cell. For example, profilin enhances the rate of actin polymerization, while cofilin severs existing filaments, allowing for rapid remodeling of the cytoskeleton. This regulation is crucial in processes such as wound healing, where rapid cell movement is required. Additionally, dysregulation of actin dynamics has been implicated in various diseases, including cancer metastasis, where cancer cells exploit the properties of actin to invade surrounding tissues and spread to other parts of the body.Moreover, the study of actin has broader implications in the field of biotechnology and medicine. Scientists are exploring ways to manipulate actin dynamics for therapeutic purposes, such as developing drugs that target specific actin-binding proteins to inhibit cancer cell migration. By understanding how actin functions within cells, researchers can design innovative strategies to combat diseases that involve aberrant cell movement and growth.In summary, actin is not just a structural component of the cytoskeleton; it is a multifunctional protein that plays an integral role in numerous cellular processes. From maintaining cell shape to facilitating movement and division, actin is essential for life at the cellular level. As research continues to unveil the complexities of actin dynamics, we gain deeper insights into cellular behavior and the potential for therapeutic interventions in various diseases. Understanding actin is thus fundamental for anyone interested in the biological sciences, as it serves as a key player in the intricate dance of life at the cellular scale.

在细胞生物学的领域中，理解构成细胞骨架的成分对于理解细胞如何维持其形状和功能至关重要。其中一个主要的蛋白质是actin，它在各种细胞过程中发挥着重要作用。actin是一种球状蛋白，可以聚合形成长丝，称为微丝，这对于细胞运动、分裂和结构完整性是必不可少的。actin的动态特性使细胞能够适应其环境，促进肌肉收缩、变形虫运动以及微绒毛和伪足等细胞扩展的形成。actin的重要性不仅仅在于提供结构支持；它还参与细胞内运输和细胞形状的维持。例如，在细胞分裂期间，actin形成一个收缩环，帮助将细胞分为两个子细胞。这个过程被称为细胞质分裂，对于细胞复制和有机体发育至关重要。此外，actin与其他多种蛋白质相互作用，例如肌动蛋白，以促进运动。肌动蛋白通常被称为马达蛋白，它沿着actin丝移动以产生力量，使肌肉收缩和其他细胞水平的运动得以实现。研究表明，actin动态的调节受到多种结合蛋白的严格控制。这些蛋白可以促进或抑制actin的聚合，从而影响细胞的整体行为。例如，profilin增强actin聚合的速率，而cofilin则切割现有的丝，允许细胞骨架的快速重塑。这种调节在伤口愈合等过程中至关重要，因为此时需要快速的细胞运动。此外，actin动态的失调与多种疾病有关，包括癌症转移，其中癌细胞利用actin的特性侵入周围组织并扩散到身体其他部位。此外，actin的研究在生物技术和医学领域具有更广泛的意义。科学家们正在探索操控actin动态以实现治疗目的的方法，例如开发针对特定actin结合蛋白的药物，以抑制癌细胞迁移。通过理解actin在细胞内的功能，研究人员可以设计出创新的策略来对抗涉及异常细胞运动和生长的疾病。总之，actin不仅仅是细胞骨架的结构成分；它是一种多功能蛋白，在众多细胞过程中发挥着不可或缺的作用。从维持细胞形状到促进运动和分裂，actin对细胞水平的生命至关重要。随着研究不断揭示actin动态的复杂性，我们对细胞行为及其在各种疾病中的潜在治疗干预的深入了解也在不断加深。因此，理解actin对于任何对生物科学感兴趣的人来说都是基础，因为它在细胞尺度的复杂生命舞蹈中扮演着关键角色。