euchromatin

简明释义

英[ˌjuː.kroʊˈmæt.ɪn]美[ˌjuː.kroʊˈmæt.ɪn]

n. [细胞] 常染色质（染色体的一部分）

英英释义

单词用法

同义词

反义词

例句

1.Type B2, B3 thymoma have obvious atypia with rich in euchromatin and distinct nucleolus in nuclei and broad cytoplasm with projections.

B3型胸腺瘤异型性较明显，常染色质较丰富，核仁明显，细胞质宽大，有突起。

2.Type B2, B3 thymoma have obvious atypia with rich in euchromatin and distinct nucleolus in nuclei and broad cytoplasm with projections.

B3型胸腺瘤异型性较明显，常染色质较丰富，核仁明显，细胞质宽大，有突起。

3.Liver; hepatocyte nucleus with abundant euchromatin; prominent mitochondria, rough endoplasmic reticulum, and glycogen.

肝脏，肝细胞核含大量常染色质；大量线粒体；粗面内质网；糖原。

4.Zones of loosely arranged euchromatin are located mainly in the center of the nucleus.

疏松的染色质区带主要位于细胞核的中心部。

5.Their nuclei are pale and vesicular, containing mainly unstained euchromatin.

细胞核染色苍白呈空泡状，应为主要含有的是不着色的常染色质。

6.That which shows the "normal" condensation pattern is called euchromatin.

那些表现“正常的”浓缩格式的部分叫做常染色质。

7.In the nucleus, regions of euchromatin 真染色质 are more accessible for transcription.

在细胞核中，真染色质 euchromatin 的区域更易于转录。

8.The presence of euchromatin 真染色质 indicates active gene expression.

存在 真染色质 euchromatin 表明基因表达活跃。

9.Researchers found that mutations in euchromatin 真染色质 can lead to various genetic disorders.

研究人员发现 真染色质 euchromatin 中的突变可能导致各种遗传疾病。

10.During cell division, euchromatin 真染色质 becomes tightly packed into chromosomes.

在细胞分裂过程中，真染色质 euchromatin 被紧密打包成染色体。

11.The study focused on how euchromatin 真染色质 interacts with regulatory proteins.

该研究集中于 真染色质 euchromatin 如何与调节蛋白相互作用。

作文

Euchromatin is a crucial component of the cellular architecture, playing a significant role in gene expression and regulation. Unlike heterochromatin, which is densely packed and transcriptionally inactive, euchromatin 真染色质 is less condensed and more accessible to the transcription machinery of the cell. This structural difference allows for the active transcription of genes, making euchromatin 真染色质 essential for various cellular functions, including development, differentiation, and response to environmental stimuli. The organization of euchromatin 真染色质 within the nucleus is dynamic. It can change in response to various signals, allowing cells to adapt quickly to their changing environments. For instance, during the early stages of development, certain genes must be activated while others are silenced. The accessibility of euchromatin 真染色质 facilitates this process, enabling the necessary genes to be expressed at the right time and place. Furthermore, the modification of histones, which are proteins around which DNA is wrapped, plays a pivotal role in determining whether a region of chromatin is categorized as euchromatin 真染色质 or heterochromatin. Specific chemical modifications, such as acetylation, promote a more relaxed structure, encouraging the formation of euchromatin 真染色质. Conversely, other modifications can lead to tighter packing, resulting in heterochromatin. Research has shown that the state of euchromatin 真染色质 can influence not only individual gene expression but also broader genomic stability. Abnormalities in the regulation of euchromatin 真染色质 can contribute to various diseases, including cancer. In many cancers, specific genes that should be expressed are silenced due to changes in chromatin structure, leading to uncontrolled cell growth and proliferation. In addition to its role in gene expression, euchromatin 真染色质 is also involved in DNA repair processes. When DNA is damaged, the chromatin structure can change to allow access to repair machinery. This adaptability is crucial for maintaining genomic integrity and preventing mutations that could lead to disease. In conclusion, euchromatin 真染色质 is an essential aspect of molecular biology, influencing gene expression, cellular response, and genomic stability. Understanding the mechanisms that regulate euchromatin 真染色质 can provide insights into developmental biology and the pathogenesis of diseases. As research advances, it will undoubtedly uncover further complexities of euchromatin 真染色质 and its critical functions within the cell.

真染色质是细胞结构的一个关键组成部分，在基因表达和调控中发挥着重要作用。与密集打包且转录不活跃的异染色质不同，euchromatin 真染色质 是较少凝聚且更易于接触细胞转录机制的。这种结构差异使得基因的主动转录成为可能，使得euchromatin 真染色质 对于各种细胞功能至关重要，包括发育、分化和对环境刺激的反应。 euchromatin 真染色质 在细胞核内的组织是动态的。它可以根据各种信号发生变化，使细胞能够快速适应不断变化的环境。例如，在发育的早期阶段，某些基因必须被激活，而其他基因则被沉默。euchromatin 真染色质 的可及性促进了这一过程，使必要的基因能够在正确的时间和地点被表达。 此外，组蛋白的修饰，即包裹DNA的蛋白质， 在决定染色质区域是被归类为euchromatin 真染色质 还是异染色质时起着关键作用。特定的化学修饰，如乙酰化，促进了更放松的结构，鼓励形成euchromatin 真染色质。相反，其他修饰会导致更紧密的打包，从而导致异染色质。 研究表明，euchromatin 真染色质 的状态不仅能影响单个基因的表达，还能影响更广泛的基因组稳定性。euchromatin 真染色质 的调控异常可能导致多种疾病，包括癌症。在许多癌症中，某些本应被表达的基因由于染色质结构的变化而被沉默，导致细胞生长和增殖失控。 除了在基因表达中的作用外，euchromatin 真染色质 还参与DNA修复过程。当DNA受损时，染色质结构可以发生变化，以允许修复机制的接入。这种适应能力对于维持基因组的完整性和防止可能导致疾病的突变至关重要。 总之，euchromatin 真染色质 是分子生物学的一个重要方面，影响基因表达、细胞反应和基因组稳定性。理解调控euchromatin 真染色质 的机制可以为发育生物学和疾病发生机制提供深入见解。随着研究的进展，它无疑会揭示euchromatin 真染色质 及其在细胞内关键功能的进一步复杂性。