基因甲基化调节功能的机制和与素氨酸甲基化的交叉声
Bailey M Tibben1, Scott B Rothbart1
1Department of Epigenetics, Van Andel Institute, Grand Rapids, MI 49503, USA.
Journal of molecular biology
|December 13, 2023
概括
基因甲基化和基因素酶甲基化有动态相互作用,调节基因表达和基因组稳定性. 这种交叉通话对细胞命运至关重要,并与发育障碍和癌症有关.
科学领域:
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 分子生物学分子生物学
- 基因组学就是基因组学.
背景情况:
- 基因甲基化是调节基因表达,基因组完整性和细胞命运的关键表观遗传标记.
- 基因组 lysine甲基化影响DNA甲基转移酶 (DNMT) 活性,突出表观遗传修饰之间的交叉声.
- 了解DNA甲基化和基因组修饰之间的相互作用对于破译基因组调节至关重要.
研究的目的:
- 为了审查DNA甲基化和基因素 lysine甲基化之间的动态相互作用.
- 综合最近关于这些表观遗传过程如何调节基因组功能的研究.
- 专注于DNMT3酶及其在这种交叉语音中的作用.
主要方法:
- 文献综述和近期研究的综合.
- 专注于DNA甲基化和基因素 lysine甲基化之间交叉的机制.
- 分析DNMT3酶在这种相互作用中的作用.
主要成果:
- 基因甲基化和基因素 lysine甲基化表现出动态交叉影响基因表达和基因组完整性.
- DNMT3酶是调解这种交叉语音的核心.
- 基因甲基化和基因素氨酸甲基化的不平衡与人类发育障碍和癌症有关.
结论:
- 基因组甲基化和基因素氨酸甲基化之间的相互作用是基因组功能的关键决定因素.
- 这种表观遗传交叉的失调有助于疾病的发病.
- 需要进一步的研究来充分阐明这些机制及其治疗潜力.
相关概念视频
Epigenetic Regulation
3.0K
Epigenetic changes alter the physical structure of the DNA without changing the genetic sequence and often regulate whether genes are turned on or off. This regulation ensures that each cell produces only proteins necessary for its function. For example, proteins that promote bone growth are not produced in muscle cells. Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
X-chromosome...
X-chromosome...
3.0K
Histone Modification
13.3K
The histone proteins have a flexible N-terminal tail extending out from the nucleosome. These histone tails are often subjected to post-translational modifications such as acetylation, methylation, phosphorylation, and ubiquitination. Particular combinations of these modifications form “histone codes” that influence the chromatin folding and tissue-specific gene expression.
Acetylation
The enzyme histone acetyltransferase adds acetyl group to the histones. Another enzyme, histone...
Acetylation
The enzyme histone acetyltransferase adds acetyl group to the histones. Another enzyme, histone...
13.3K
Spreading of Chromatin Modifications
8.3K
The histone proteins in the nucleosomes are post-translationally modified (PTM) to increase or decrease access to DNA. The commonly observed PTMs are methylation, acetylation, phosphorylation, and ubiquitination of lysine amino acids in the histone H3 tail region. These histone modifications have specific meaning for the cell. Hence, they are called "histone code". The protein complex involved in histone modification is termed as "reader-writer" complex.
Writers
The writer...
Writers
The writer...
8.3K
Inheritance of Chromatin Structures
6.3K
Epigenetics is the study of inherited changes in a cell's phenotype without changing the DNA sequences. It provides a form of memory for the differential gene expression pattern to maintain cell lineage, position-effect variegation, dosage compensation, and maintenance of chromatin structures such as telomeres and centromeres. For example, the structure and location of the centromere on chromosomes are epigenetically inherited. Its functionality is not dictated or ensured by the underlying...
6.3K
Covalently Linked Protein Regulators
6.8K
Proteins can undergo many types of post-translational modifications, often in response to changes in their environment. These modifications play an important role in the function and stability of these proteins. Covalently linked molecules include functional groups, such as methyl, acetyl, and phosphate groups, and also small proteins, such as ubiquitin. There are around 200 different types of covalent regulators that have been identified.
These groups modify specific amino acids in a protein....
These groups modify specific amino acids in a protein....
6.8K
The Nucleosome Core Particle
919
Nucleosomes are the DNA-histone complex, where the DNA strand is wound around the histone core. The histone core is an octamer containing two copies of H2A, H2B, H3, and H4 histone proteins.
Nucleosomes, paradoxically, perform two opposite functions simultaneously. On the one hand, their primary aim is to protect the delicate DNA strands from physical damage and help achieve a higher compaction ratio. On the other hand, they must allow polymerase enzymes to access histone-bound DNA during...
Nucleosomes, paradoxically, perform two opposite functions simultaneously. On the one hand, their primary aim is to protect the delicate DNA strands from physical damage and help achieve a higher compaction ratio. On the other hand, they must allow polymerase enzymes to access histone-bound DNA during...
919


