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相关概念视频

RNA Splicing01:32

RNA Splicing

60.2K
Splicing is the process by which eukaryotic RNA is edited before its translation into protein. The RNA strand transcribed from eukaryotic DNA is called the primary transcript. The primary transcripts that become mRNAs are called precursor messenger RNAs (pre-mRNAs). Eukaryotic pre-mRNA contains alternating sequences of exons and introns. Exons are nucleotide sequences that code for proteins, whereas introns are the non-coding regions. In RNA splicing, introns are removed and exons are bonded...
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Alternative RNA Splicing02:18

Alternative RNA Splicing

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Alternative RNA splicing is the regulated splicing of exons and introns to produce different mature mRNAs from a single pre-mRNA. Unlike in constitutive splicing where a single gene produces a single type of mRNA, alternative splicing allows an organism to produce multiple proteins from a single gene and plays an important role in protein diversity.
There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
24.6K
Alternative RNA Splicing02:18

Alternative RNA Splicing

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What is Gene Expression?01:36

What is Gene Expression?

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A gene is a stretch of DNA that serves as the blueprint for functional RNAs and proteins. Since DNA is comprised  of nucleotides and proteins are comprised of amino acids, a mediator is required to convert the information encoded in DNA into proteins. This mediator is the messenger RNA (mRNA). mRNA copies the blueprint from DNA by a process called transcription. In eukaryotes, transcription occurs in the nucleus by complementary base-pairing with the DNA template. The mRNA is then...
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What is Gene Expression?01:42

What is Gene Expression?

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Overview
Gene expression is the process in which DNA directs the synthesis of functional products, that is, proteins. Cells can regulate gene expression at various stages. It allows organisms to generate different cell types and enables cells to adapt to internal and external factors.
Genetic Information Flows from DNA to RNA to Protein
A gene is a stretch of DNA that serves as the blueprint for functional RNAs and proteins. Since DNA is made up of nucleotides and proteins consist of amino...
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Ribosome Profiling02:24

Ribosome Profiling

4.0K
Ribosome profiling or ribo-sequencing is a deep sequencing technique that produces a snapshot of active translation in a cell. It selectively sequences the mRNAs protected by ribosomes to get an insight into a cell’s translation landscape at any given point in time.
Applications of ribosome profiling
Ribosome profiling has many applications, including in vivo monitoring of translation inside a particular organ or tissue type and quantifying new protein synthesis levels.
The technique...
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相关实验视频

Updated: Jan 8, 2026

Detection of Alternative Splicing During Epithelial-Mesenchymal Transition
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Detection of Alternative Splicing During Epithelial-Mesenchymal Transition

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超越基因:解码替代性异构体的解码

Kaia Mattioli1, Martha L Bulyk2

  • 1Division of Genetics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA.

Trends in genetics : TIG
|December 11, 2025
PubMed
概括
此摘要是机器生成的。

大多数人类基因产生多个mRNA转录,导致各种蛋白质异型. 最近的进展表明,这些替代蛋白质异型是常见的,独特的,并且与疾病有关,因此需要对分子生物学采取异型意识的方法.

关键词:
其他替代性异构形式.蛋白质形式的蛋白质形式拼接 拼接 拼接 拼接

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相关实验视频

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Quantitative Analysis of Alternative Pre-mRNA Splicing in Mouse Brain Sections Using RNA In Situ Hybridization Assay
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Identification of Alternative Splicing and Polyadenylation in RNA-seq Data
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科学领域:

  • 分子生物学分子生物学
  • 基因组学就是基因组学.
  • 蛋白质组学是指蛋白质组学.

背景情况:

  • 大多数人类基因通过替代拼接等机制来表达多个信使RNA (mRNA) 转录.
  • 这些转录可以转化为各种蛋白质异型,但它们对人类蛋白质组的集体影响一直受到争论.
  • 已知替代蛋白质异型的功能意义,但它们的广泛作用尚不清楚.

研究的目的:

  • 调查替代mRNA转录在蛋白质水平上多样化人类蛋白质组的程度.
  • 评估这些替代蛋白质异型体的生化特异性和疾病相关性.
  • 倡导在分子研究中转向对同位体有意识的表征.

主要方法:

  • 利用长读RNA测序进行全面的转录分析.
  • 采用敏感的蛋白质组学技术来检测和量化蛋白质异型.
  • 应用高通量方法来扰乱和研究单个异形函数.

主要成果:

  • 证据表明,大多数替代mRNA转录在蛋白质水平上被翻译成不同的蛋白质异型.
  • 这些蛋白质异构体表现出生物化学差异.
  • 观察到替代蛋白质异型与各种疾病之间存在显著的关联.

结论:

  • 替代性蛋白质异构体在使人类蛋白质组多样化方面发挥着重要作用.
  • 技术进步证实了蛋白质异构体的流行和功能相关性.
  • 未来的分子表征应该采用"同位素意识"的观点,超越单基因分析.