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相关概念视频

Improving Translational Accuracy02:07

Improving Translational Accuracy

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Base complementarity between the three base pairs of mRNA codon and the tRNA anticodon is not a failsafe mechanism. Inaccuracies can range from a single mismatch to no correct base pairing at all. The free energy difference between the correct and nearly correct base pairs can be as small as 3 kcal/ mol. With complementarity being the only proofreading step, the estimated error frequency would be one wrong amino acid in every 100 amino acids incorporated. However, error frequencies observed in...
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Language Development01:22

Language Development

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Children master language quickly and with relative ease, supported by both biological predisposition and reinforcement. B. F. Skinner (1957) proposed that language is learned through reinforcement, while Noam Chomsky (1965) argued that language acquisition mechanisms are biologically determined.
The critical period for language acquisition suggests that the ability to acquire language is at its peak early in life. As people age, this proficiency decreases. Language development begins very...
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Initiation of Translation02:33

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Predicting Reaction Outcomes02:24

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Kinetics describes the rate and path by which a reaction occurs. In contrast, thermodynamics deals with state functions and describes the properties, behavior, and components of a system. It is not concerned with the path taken by the process and cannot address the rate at which a reaction occurs. Although it does provide information about what can happen during a reaction process, it does not describe the detailed steps of what appears on an atomic or a molecular level. On the other hand,...
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Termination of Translation01:44

Termination of Translation

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The large ribosomal subunit has several important structures essential to translation. These include the peptidyl transferase center (PTC) - which is the site where the peptide bond is formed - and a large, internal, water-filled tube through which the nascent polypeptide moves. This latter structure is called the Peptide Exit Tunnel, and it begins at the PTC and spans the body of the large ribosomal subunit. During translation, as the nascent polypeptide chain is synthesized, it passes through...
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Ribosome Profiling02:24

Ribosome Profiling

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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
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Updated: Jul 1, 2025

De novo Identification of Actively Translated Open Reading Frames with Ribosome Profiling Data
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Riboformer:一种深度学习框架,用于预测上下文依赖的翻译动态.

Bin Shao1,2, Jiawei Yan3, Jing Zhang4

  • 1Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA, USA. shaobinlx@gmail.com.

Nature communications
|March 5, 2024
PubMed
概括
此摘要是机器生成的。

深度学习工具Riboformer标准化了核糖体分析数据,以揭示基因序列如何影响蛋白质生产. 它有助于识别与疾病相关的翻译问题和导致核糖体停滞的序列动机.

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科学领域:

  • 分子生物学分子生物学
  • 计算生物学 计算生物学
  • 基因组学就是基因组学.

背景情况:

  • 细胞蛋白质稳定依赖于准确的翻译延长,与各种疾病相关的干扰.
  • 核糖体造型提供全基因组翻译测量,但难以区分生物信号和技术噪音.
  • 识别翻译失调的特定序列决定因素对于理解疾病机制至关重要.

研究的目的:

  • 介绍Riboformer,这是一个深度学习框架,用于建模上下文依赖的翻译动态.
  • 使用变压器架构准确预测可子分辨率上的核糖体密度.
  • 提供一种用于标准化核糖体分析数据和识别基于序列的翻译监管元素的方法.

主要方法:

  • 开发了Riboformer,这是一个使用变压器架构的深度学习框架.
  • 在无偏见的核糖体分析数据集上训练了Riboformer.
  • 应用Riboformer来纠正新数据集中的文物,并将其与in silico mutagenesis结合起来.

主要成果:

  • Riboformer准确地预测了核糖体密度,并纠正了核糖体分析数据中的实验文物.
  • 该框架揭示了同名编码体翻译中的微妙差异,并确定了翻译延长瓶.
  • 在衰老和病毒感染背景下,Riboformer成功识别了与核糖体停滞相关的序列动机.

结论:

  • Riboformer提供了一种具有上下文意识和可解释的方法来分析核糖体分析数据.
  • 该工具有助于标准化翻译动力学测量,并阐明翻译动力学的监管基础.
  • Riboformer 方便识别导致疾病和生物过程中翻译失调的序列决定因素.