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相关概念视频

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
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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From DNA to Protein03:06

From DNA to Protein

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The flow of genetic information in cells from DNA to mRNA to protein is described by the central dogma, which states that genes specify the sequence of mRNAs, which in turn specify the sequence of amino acids making up all proteins. The decoding of one molecule to another is performed by specific proteins and RNAs. Because the information stored in DNA is so central to cellular function, it makes intuitive sense that the cell would make mRNA copies of this information for protein synthesis...
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Leaky Scanning02:28

Leaky Scanning

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During most eukaryotic translation processes, the small 40S ribosome subunit scans an mRNA from its 5' end until it encounters the first start AUG codon. The large 60S ribosomal subunit then joins the smaller one to initiate protein synthesis. The location of the translation initiation is largely determined by the nucleotides near the start codon as there may be multiple translation initiation sites present on the mRNA.  Marilyn Kozak discovered that the sequence RCCAUGG (where R...
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The central dogma explains the flow of genetic information from DNA nucleotides to the amino acid sequence of proteins.
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In the early 1900s, scientists discovered that DNA stores all the information needed for cellular functions and that proteins perform most of these functions. However, the mechanisms of converting genetic information into functional proteins remained unknown for many years. Initially, it was believed that a single gene is...
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Prokaryotic genomes exhibit a streamlined organization of coding and non-coding regions essential for gene expression and protein synthesis. While coding regions contain the genetic instructions for proteins or functional RNAs, non-coding regions regulate the precise transcription and translation of these genes.Coding Regions: Proteins and RNAsThe primary coding regions, known as structural genes, include sequences transcribed into messenger RNA (mRNA) and ultimately translated into...
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相关实验视频

Updated: Jul 12, 2025

De novo Identification of Actively Translated Open Reading Frames with Ribosome Profiling Data
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在人类转录基因组中非正规的开放阅读框架的蛋白质编码潜力.

Hitesh Kore1, Keshava K Datta2, Shivashankar H Nagaraj3

  • 1Centre for Genomics and Personalised Health, Queensland University of Technology, Brisbane, Queensland, 4059, Australia; Cancer Precision Medicine Group, QIMR Berghofer Medical Research Institute, 300 Herston Road, Herston, Queensland, 4006, Australia; Faculty of Health, Queensland University of Technology, Brisbane, Queensland, 4059, Australia.

Biochemical and biophysical research communications
|October 28, 2023
PubMed
概括

最近的研究揭示了许多来自人类非编码DNA的小型开放式读取框架编码蛋白 (SEP). 虽然许多保存不良,但一些SEP对生物功能和疾病至关重要.

关键词:
没有编码的RNAs.新型蛋白质是一种新型蛋白质.蛋白质编码的潜在潜力单一服务提供商 (SEP) 提供服务.

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An Integrated Approach for Microprotein Identification and Sequence Analysis
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科学领域:

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

背景情况:

  • 蛋白质基因组学和核糖体分析揭示了来自人类非编码基因组区域的新型蛋白质.
  • 这些小型开放式读取框架编码蛋白 (SEP) 来自mRNA和长非编码RNA (lncRNA) 的未翻译区域 (UTR).
  • SEP通常很短 (<150个氨基酸),并且具有有限的进化保存.

研究的目的:

  • 审查目前对SEP的理解,包括其识别方法和挑战.
  • 讨论特征性SEP的功能作用和疾病关联.
  • 与正规蛋白相比,探索SEP的独特特征和注释困难.

主要方法:

  • 对蛋白质基因组和核糖体概况研究的审查.
  • 对功能性特征的SEP的文献分析.
  • 对SEP特征与正规蛋白质进行比较分析.

主要成果:

  • 在人类基因组中发现了大量SEP.
  • 一个SEP的子集在基本的生物过程和人类疾病中具有功能性重要性.
  • 与正规蛋白相比,SEP的独特特征正在出现.

结论:

  • 人类基因组中新型蛋白质编码区域的全部范围和功能重要性仍然不完全理解.
  • 持续的研究对于准确的注释和了解SEP的角色至关重要.
  • SEP代表了人类蛋白质组的一个重要,但尚未被充分探索的组成部分.