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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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Chemolithotrophs are microorganisms that obtain energy by oxidizing inorganic molecules such as hydrogen gas (H₂), ammonia (NH₃), reduced sulfur compounds (H₂S, S²⁻), and ferrous iron (Fe²⁺). Unlike heterotrophic organisms that rely on organic carbon, chemolithotrophs transfer electrons from these inorganic donors to the electron transport chain (ETC), generating a proton motive force (PMF) that drives ATP synthesis through oxidative phosphorylation.
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相关实验视频

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Real-Time Metabolic Detection in Living Cells Using Hyperpolarized 13C NMR
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活体核糖体放大代谢,RAMBO,实时脉冲追踪观察到的效果,RTPC,NMR光谱学.

Jianchao Yu1, Nicholas Sciolino1, Leonard Breindel1

  • 1Department of Chemistry, University at Albany, State University of New York, Albany, New York 12222, United States.

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概括

核糖体扩大代谢 (RAMBO) 效应,以前只在体外观察到,现在已经在E. coli体内得到了验证. 这项研究证实了核糖体的存在.

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科学领域:

  • 分子生物学分子生物学
  • 生物化学 生物化学
  • 系统生物学 系统生物学

背景情况:

  • 涉及蛋白质和核糖体的二元相互作用通过核糖体放大代谢 (RAMBO) 效应影响生物活动.
  • 在体外已经观察到RAMBO效应,但其在体内验证仍然难以捉摸.

研究的目的:

  • 在体内使用大肠杆菌以验证RAMBO效应.
  • 通过RAMBO效应调查核糖体在调节糖解中的作用.

主要方法:

  • 实时脉冲追踪 (RTPC) 核磁共振光谱与大肠杆菌中的同位素流量分析相结合.
  • 使用抗生素氨基醇来破坏pyruvate kinase的五元结构和RAMBO效应.

主要成果:

  • 氨基醇对RAMBO效应的体内失活反映了体外观察结果.
  • 证实了核糖体在活细胞中调节糖解中的潜在作用.

结论:

  • 该研究在体内成功验证了RAMBO效应,证明了核糖体在糖解中的调节作用.
  • 开发的RTPC-NMR平台提供了一种非侵入性方法,用于各种细胞类型的高分辨率代谢监测.