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相关概念视频

Lipid Catabolism01:25

Lipid Catabolism

Triglycerides serve as crucial long-term energy storage molecules in microorganisms, providing a dense source of metabolic energy. Their breakdown is mediated by lipases, which hydrolyze triglycerides into glycerol and free fatty acids. Each of these components follows distinct metabolic pathways, ultimately contributing to ATP synthesis and cellular energy homeostasis.Glycerol MetabolismGlycerol, released from triglyceride hydrolysis, is phosphorylated by glycerol kinase to form...
Biosynthesis in Bacteria01:24

Biosynthesis in Bacteria

Biosynthesis in bacteria is a fundamental anabolic process that generates essential macromolecules, including proteins, nucleic acids, lipids, and polysaccharides. These macromolecules are critical for cellular growth, replication, and function. The process is tightly regulated and energetically linked to catabolic pathways to ensure optimal resource utilization.Biosynthetic pathways begin with precursor metabolites such as pyruvate, acetyl-CoA, and glucose-6-phosphate derived from glycolysis,...
Upstream Processing01:27

Upstream Processing

Upstream processing represents a critical phase in biomanufacturing, wherein biological systems such as microorganisms, mammalian cells, or insect cells are cultivated to produce therapeutic proteins, vaccines, enzymes, or other biologically derived products. This phase encompasses all steps from the selection and genetic manipulation of the production organism to the cultivation of cells in bioreactors under tightly controlled environmental conditions.Host Selection and Genetic OptimizationThe...

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相关实验视频

Updated: Jul 12, 2026

Workflow Based on the Combination of Isotopic Tracer Experiments to Investigate Microbial Metabolism of Multiple Nutrient Sources
12:47

Workflow Based on the Combination of Isotopic Tracer Experiments to Investigate Microbial Metabolism of Multiple Nutrient Sources

Published on: January 22, 2018

通过前体指导生物合成,在里法米生物合成途径中对中间体进行立体化学分配.

Ingo V Hartung1, Mathew A Rude, Nathan A Schnarr

  • 1Department of Chemistry, Stanford University, Stanford, California 94305-5025, USA.

Journal of the American Chemical Society
|August 11, 2005
PubMed
概括
此摘要是机器生成的。

研究人员通过合成关键生物合成中间体来解码里法米辛B前体的立体化学. 本研究确定了 rifamycin 合成原生生物合成中间体的绝对和相对配置.

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Manipulating Living Cells to Construct Stable 3D Cellular Assembly Without Artificial Scaffold
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Manipulating Living Cells to Construct Stable 3D Cellular Assembly Without Artificial Scaffold

Published on: October 26, 2018

相关实验视频

Last Updated: Jul 12, 2026

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Published on: January 22, 2018

Fatty Acid 13C Isotopologue Profiling Provides Insight into Trophic Carbon Transfer and Lipid Metabolism of Invertebrate Consumers
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Fatty Acid 13C Isotopologue Profiling Provides Insight into Trophic Carbon Transfer and Lipid Metabolism of Invertebrate Consumers

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Manipulating Living Cells to Construct Stable 3D Cellular Assembly Without Artificial Scaffold
07:09

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Published on: October 26, 2018

科学领域:

  • 生物化学 生物化学
  • 有机化学 有机化学
  • 分子生物学分子生物学

背景情况:

  • 里法米辛是抑制细菌RNA聚合酶的关键抗生素.
  • 利法素B的生物合成途径涉及多基化合成酶模块.
  • 早期聚基酸中间体的立体化学被芳香化所掩盖.

研究的目的:

  • 为了确定里法米B生物合成前体的绝对和相对配置.
  • 阐明了 rifamycin 生物合成中第一个多基酸合成模块的立体化学结果.

主要方法:

  • 合成所有四个N-乙半胺 (SNAC) 铁前体的二聚体,用于利法胺合成酶模块 2.
  • 在体内循环检测试验以确定正确配置的基质.

主要成果:

  • 只有一个合成的二聚体在体内有效地转化为利法B.
  • 这证实了生物合成途径所需的特定立体化学配置.

结论:

  • 已经确定了里法米B原生生物合成中间体的绝对和相对配置.
  • 这项工作澄清了临床重要里法胺素复杂生物合成的关键步骤.