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Related Concept Videos

Bioremediation00:46

Bioremediation

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Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.
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Environmental Applications of Microorganisms01:30

Environmental Applications of Microorganisms

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Microorganisms play a pivotal role in maintaining ecosystem balance by recycling essential elements such as carbon, nitrogen, and phosphorus, as well as supporting processes like bioremediation, wastewater treatment, and biofuel production.Microbes in Elemental CyclesIn the carbon cycle, microorganisms decompose organic matter, releasing carbon dioxide via aerobic respiration. This carbon dioxide is subsequently used by photosynthetic organisms to synthesize organic compounds, closing the...
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Lipid Catabolism01:25

Lipid Catabolism

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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...
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Transformation01:26

Transformation

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Microbial communities are dynamic environments where cell lysis releases free DNA into the surroundings. Other cells can take up this extracellular DNA through a process known as transformation.When a cell incorporates this foreign DNA into its genome, resulting in genetic modification, the process is known as transformation. Cells capable of this process are termed competent. Competence can be natural, as observed in certain bacteria and archaea, or artificially induced in the...
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Amino Acid Catabolism01:18

Amino Acid Catabolism

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Microorganisms rely on proteins as an essential carbon and energy source, particularly in environments with limited polysaccharides or lipids. However, proteins are too large to cross the plasma membrane unaided, necessitating enzymatic degradation. Microbes secrete extracellular proteases and peptidases that hydrolyze proteins into peptides, which can then be transported across the membrane. Once inside the cell, intracellular proteases degrade these peptides into free amino acids, which...
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Biosynthesis in Bacteria01:24

Biosynthesis in Bacteria

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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,...
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Isolation of Native Soil Microorganisms with Potential for Breaking Down Biodegradable Plastic Mulch Films Used in Agriculture
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Biotechnological Plastic Degradation and Valorization Using Systems Metabolic Engineering.

Ga Hyun Lee1,2, Do-Wook Kim1, Yun Hui Jin1,2

  • 1Clean Energy Research Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea.

International Journal of Molecular Sciences
|October 28, 2023
PubMed
Summary
This summary is machine-generated.

Plastic waste is a major environmental issue. This review explores microbial degradation and bio-upcycling of plastics, focusing on enzymes and systems metabolic engineering for a circular plastic bioeconomy.

Keywords:
bio-upcyclingbiodegradationcircular plastic bioeconomyplastic wastesystems metabolic engineering

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Area of Science:

  • Environmental Science
  • Biotechnology
  • Materials Science

Background:

  • Plastic accumulation poses a significant environmental threat.
  • Current recycling methods face challenges with composite plastics.
  • Biodegradation offers a promising alternative for plastic waste management.

Purpose of the Study:

  • To review microbial strains and enzymes for plastic biodegradation.
  • To explore advances in plastic waste valorization using systems metabolic engineering.
  • To discuss future strategies for a circular plastic bioeconomy.

Main Methods:

  • Literature review of microbial degradation of plastics.
  • Analysis of enzymes involved in plastic breakdown.
  • Exploration of systems metabolic engineering approaches for plastic valorization.

Main Results:

  • Identification of various microbial strains capable of degrading plastics.
  • Highlighting key enzymes and their mechanisms in biodegradation.
  • Overview of recent advancements in biotechnological plastic waste valorization.

Conclusions:

  • Biotechnological approaches, particularly microbial degradation and systems metabolic engineering, are crucial for addressing plastic waste.
  • Enzyme-based degradation and bio-upcycling offer sustainable solutions.
  • Further development of systems metabolic engineering strategies is key to a circular plastic bioeconomy.