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Related Concept Videos

Biosynthesis of Lipids01:29

Biosynthesis of Lipids

Microbial membranes exhibit remarkable diversity in lipid composition, reflecting evolutionary adaptations to various environmental conditions. The three domains of life—Bacteria, Archaea, and Eukarya—synthesize membrane lipids through distinct biosynthetic pathways, leading to fundamental structural differences that impact membrane stability, function, and adaptability.Fatty Acid-Based Lipids in Bacteria and EukaryaBacteria and eukaryotes share a common fatty acid biosynthesis pathway, which...
Lipid Catabolism01:25

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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...
Factors Influencing Microbial Growth: Temperature01:27

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Microorganisms display remarkable adaptations, enabling them to thrive in diverse ecological niches across a wide range of temperatures. Temperature profoundly influences microbial growth by affecting enzymatic activity, membrane fluidity, and other cellular processes.Each microorganism operates within a specific temperature range defined by three cardinal points: minimum, optimum, and maximum. Below the minimum temperature, membranes lose fluidity, halting transport processes. Above the...
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Microbes in Food Production01:29

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Microbial fermentation is central to food biotechnology, enhancing flavor, texture, preservation, and stability. Fermentative microorganisms metabolize carbohydrates into organic acids, alcohols, and other metabolites that inhibit spoilage organisms and improve digestibility while contributing distinctive sensory qualities.In baking, amylases naturally present in flour hydrolyze starch into monosaccharides such as glucose, which Saccharomyces cerevisiae ferments anaerobically. Through...
Formation of Lipopolysaccharides01:19

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Lipopolysaccharides (LPS) are crucial components of the outer membrane of Gram-negative bacteria, serving both structural and functional roles. It contributes to membrane stability and protects bacteria from host immune responses. LPS is composed of three major regions—lipid A, a core oligosaccharide, and an O antigen. The biosynthesis and assembly of LPS involve a highly coordinated set of enzymatic reactions and transport mechanisms. Additionally, LPS is recognized as an endotoxin, triggering...

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Microfluidic Production of Lysolipid-Containing Temperature-Sensitive Liposomes
09:51

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Published on: March 3, 2020

Cold active microbial lipases: some hot issues and recent developments.

Babu Joseph1, Pramod W Ramteke, George Thomas

  • 1Department of Microbiology and Microbial Technology, College of Biotechnology and Allied Sciences, Allahabad Agricultural Institute-Deemed University, Uttar Pradesh, India.

Biotechnology Advances
|June 24, 2008
PubMed
Summary
This summary is machine-generated.

Psychrophilic lipases, enzymes from cold-adapted microbes, are valuable for organic synthesis and industrial applications due to their low-temperature activity and flexibility. Their unique properties make them ideal for various biotechnological processes.

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Enrichment of Bacterial Lipoproteins and Preparation of N-terminal Lipopeptides for Structural Determination by Mass Spectrometry
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Enrichment of Bacterial Lipoproteins and Preparation of N-terminal Lipopeptides for Structural Determination by Mass Spectrometry

Published on: May 21, 2018

Area of Science:

  • Biochemistry
  • Enzymology
  • Biotechnology

Background:

  • Lipases are glycerol ester hydrolases with diverse catalytic activities beyond triglyceride hydrolysis.
  • Temperature stability is a key industrial characteristic for lipases.
  • Psychrophilic lipases offer unique advantages at low temperatures and low water conditions due to their inherent flexibility.

Purpose of the Study:

  • To highlight the significance of psychrophilic lipases in various scientific and industrial fields.
  • To emphasize the advantages of cold-active lipases over mesophilic and thermophilic counterparts.
  • To discuss the broad biotechnological applications of cold-active lipases.

Main Methods:

  • Isolation and study of cold-active lipases from cold-adapted microorganisms.
  • Characterization of lipase properties such as specificity, stability, and optimal pH.
  • Exploration of biotechnological applications and heterologous gene expression in psychrophilic hosts.

Main Results:

  • Psychrophilic lipases exhibit high activity at low temperatures and greater flexibility in low-water environments.
  • Cold-active bacterial lipases, though less studied than others, show significant potential.
  • Processes using cold-active lipases, such as from C. antarctica, have been patented.

Conclusions:

  • Cold-active lipases are crucial for organic synthesis of chiral intermediates and offer advantages for producing delicate compounds.
  • Their inherent flexibility makes them superior to rigid mesophilic and thermophilic enzymes in low-water conditions.
  • Cold-active lipases are versatile biocatalysts with broad applications in pharmaceuticals, food, detergents, and bioremediation, making them the enzymes of choice for numerous scientific disciplines.