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Related Concept Videos

Overview of Lipid Metabolism01:24

Overview of Lipid Metabolism

Lipid metabolism is a crucial process in the human body that involves the synthesis and degradation of lipids. This process is essential for energy production, cell membrane formation, and hormone production, among other functions.
Lipolysis: The Breakdown of Lipids:
Lipolysis is the process of breaking down lipids, particularly triglycerides, into glycerol and fatty acids. This process typically occurs in the adipose tissue and is triggered by various hormones, including glucagon and...
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...
Overview of Fatty Acid Metabolism01:28

Overview of Fatty Acid Metabolism

Lipids also are sources of energy that power cellular processes. Like carbohydrates, lipids are composed of carbon, hydrogen, and oxygen, but these atoms are arranged differently. Most lipids are nonpolar and hydrophobic. Major types include fats and oils, waxes, phospholipids, and steroids.
Fatty acids are catabolized in a process called beta-oxidation, which takes place in the matrix of the mitochondria and converts their fatty acid chains into two-carbon units of acetyl groups. The acetyl...
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 Digestion01:06

Lipid Digestion

Lipids are large molecules that are generally not water-soluble. Since most of the digestive enzymes in the human body are water-based, there are specific steps the body must take to break down lipids and make them available for use.
Lipid Absorption01:24

Lipid Absorption

Dietary triglycerides from chyme in the duodenum are mixed with bile salts produced by the liver to emulsify fats. As a result, large droplets are broken down into smaller ones, increasing the surface area for enzymatic action. Once emulsified, pancreatic lipases hydrolyze the triglycerides into free fatty acids and monoglycerides.
These breakdown products bind with bile salts and lecithin to form micelles, which quickly pass between microvilli to come in close contact with the apical...

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Related Experiment Video

Updated: May 25, 2026

Measuring the Rate of Lipolysis in Ex Vivo Murine Adipose Tissue and Primary Preadipocytes Differentiated In Vitro
09:41

Measuring the Rate of Lipolysis in Ex Vivo Murine Adipose Tissue and Primary Preadipocytes Differentiated In Vitro

Published on: March 17, 2023

Acyl-lipid metabolism.

Yonghua Li-Beisson, Basil Shorrosh, Fred Beisson

    The Arabidopsis Book
    |February 4, 2012
    PubMed
    Summary
    This summary is machine-generated.

    This study details the diverse functions and metabolic pathways of acyl lipids in Arabidopsis. It covers membrane structure, energy storage, and protective layers, with comprehensive data available online.

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    Quantitative Determination of De Novo Fatty Acid Synthesis in Brown Adipose Tissue Using Deuterium Oxide
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    Quantitative Determination of De Novo Fatty Acid Synthesis in Brown Adipose Tissue Using Deuterium Oxide

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    Last Updated: May 25, 2026

    Measuring the Rate of Lipolysis in Ex Vivo Murine Adipose Tissue and Primary Preadipocytes Differentiated In Vitro
    09:41

    Measuring the Rate of Lipolysis in Ex Vivo Murine Adipose Tissue and Primary Preadipocytes Differentiated In Vitro

    Published on: March 17, 2023

    Cellular Lipid Extraction for Targeted Stable Isotope Dilution Liquid Chromatography-Mass Spectrometry Analysis
    09:26

    Cellular Lipid Extraction for Targeted Stable Isotope Dilution Liquid Chromatography-Mass Spectrometry Analysis

    Published on: November 17, 2011

    Quantitative Determination of De Novo Fatty Acid Synthesis in Brown Adipose Tissue Using Deuterium Oxide
    07:34

    Quantitative Determination of De Novo Fatty Acid Synthesis in Brown Adipose Tissue Using Deuterium Oxide

    Published on: May 12, 2023

    Area of Science:

    • Plant biochemistry
    • Lipid metabolism
    • Molecular biology

    Background:

    • Acyl lipids are crucial for plant cell membranes, energy storage (triacylglycerol), and protective layers (cutin, suberin, waxes).
    • Arabidopsis thaliana exhibits hundreds of acyl lipid molecular species due to variations in acyl chain composition across multiple lipid classes.

    Purpose of the Study:

    • To detail the metabolic pathways involved in the biosynthesis and degradation of acyl lipids in plants.
    • To provide a comprehensive resource on Arabidopsis acyl lipid pathways, enzymes, genes, and composition.

    Main Methods:

    • Review and synthesis of existing knowledge on acyl lipid metabolism.
    • Presentation of data through figures, tables, and an associated online database (ARALIP).

    Main Results:

    • Acyl lipids perform vital roles in membrane integrity, seed energy reserves (35% of seed weight in Arabidopsis), and aerial/root surface protection.
    • Detailed metabolic pathways, enzymes, and genes associated with acyl lipid synthesis and breakdown are elucidated.

    Conclusions:

    • Understanding acyl lipid metabolism is key to plant physiology, development, and stress response.
    • The ARALIP database serves as a valuable, detailed resource for Arabidopsis lipid research.