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Related Concept Videos

Peroxisomes01:24

Peroxisomes

Peroxisomes are specialized organelles present in fungi, plant, and animal cells. It can vary in number, size, morphology, and activity depending on the type of tissue and the nutritional state of the cell. For example, cells with active lipid metabolism, such as adipocytes, neurons, and hepatocytes, have more peroxisomes than other cells in the body. Besides their primary role in breaking down complex organic molecules, peroxisomes can also synthesize specific macromolecules and participate in...
Peroxisomes01:24

Peroxisomes

Peroxisomes are specialized organelles present in fungi, plant, and animal cells. It can vary in number, size, morphology, and activity depending on the type of tissue and the nutritional state of the cell. For example, cells with active lipid metabolism, such as adipocytes, neurons, and hepatocytes, have more peroxisomes than other cells in the body. Besides their primary role in breaking down complex organic molecules, peroxisomes can also synthesize specific macromolecules and participate in...
Peroxisomes and Mitochondria01:30

Peroxisomes and Mitochondria

Peroxisomes and mitochondria are two important oxygen-utilizing organelles in eukaryotic cells. Mitochondria carry out cellular respiration—the process that converts energy from food into ATP. Peroxisomes carry out a variety of functions, primarily breaking down different substances, such as fatty acids.
The peroxisome is a single membrane-bound cellular organelle that can perform several different functions, including lipid metabolism and chemical detoxification. The enzymes within peroxisomes...
Protein Import into the Peroxisomes01:27

Protein Import into the Peroxisomes

Cells contain membrane-bound organelles called peroxisomes that oxidize organic molecules by transferring hydrogen atoms to oxygen, producing hydrogen peroxide. Peroxisomes enzymatically convert the released hydrogen peroxide into water and oxygen.
Peroxisomal Protein Import:
Peroxisomes lack the genetic machinery required to code for their own proteins. Hence, most peroxisomal membrane, lumenal and transmembrane proteins are synthesized in the cytoplasm or ER and transported to the peroxisome...
Porin Insertion in the Outer Mitochondrial Membrane01:12

Porin Insertion in the Outer Mitochondrial Membrane

Porins are beta-barrel proteins translocated to the mitochondrial outer membrane through the TOM complex into the intermembrane space. Porin precursors bind TIM chaperones within the intermembrane space and are guided to the Sorting and Assembly Machinery complex or SAM complex on the outer mitochondrial membrane.
Three models describe the assembly of porins by the SAM complex and their insertion into the outer membrane. Model 1 suggests that porins are assembled outside the SAM channel as the...
Export of Misfolded Proteins out of the ER01:32

Export of Misfolded Proteins out of the ER

After folding, the ER assesses the quality of secretory and membrane proteins. The correctly folded proteins are cleared by the calnexin cycle for transport to their final destination, while misfolded proteins are held back in the ER lumen. The ER chaperones attempt to unfold and refold the misfolded proteins but sometimes fail to achieve the correct native conformation. Such terminally misfolded proteins are then exported to the cytosol by ER-associated degradation or ERAD pathway for...

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Related Experiment Video

Updated: May 25, 2026

Peroxisome Staining in Mammalian Cells Using Peroxisome-Specific Probes
05:57

Peroxisome Staining in Mammalian Cells Using Peroxisome-Specific Probes

Published on: December 19, 2025

Peroxisome biogenesis and function.

Navneet Kaur, Sigrun Reumann, Jianping Hu

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

    This review summarizes recent advances in understanding plant peroxisomes, highlighting genetic and cell biology studies. It emphasizes how large-scale analyses improve knowledge of peroxisome biogenesis and metabolism in Arabidopsis.

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    Measurement of Fatty Acid β-Oxidation in a Suspension of Freshly Isolated Mouse Hepatocytes

    Published on: September 9, 2021

    Area of Science:

    • Plant cell biology
    • Molecular biology
    • Biochemistry

    Background:

    • Peroxisomes are vital single-membrane organelles in plants, crucial for growth and development.
    • They perform diverse metabolic functions essential for plant life.
    • Recent genetic and cell biology studies in Arabidopsis have identified key peroxisome proteins and functions.

    Purpose of the Study:

    • To review recent progress in understanding peroxisome biogenesis and metabolism in plants.
    • To explore the role of large-scale analyses in advancing peroxisome research.
    • To consolidate current knowledge on peroxisome function in Arabidopsis.

    Main Methods:

    • Forward and reverse genetic studies
    • Biochemical analyses
    • Cell biological analyses
    • In silico predictions
    • Proteomics

    Main Results:

    • Identification of numerous peroxisome proteins and elucidation of their functions.
    • Advances in understanding the pathways of peroxisome biogenesis.
    • Insights into the metabolic roles of peroxisomes in plants.
    • Demonstration of the utility of large-scale data in peroxisome research.

    Conclusions:

    • Significant progress has been made in understanding plant peroxisomes.
    • Integrated approaches, including large-scale analyses, are crucial for future discoveries.
    • Further research on peroxisomes will enhance our understanding of plant growth and development.