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Peroxisome

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Peroxisomes are ubiquitous organelles in eukaryotes that participate in the metabolism of fatty acids and other metabolites. Peroxisomes have enzymes that rid the cell of toxic peroxides.


Peroxisomes are ubiquitous organelles in eukaryotes. They consist of a single membrane that separates them from the cytosol (the internal fluid of the cell). Peroxisomes were discovered by Christian de Duve in 1965.

Peroxisomes - Biology Encyclopedia forum
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Peroxisomes - Another Enzyme Package
There are many ways that peroxisomes are similar to lysosomes. They are small vesicles found around the cell. They have a single membrane that contains digestive enzymes for breaking down toxic materials in the cell.

Peroxisomes
Microbodies are a diverse group of organelles that are found in the cytoplasm of almost all cells, roughly spherical, and bound by a single membrane. There are several types of microbodies, including lysosomes, but peroxisomes are the most common.

Peroxisomes
Peroxisomes are about the size of lysosomes (0.5-1.5 µm) and like them are bound by a single membrane. They also resemble lysosomes in being filled with enzymes.

Peroxisome
Cell organelle containing enzymes involved in the production or destruction of hydrogen peroxide (H2O2).
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Peroxisomes
Peroxisomes are single-membrane structures found in all eukaryotic cells. They are small, membrane-bound structures that use molecular oxygen to oxidize organic molecules. The structure is one of the major oxygen utilizing organelles, the other being the mitochondria.

peroxisome
(per-oks-eh-some)
A microbody containing enzymes that transfer hydrogen from various substrates to oxygen, producing and then degrading hydrogen peroxide.
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Peroxisome
Eukaryotic organelle that degrades fatty acids and amino acids
Also degrades the resulting hydrogen peroxide
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peroxisomes Membrane-bound vesicles in eukaryotic cells that contain oxidative enzymes.
pesticides Chemicals that are applied to agricultural crops or domesticated plants and which kill or inhibit growth of insects.

peroxisome /pə-ROCKS-ə-soam/ n. In a eukaryotic cell, small organelles ("microbodies") containing enzymes that transfer hydrogen to oxygen from various substrates.

Peroxisomes generate and degrade H2O2 in performing various metabolic functions.
Peroxisomes contain enzymes that transfer hydrogen from various substrates to oxygen.

peroxisome cytoplasmic body containing enzymes for digestion.
phagocytes cells that attack and engulf invading microorganisms.

peroxisome
Small organelle in eukaryotic cells whose functions include degradation of fatty acids and amino acids by means of reactions that generate hydrogen peroxide, which is converted to water and oxygen by catalase.
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Peroxisome: Peroxisomes are membrane-bound packets of oxidative enzymes. In plant cells, peroxisomes play a variety of roles including converting fatty acids to sugar and assisting chloroplasts in photorespiration.

Peroxisomes or Microbodies
Produce and degrade hydrogen peroxide, a toxic compound that can be produced during metabolism.
Cell wall
Plants have a rigid cell wall in addition to their cell membranes.

peroxisomes - small membrane -bounded organelle that uses molecular oxygen to oxidize organic molecules.

peroxisome A cellular microbody containing enzymes involved with photorespiration and photosynthesis.
peroxisome A microbody found in leaves and often associated with chloroplasts.
peroxisomes Small organelles containing enzymes of the glyoxylate cycle, catalase, and peroxidases.

Wagner KD, Wagner N: Peroxisome proliferator-activated receptor beta/delta (PPARbeta/delta) acts as regulator of metabolism linked to multiple cellular functions. ...

Similarities: lysosomes and peroxisomes are small membranous vesicles that contain enzymes and enclose residual substances from internal or external origin degrading them.

For example, 3 of the 11 genes predicted in the category 'acyl-CoA/fatty acid/peroxisome' encode a short-chain dehydrogenase motif, suggesting that they are metabolic enzymes.

The proteins found in the nucleus, mitochondria, chloroplasts, cytoplasm, and peroxisomes are all synthesized on free ribosomes in the cytoplasm and not on the RER. They form polyribosomes which are attached to one another when they are reading the same messenger RNA.

See also: See also: Cell, Cells, Organ, Protein, Membrane

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