peroxisome

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Related to peroxisomal: peroxisomal disease

peroxisome

 [pĕ-roks´ĭ-sōm]
a microbody found in vertebrate animal cells, especially kidney and liver cells, that contains urate oxidase, amino acid oxidase, catalase, and other enzymes.

pe·rox·i·some

(pĕ-rok'si-sōm),
A membrane-bound organelle occurring in many eukaryotic cells that often has an electron-dense crystalline inclusion containing catalase, urate oxidase, and other oxidative enzymes relating to the formation and degradation of H2O2; thought to be important in detoxifying various molecules and in catalyzing the breakdown of fatty acids to acetyl-CoA; an absence of peroxisomes is found in patients with Zellweger syndrome.
[peroxide + G. sōma, body]

peroxisome

/per·ox·i·some/ (-ok´sĭ-sōm)
1. any of the microbodies present in vertebrate animal cells, especially liver and kidney cells, which are rich in the enzymes peroxidase, catalase, d-amino acid oxidase, and, to a lesser extent, urate oxidase.
2. microbody (1).

peroxisome

(pə-rŏk′sĭ-sōm′)
n.
A cell organelle containing a large number of enzymes, including catalase and oxidase, that break down long-chain fatty acids and other organic molecules. The hydrogen peroxide produced by these reactions is also broken down within the peroxisome.

per·ox′i·som′al (-sō′məl) adj.

peroxisome

[pər·ok′si·sōm]
any of the microbodies present in vertebrate animal cells, especially liver and kidney cells, that are rich in the enzymes peroxidase, catalase, d-amino acid oxidase, and, to a lesser extent, urate oxidase. Their functions are not fully understood, but they participate in metabolic oxidations involving hydrogen peroxide, purine metabolism, cellular lipid metabolism, and gluconeogenesis. See microbody.

pe·rox·i·some

(pĕr-ok'si-sōm)
A membrane-bound organelle occurring in nearly all eukaryotic cells that often contains oxidative enzymes relating to the formation and degradation of H2O2.
Synonym(s): microbody.
[peroxide + G. sōma, body]

peroxisome

an organelle of EUKARYOTE cells which is surrounded by a single unit membrane. Peroxisomes contain PEROXIDASES and may be concerned with the production of molecular oxygen from the breakdown of hydrogen peroxide. They are located near MITOCHONDRIA and plant CHLOROPLASTS, and appear to be involved in CELLULAR RESPIRATION.

peroxisome

a membrane-bound body found in vertebrate animal cells, especially kidney and liver cells, that contains urate oxidase, amino acid oxidase, catalase and other enzymes.
References in periodicals archive ?
Results indicate that CLA may control peroxisomal oxidation of fatty acids through up-regulation of hepatic ACO gene expression.
Overexpression of an Arabidopsis peroxisomal ascorbate peroxidase gene in tobacco increases protection against oxidative stress.
Internationally, the newborn screening laboratory in Taiwan is setting up ALD newborn screening with the help in methodology from the Peroxisomal Laboratory at Kennedy Krieger Institute and positive control samples from the newborn screening group at the Centers for Disease Control.
Mouse PEP: A novel peroxisomal protein linked to myoblast differentiation and development.
Thereby, carnitine helps to maintain adequate cellular levels of free CoA; furthermore, products from the peroxisomal [beta]-oxidation system, including acetyl-CoA, are transported as carnitineesters from peroxisomes to mitochondria for complete degradation to C[O.
Peroxisomal localization of inducible nitric oxide synthase in hepatocytes.
These genes include, among others, those that code for the peroxisomal proliferators-activated receptors (PPARs) and the retinoid X receptors (RXR).
It is associated with a deficiency of lignoceroyl-coenzyme A ligase, a peroxisomal enzyme needed for the oxidation of saturated very-long-chain fatty acids (VLCFAs).
These results suggested that the peroxisomal receptor protein, OsPex5p, plays a critical role in the rice defense system against diverse external stresses including fungal pathogenic attack.
A rapid screening procedure for the diagnosis of peroxisomal disorders: quantification of very long-chain fatty acids, as dimethylaminoethyl esters, in plasma and blood spots, by electrospray tandem mass spectrometry.
Particular topics include pathways of post-transcriptional gene regulation in mammalian germ cell development, chromatin dynamics in the male meiotic prophase, prion proteins and infertility, specific arrests of spermatogenesis in genetically modified and mutant mice, and expression of peroxisomal proteins as evidence of the presence of peroxisomes in the male germ cell line GC1spg.