Glyoxysome: Difference between revisions
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Thus, glyoxysomes (as all peroxisomes) contain [[enzymes]] that initiate the breakdown of [[fatty acid]]s and additionally possess the enzymes to produce intermediate products for the synthesis of [[sugars]] by [[gluconeogenesis]]. The seedling uses these sugars synthesized from fats until it is mature enough to produce them by [[photosynthesis]]. |
Thus, glyoxysomes (as all peroxisomes) contain [[enzymes]] that initiate the breakdown of [[fatty acid]]s and additionally possess the enzymes to produce intermediate products for the synthesis of [[sugars]] by [[gluconeogenesis]]. The seedling uses these sugars synthesized from fats until it is mature enough to produce them by [[photosynthesis]]. |
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==References== |
==References== |
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* [http://www.biologie.uni-hamburg.de/b-online/e23/23c.htm Sengbusch, Peter V. (2003) ''Botany online: Peroxysomes and Glyoxysomes''] |
* [http://www.biologie.uni-hamburg.de/b-online/e23/23c.htm Sengbusch, Peter V. (2003) ''Botany online: Peroxysomes and Glyoxysomes''] |
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Revision as of 01:35, 9 September 2011
Glyoxysomes are specialized peroxisomes found in plants (particularly in the fat storage tissues of germinating seeds) and also in filamentous fungi. As in all peroxisomes, in glyoxysomes the fatty acids are hydrolyzed to acetyl-CoA by peroxisomal β-oxidation enzymes. Besides peroxisomal functions, glyoxysomes possess additionally the key enzymes of glyoxylate cycle (isocitrate lyase and malate synthase) which accomplish the glyoxylate cycle bypass.
Thus, glyoxysomes (as all peroxisomes) contain enzymes that initiate the breakdown of fatty acids and additionally possess the enzymes to produce intermediate products for the synthesis of sugars by gluconeogenesis. The seedling uses these sugars synthesized from fats until it is mature enough to produce them by photosynthesis.
References
- Sengbusch, Peter V. (2003) Botany online: Peroxysomes and Glyoxysomes
- UniProt Knowledgebase keyword: Glyoxysome
External links
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