Thursday 13 August 2015

PeROXIsomes!!

Hey everyone, welcome to the cell...
not a jail cell, cell biology.

Today we will learn something about peroxisomes.
Pero in latino means but't' so I guess it basically means buttsome :p. Just kidding.

No filthy jokes, please.

Alright alright.
Peroxisomes unfortunately doesn't refers to any kinky stuff :(

Peroxisomes are found in all and any type of eukaryotic cell. They house variety of oxidative enzymes like catalase or oxidase. Just like mitochondria, they are the sites for oxidation utilization.

Peroxisomes are so named because they usually contain one or more enzymes that use molecular oxygen to remove hydrogen atoms from specific organic substrates (designated here as R) in an oxidative reaction that produces hydrogen peroxide (H2O2):

RH2 + O2 = R + H2O2


  • This type of oxidative reaction is particularly important in liver and kidney cells, where the peroxisomes detoxify various toxic molecules that enter the bloodstream. About 25% of the ethanol we drink is oxidized to acetaldehyde in this way. 


  • Breakdown of fatty acid molecules.

  • Catalyzes the first reactions in the formation of plasmalogens, which are the most abundant class of phospholipids in myelin Deficiency of plasmalogens causes profound abnormalities in the myelination of nerve cells, which lead to neurological disease.

  • Two different types in plants. One type is present in leaves, where it catalyzes the oxidation of a side product of the crucial reaction that fixes CO2 in carbohydrate.
  • Second in seeds, known as glyoxysomes as they carry out break down of fats to sugars by glyoxylate pathway.


  • The last added benefit is that they require shorter signal sequences for protein transportation.


That's all, hope it helps you. Disorders related to peroxisomes to come shortly.
Till then have fun with pero :p
Be amazing <
-Staph. 

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