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Microbodies:
A microbody can thus be defined as a cytoplasmic organelle that is more or less
globular in shape
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They are considered as containers for metabolic activity
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Some of them include peroxisomes, glyoxysomes,
glycosomes, and Woronin bodies
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These are also called
cytosomes
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2-1
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Microbodies can be seen in the cytoplasm of a cell, but they will be
visible only through an electron microscope
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Classification:
The enzymes present in microbodies take part in the preparatory or intermediate stages of
various biochemical reactions happening within the cell
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Generally, detoxification of peroxides and
photorespiration in plants are major functions of microbodies
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Some important microbodies include:
i) Glyoxysomes
ii) Peroxisomes
iii) Glycosomes and
iv) Woronin bodies
1
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They are mainly involved in the metabolism of fatty acids along with
other metabolites
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Peroxisomes are single membrane-bound bodies
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The
membrane proteins are critical for various functions including import of proteins into
the organelles and proliferation
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2
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Be it germinating seeds of plants
or filamentous fungi, these microbodies will be there
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Peroxisomes are

responsible for f b-oxidation (break down fats and produce Acetyl-CoA) and other
important pathways including amino acid and bile acid metabolism, along with
oxidation or detoxification of various harmful compounds in the liver like alcohol
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Some of them
are as follows:
In animal cells, microbodies can be found in the form of peroxisomes
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They also contain the enzymes
catalase, oxidase and peroxidase for the breakdown of hydrogen peroxide (a harmful
byproduct of other chemical reactions) to water molecules
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They also possess crucial enzymes for the Glyoxylate cycle
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Oxidative enzymes, like catalase, D-amino acid oxidase, and uric acid oxidase (except
in humans) are found in peroxisomes
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II
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Peroxisomes bring about β-oxidation of very long chain fatty acids and  α-oxidation of
branched chain fatty acids to break down fatty acids
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Glyoxysomes help in the synthesis of sugar by the process of gluconeogenesis
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In plant cells, these microbodies may appear to be dividing or may be found in an
interconnected or tubular state

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