Endotoxin and Exotoxin

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Endotoxin and exotoxin are the two forms of toxins that the bacteria produce to target other bacteria or host cells.

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The virulence components of bacteria that alter host cell function are called toxins. It can be used for creating biological weapons.

Endotoxin

Endo + toxin = cell-associated toxin

Produced by gram-negative bacteria. Endotoxins are lipopolysaccharides that are secreted by bacteria or other microorganisms and are only released into the environment when they die. It is an essential component for the survival of bacteria.

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Structure of endotoxin

Secretion of Endotoxin

Exotoxin

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Exo+ toxin= outside of cell

produced by gram-positive bacteria, which makes them extremely toxic and hazardous.

Exotoxins are polypeptides that bacteria produce in their surroundings.

Secretion of Exotoxin

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Some examples are Streptococcus pyogenes, Bacillus cereus, and so on.

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Difference between Endotoxin and Exotoxin

FAQs

Which is highly toxic, endotoxin or exotoxin? Ans: Exotoxins are highly toxic.

Is salmonella endotoxin or Exotoxin? Ans: salmonella is endotoxin.

Are Exotoxins gram positive or negative? Ans: Exotoxins are produced by gram-positive bacteria..

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