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maud101

  • 3 years ago

Are exotoxins only secreted by gram-negative bacteria? I read that LPS are the same as exotoxins, so it would follow that only gram-negative secrete them.

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  1. agreene
    • 3 years ago
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    this is a pretty common misconception, more info here: http://textbookofbacteriology.net/proteintoxins.html

  2. maud101
    • 3 years ago
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    I read the article, and it confirmed what I said. Am I confusing something still?

  3. agreene
    • 3 years ago
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    maybe I'm just being stupid then, sorry im rather tired, let me re-read the article, i just real quickly scimmed it...

  4. maud101
    • 3 years ago
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    I might be wrong. I am just trying to figure out whether exotoxins and LPS are the same, in which case they don't pertain to gram-positive.

  5. agreene
    • 3 years ago
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    yeah sorry, i misread the bit about endotoxins as being about exotoxins... just a bit tired... lol

  6. agreene
    • 3 years ago
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    exotoxins dont have to be LPS, but LPS are exotoxins, If im remembering correctly.

  7. maud101
    • 3 years ago
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    So gram-positive bacteria can secrete exotoxins?

  8. agreene
    • 3 years ago
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    Yes, if I'm not going crazy due to sleep deprivation, lol

  9. maud101
    • 3 years ago
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    Haha no problem. Thanks.

  10. DocNomi
    • 3 years ago
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    exotoxins are mostly produced by gram + ones and endotoxins by gram - ones. LPS is not an exotoxin it is present in gram negative bacterial cell wall and it's lipid A component works as an endotoxin thatis notorious for gram negative sepsis and systemic symptoms.

  11. Dean.Shyy
    • 3 years ago
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    This may help you: http://is.gd/DT6dBy

  12. maud101
    • 3 years ago
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    I was confusing the exotoxins and endotoxins with where they were coming from. Thank you @DocNomi

  13. DocNomi
    • 3 years ago
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    You are always welcome @maud101

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