antibiotics again...

Chris cyost at
Mon Dec 14 23:33:34 EST 1998

Joshua Souweine wrote:
> Antibiotics are generally organic molecules which are synthesized by fungi.
> A good example of that is penicillin.  Later research was able to alter
> these molecule to allow synthetic antibiotics such as ampicillin, or
> amoxicillin.

Most antibiotics (common ones) are  produced by bacteria, Streptomyces spp in particular.
> Antimicrobial agents are usually chemicals such as ethanol, Lysol, etc.
> Lysozyme is an enzyme which degrades proteins of all sorts, including
> bacterial proteins, that is why it is contained within vesicles in the
> eukaryotic cell.
Lysozyme does not degrade many different proteins.  In fact it is specific for
bacterial cell murein (cell wall) and chitin (cell wall component) in fungi
and invertebrates.  It is most potent against Gram positive bacteria.  Gram
negative bacteria have an outer membrane offering some protection to their
cell wall from attack by lysozyme.

Chris Yost
cyost at

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