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Hemolysin

Definition

noun, plural: hemolysins

An agent or substance that causes hemolysis.


Supplement

Hemolysin may be an exotoxin protein produced by bacteria which can cause lysis of red blood cells, releasing hemologlobin.


Word origin: NL, comb. form repr. Gk haǐma blood + lysin.

Related phrases: kanagawa hemolysin.

See also: hemolysis.


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Re:

... dark spot seems to be created by the administration of bacteriophages, as indicated in the text. The answer for the second question depends on the hemolysin in question, but most are expressed only in specific conditions. For example, the presence of iron inactivates some types of hemolysin expression ...

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by triton
Wed Aug 22, 2012 11:53 am
 
Forum: Microbiology
Topic: Black coloration of sheep blood agar
Replies: 3
Views: 6322

Black coloration of sheep blood agar

... dark spot seems to be created by the administration of bacteriophages, as indicated in the text. The answer for the second question depends on the hemolysin in question, but most are expressed only in specific conditions. For example, the presence of iron inactivates some types of hemolysin expression ...

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by biohazard
Wed Aug 22, 2012 11:27 am
 
Forum: Microbiology
Topic: Black coloration of sheep blood agar
Replies: 3
Views: 6322

Black coloration of sheep blood agar

... I can tell you exact composition of medium that was used, if it is important. The second question is: is expression of hemolysin specific for certain conditions? I can see hemolysin encoded in the genome, but I fail to observe hemolysis on plates. Thank you so much.

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by triton
Wed Aug 22, 2012 8:19 am
 
Forum: Microbiology
Topic: Black coloration of sheep blood agar
Replies: 3
Views: 6322

URGENT I Need Help!!! Re: leukocytes

... even looked at anything relating to biology. Is eosinophils or exocytosis the transport system or is it the toxin that is released? I read that Hemolysin which is produced by E-coli has a cytotoxic affect on leukocytes.

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by dogsrus
Fri Mar 30, 2007 3:54 am
 
Forum: Human Biology
Topic: URGENT I Need Help!!! Re: leukocytes
Replies: 6
Views: 2980

The Fiber Disease

Hi All, Hartuk wrote: This could be an explanation/description of the "Cellulitis" that affects many people..... Alpha-Hemolysin: Self-Assembling Transmembrane Pore "In its fight for resources, bacterium Staphylococcus aureus secretes alpha-hemolysin monomers that bind to ...

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by reliefseeker
Fri Nov 24, 2006 1:50 pm
 
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
Views: 5429424
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