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Coagulase

Coagulase

Any bacterial component or product which causes coagulation in plasma containing an anticoagulant such as citrate, heparin or oxalate. Coagulases are produced by certain staphylococci and by yersinia pestis. Staphylococci produce two types of coagulase: staphylocoagulase, a free coagulase that produces true clotting of plasma, and staphylococcal clumping factor, a bound coagulase in the cell wall that induces clumping of cells in the presence of fibrinogen.


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my unknown

Do you have the means to test for coagulase in your lab? S. aureus will be coagulase (+), S. epidermidis and others will be coagulase (-). You may have access to TGA (Tellurite-Glycine Agar) plates, which differentiate coagulase + (black pigmented ...

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by gakerty
Wed May 13, 2009 5:22 pm
 
Forum: Microbiology
Topic: my unknown
Replies: 2
Views: 377

Identifying unknown

... the butt was yellow, slant pink and produce minimal gas. Indole test positive. It reduced nitrate. Oxidase negative, catalase positive but weak, coagulase negative, b hemolitic and had motility. Motility test done in motility medium. If anyone has any suggestions on what this is or can direct ...

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by mccullyj
Fri Apr 24, 2009 10:22 pm
 
Forum: Microbiology
Topic: Identifying unknown
Replies: 1
Views: 1135

M Biology

... decarboxylase Positive, decarboxylase of ornithine Nitrate reduction Alot Nitrate Present Oxidase Oxidase Negative Catalase Strong Reaction Coagulase Negative Result, no clot Hemolysis β-Hemolysis Motility Very Motile Thank you for any help!

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by ottotrac
Wed Apr 22, 2009 4:43 pm
 
Forum: Microbiology
Topic: M Biology
Replies: 0
Views: 507

Re: Help Identifying Unknown Bacteria

... gram negative cocci. This bacteria grows really quickly and the colonies are at a normal size. Coagulase positive. Peroxide: negative It’s aerobic & Facultative. I’ve done an entertube test which showed it had: glucose/gas, lactose and urea. ...

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by nawahi
Tue Nov 25, 2008 9:44 pm
 
Forum: Microbiology
Topic: Help Identifying Unknown Bacteria
Replies: 6
Views: 2427

Help Identifying Unknown Bacteria

... gram negative cocci. This bacteria grows really quickly and the colonies are at a normal size. Coagulase positive. Peroxide: negative It’s aerobic & Facultative. I’ve done an entertube test which showed it had: glucose/gas, lactose and urea. ...

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by nawahi
Sun Nov 23, 2008 7:20 am
 
Forum: Microbiology
Topic: Help Identifying Unknown Bacteria
Replies: 6
Views: 2427
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