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Oxidase

oxidase

Classically, one of a group of enzymes, now termed oxidoreductases (EC class 1), that bring about oxidation by the addition of oxygen to a metabolite or by the removal of hydrogen or of one or more electrons. Oxidase is now used for those cases in which O2 acts as an acceptor (of H or of electrons); those removing hydrogen are now termed dehydrogenases. For individual oxidases, see the specific names.

direct oxidase, originally, an oxidase catalyzing the transfer of O2 directly to other bodies; now termed oxygenase.

indirect oxidase, originally, an oxidase that acts by reducing a peroxide; now termed peroxidase.

terminal oxidase, the last protein in the electron transport, respiratory chain. In mammals this is cytochrome c oxidase. Any of the enzymes that catalyze biological oxidation.Oxidase is an [[enzyme which is capable of adding [[ oxygen to a substance, where hydrogen is usually released as a by-product which can bind with oxygen to form water.


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Streptococcus sanguis??

... matched up my micro - organism? Gram reaction:+ Shape: cocci Acid-fast: - Spores: - Motility: - Grows in air: + Grows anaerobically: + Catalase: - Oxidase: - Acid from glucose: + OF test: : F Gas from glucose: - Acid from sucrose: + Acid from lactose: + Acid from maltose: + Acid from mannitol: ...

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by microbiologyhelp
Fri Dec 20, 2013 10:08 pm
 
Forum: Microbiology
Topic: Streptococcus sanguis??
Replies: 1
Views: 2232

ID OF UNKNOWN?!?!

... the results obtained indicate Gram reaction:+ Shape: cocci Acid-fast: - Spores: - Motility: - Grows in air: + Grows anaerobically: + Catalase: - Oxidase: - Acid from glucose: + OF test: : F Gas from glucose: - Acid from sucrose: + Acid from lactose: + Acid from maltose: + Acid from mannitol: ...

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by microbiologyhelp
Fri Dec 06, 2013 10:59 am
 
Forum: Microbiology
Topic: ID OF UNKNOWN?!?!
Replies: 5
Views: 3523

Re:

... research and found out that... Gram reaction:+ Shape: cocci Acid-fast: - Spores: - Motility: - Grows in air: + Grows anaerobically: + Catalase: - Oxidase: - Acid from glucose: + OF test: : F Gas from glucose: - Acid from sucrose: + Acid from lactose: + Acid from maltose: + Acid from mannitol: ...

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by microbiologyhelp
Sun Dec 01, 2013 11:36 am
 
Forum: Microbiology
Topic: URGENT HELP IDENTIFYING UNKNOWN BACTERIA!!!
Replies: 6
Views: 5645

URGENT HELP IDENTIFYING UNKNOWN BACTERIA!!!

... Agar – Anaerobic BLOOD AGAR PLATE: B-Haemolysis HUGH AND LEIFSON’S O/F TEST: Negative ANTIBIOTIC SENSITIVITY- Resistant. CATALASE- NEGATIVE OXIDASE- POSITIVE FERMENTATION: OF GLUCOSE – NEGATIVE, MANNITOL – NEGATIVE, DULCITOL – NEGATIVE (A) ACID PRODUCTION MEDIUM YELLOW BUT NO GAS IN DURHAM ...

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by microbiologyhelp
Wed Nov 20, 2013 6:09 pm
 
Forum: Microbiology
Topic: URGENT HELP IDENTIFYING UNKNOWN BACTERIA!!!
Replies: 6
Views: 5645

Help with unknown

... facultative anaerobe Motility + Citrate + MR - (Unsure of the MRVP results, so not using it as a reliable test) VP - Sulfur - Indole - Catalase + Oxidase/Kovac's - EMB plate showed a maroonish color Mannitol and gas + Glucose and gas + Lactose - Phenylalanine - Nitrate to nitrite + Amylase - Protease ...

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by kayleighat
Sun Oct 20, 2013 2:43 am
 
Forum: Microbiology
Topic: Help with unknown
Replies: 0
Views: 2703
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