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Arabinose

Arabinose

(Science: biochemistry, chemical) a pentose monosaccharide that occurs in both D and L configurations.

D arabinose is the 2 epimer of D ribose, i.e. Differs from D ribose by having the opposite configuration at carbon 2. D arabinose occurs inter alia in the polysaccharide arabinogalactan, a neutral pectin of the cell wall of plants and in the metabolites cytosine arabinoside and adenine arabinoside.


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IBO 2003 questions- please help me out

... DOOM. Galactose is a toxic compound for the cells which have galE– mutation. Which cells with this mutation will grow in the IPTG+PG medium (with arabinose as an additional source of carbon and energy available)? А. lacI −. B. lacZ −. C. lacA −. D. lacI − lacA −. I have no idea what transacetylase ...

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by MrMistery
Tue May 13, 2008 6:16 pm
 
Forum: Cell Biology
Topic: IBO 2003 questions- please help me out
Replies: 9
Views: 1377

Re: IBO 2003 questions- please help me out

... B. No. Galactose is a toxic compound for the cells which have galE– mutation. Which cells with this mutation will grow in the IPTG+PG medium (with arabinose as an additional source of carbon and energy available)? А. lacI −. B. lacZ −. C. lacA −. D. lacI − lacA −. My choices are options A and B ...

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by tittu
Mon May 12, 2008 2:41 pm
 
Forum: Cell Biology
Topic: IBO 2003 questions- please help me out
Replies: 9
Views: 1377

is it micrococcus luteus or staphylococus aureus

... little growth ENTEROTUBE Glucose positive Lysine negatie Ornithine negative Hydrogen sulfide/indole negative Adonitol negative Lactose negative Arabinose negative Sorbitol negative Voges-Proskauer negative Dulcitol negative Urea positive Citrate positive HELP, please. The best help would be ...

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by mickshrink
Sat May 03, 2008 11:09 pm
 
Forum: Microbiology
Topic: is it micrococcus luteus or staphylococus aureus
Replies: 1
Views: 2398

help identifying unknown bacteria

... so I had narrowed it down to those in the Bacillus spp. These were the results of the tests I performed: Catalase + Mannitol - Voges-Proskauer - Arabinose - Citrate - I thought I had Bacillus cereus , but my confirmation test (Citrate) was negative. Not to mention that streak and incubation on ...

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by creidesca
Sat Dec 01, 2007 7:20 pm
 
Forum: Microbiology
Topic: help identifying unknown bacteria
Replies: 5
Views: 13689

Starch and Sugars. Starch-containing products "sugar-f

... BMW and Mercedes. There are many other monosacharides except those, just like there are many other cars except those. examples include mannose, arabinose, ribose etc

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by MrMistery
Tue Jan 16, 2007 4:27 pm
 
Forum: General Discussion
Topic: Starch and Sugars. Starch-containing products "sugar-f
Replies: 5
Views: 2505
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