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Arabinose

Definition

noun

A five-carbon monosaccharide that naturally occurs as a constituent in various plant and bacterial polysaccharides


Supplement

Arabinose occurs in Dextro- and Levo- configurations. The L-arabinose is abundant in nature and can be obtained from hemicelluloses and gums in many plants. Synthetically, it is produced to be used mainly as culture medium for certain bacteria.


Word origin: arabin (gum)

Molecular formula: C 5 H10 O5

Synonym(s):

Related terms:


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Re: E.coli Genotype

I believe that the ∆(ara, leu) simply means that your strain of bacteria cannot catabolize arabinose or leucine. http://en.wikipedia.org/wiki/Bacterial_genetic_nomenclature

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by kdean
Tue Nov 06, 2012 4:18 pm
 
Forum: Molecular Biology
Topic: E.coli Genotype
Replies: 4
Views: 3441

E.coli Genotype

just try to add the arabinose and you will see ;)

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by JackBean
Thu Dec 15, 2011 10:43 am
 
Forum: Molecular Biology
Topic: E.coli Genotype
Replies: 4
Views: 3441

E.coli Genotype

... about the combination of araD139 and Δ(ara-leu) in the genotype. araD139 means, that a mutation in L-ribulose-phosphate 4-epimerase blocks arabinose metabolism and Δ(ara-leu) means, that the ability to built arabinose (and leucine) is deleted. Can somebody help me and tell me if or if not ...

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by Kiki11
Thu Dec 15, 2011 10:25 am
 
Forum: Molecular Biology
Topic: E.coli Genotype
Replies: 4
Views: 3441

final concentration

... -The later is used for solids (salts, sugar,...) and represent the weight of solute(in grams) in a 100ml final solution. i.e. a 10% solution of arabinose contains 10g of arabinose in a 100ml volume. This is the kind of thing you are dealing with. Now since you can calculate the number of moles ...

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by canalon
Wed Mar 23, 2011 10:05 pm
 
Forum: Molecular Biology
Topic: final concentration
Replies: 16
Views: 7944

*HELP* Identification of unknown bacteria

... API 20NE : +ve gas NO2, esculin ferric citrate, gelatin. -ve gas N2, L–tryptophane, D–glucose, L–arginine, urease, β–galactosidase, D–glucose, L– arabinose, D–mannose, D–mannitol, N–acetyl–glucosamine, D–maltose, potasium gluconate, acid capric, acid adipic, acid malic, trissodium citrate, acid ...

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by ajidangmoon
Wed Mar 23, 2011 3:10 pm
 
Forum: Microbiology
Topic: *HELP* Identification of unknown bacteria
Replies: 5
Views: 6746
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