PolySacDb

A Database of Polysachharide 3D structures

 
By A. Sarkar & S. Pérez
 
 
 

Polysaccharides For Experts

Xanthan

 

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Diffraction Diagram

 

Fig.1 Diffraction pattern typical for both Xanthomonas campestrisand Xanthomonas phaseolipolysaccharides showing five-fold helical symmetry. The sharp Bragg reflection on the equator has a spacing of 1.9 nm.

*Permission Pending for Diffraction Diagrams

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Structures are best viewed using PyMol & Sybyl

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  Xanthan

Linkage :       beta 1-4      alpha 1-3

 

Space Group :       -

 

Unit Cell Dimensions (a, b, c in Å and α, β, γ in °)

(No values are displayed if no information is available or the value is zero)

a (Å) =   29.00

b (Å) =   24.90

c (Å) =   47.00

 

γ (°) =   90.00

 

Helix Type :      

-

 

Method(s) Used For Structure Determination :      

X-ray diffraction and computer-aided model building

 

Link to the Abstract :      
 
http://pubs.acs.org/doi/abs/10.1021/bk-1977-0045.ch007

 

Reference :      

Xanthan Gum?Molecular Conformation and Interactions
Moorhouse, R., Walkinshaw, M.D. and Arnott, S., Acs. Symp. Ser. 1977, 45, 90-102

 

 

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Unit          xanthan_expanded

 

 

 

 

 
   
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