PolySacDb

A Database of Polysachharide 3D structures

 
By A. Sarkar & S. Pérez
 
 
 

Polysaccharides For Experts

Welan (Welan-Ca)

 

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Diffraction Diagram

 

Fig.1 X-ray diffraction pattern from a well oriented and polycrystalline fiber of calcium welan

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Structures are best viewed using PyMol & Sybyl

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  Welan (Welan-Ca)

Linkage :       beta 1-4      alpha 1-3

 

Space Group :       trigonal P31

 

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) =   20.83

b (Å) =   20.83

c (Å) =   28.69

 

γ (°) =   120.00

 

Helix Type :      

half-staggered, parallel, double-helix

 

Method(s) Used For Structure Determination :      

X-ray diffraction

 

Link to the Abstract :      
 
http://www.ncbi.nlm.nih.gov/pubmed/8137360

 

Reference :      

Structural roles of calcium ions and side chains in welan: an X-ray study
Chandrasekaran, R., Radha, A. and Lee, E. J., Carbohydrate Research 1994, 252, 183-207

 

 

Download Structure

Unit          welan-Ca_expanded

 

 

 

 

 
   
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