PolySacDb

A Database of Polysachharide 3D structures

 
By A. Sarkar & S. Pérez
 
 
 

Polysaccharides For Experts

Dextran (high T polymorph)

 

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Diffraction Diagram

 

Fig.1 X-ray diffraction diagram of anhydrous dextran (flat film, under vacuum).

*Permission Pending for Diffraction Diagrams

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  Dextran (high T polymorph)

Linkage :       alpha 1-6      alpha 1-4

 

Space Group :       monoclinic P21

 

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) =   9.22

b (Å) =   9.22

c (Å) =   7.78

 

β (°) =   91.30

 

Helix Type :      

Two antiparallel-packed molecular chains

 

Method(s) Used For Structure Determination :      

X-ray fibre diffraction, electron diffraction and stereochemical model refinement

 

Link to the Abstract :      
 
http://pubs.acs.org/doi/abs/10.1021/ma00131a017

 

Reference :      

Molecular and crystal structure of dextrans: a combined electron and x-ray diffraction study. 1. The anhydrous, high-temperature polymorph
Guizard, C., Chanzy, H. and Sarko, A., Macromolecules 1984, 17, 100-107

 

 

Download Structure

Unit          dextran-highT-anhyd_expanded

 

 

 

 

 
   
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