PolySacDb

A Database of Polysachharide 3D structures

 
By A. Sarkar & S. Pérez
 
 
 

Polysaccharides For Experts

Glucan triacetate (1→3-α-glucan triacetate)

 

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Diffraction Diagram

 

Fig.1 The X-ray fibre pattern of (1→3)-α-D-glucan triacetate (GTA I). The fibre axis is vertical.

*Permission Pending for Diffraction Diagrams

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  Glucan triacetate (1→3-α-glucan triacetate)

Linkage :       alpha 1-3     

 

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) =   30.17

b (Å) =   17.42

c (Å) =   12.11

 

 

Helix Type :      

left-handed, three-fold helix. Six molecular chains pass through the unit cell with alternating polarity and with three independent chains comprising the asymmetric unit. The chain axes are located in a hexagonal packing arrangement.

 

Method(s) Used For Structure Determination :      

X-ray diffraction and stereochemical model refinement

 

Link to the Abstract :      
 
http://www.ncbi.nlm.nih.gov/pubmed/1515405

 

Reference :      

Molecular and crystal structure of (1 → 3)-?-d-glucan triacetate
Toshifumi Yui and Anatole Sarko , International Journal of Biological Macromolecules 1992, 14(2), 87-96

 

 

Download Structure

Unit          glucan-triacetate_expanded

 

 

 

 

 
   
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