PolySacDb

A Database of Polysachharide 3D structures

 
By A. Sarkar & S. Pérez
 
 
 

Polysaccharides For Experts

Nigeran

 

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Diffraction Diagram

 

Fig.1 Fiber diffraction pattern of anhydrous nigeran.

 

Fig.2 Electron diffraction pattern of single crystal of anhydrous nigeran.

*Permission Pending for Diffraction Diagrams

(Please right-click & view the image if it appears distorted here)

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Structures are best viewed using PyMol & Sybyl

(Please download the structure and view in a stand-alone viewer if the structure appears distorted in Jmol)

 

  Nigeran

Linkage :       alpha 1-4      alpha 1-3

 

Space Group :       P212121

 

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) =   17.76

b (Å) =   6.00

c (Å) =   14.62

 

γ (°) =   90.00

 

Helix Type :      

2-fold helix

 

Method(s) Used For Structure Determination :      

X-ray diffraction, electron diffraction and packing analysis

 

Link to the Abstract :      
 
http://www.ncbi.nlm.nih.gov/pubmed/448733

 

Reference :      

Dehydration of nigeran crystals: Crystal structure and morphological aspects
Pérez , S., Roux, M., Revol, J.F. and Marchessault, R.H., J. Mol. Biol. 1979, 29, 113 -133

 

 

Download Structure

Unit          nigeran_one-chain          nigeran_xyz-expanded

 

 

 

 

 
   
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