PolySacDb

A Database of Polysachharide 3D structures

 
By A. Sarkar & S. Pérez
 
 
 

Polysaccharides For Experts

Mannan I (electron diffraction)

 

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Diffraction Diagram

 

Fig.1 Electron diffraction patterns obtained from mannan I crystals rotated by ±13°, ±19°, ±35°, and ±54° around a*, in comparison with an untilted diagram (tilt 0°) . For each setting the same crystal was used for the positive and negative orientations and the resulting diagrams were identical in each case. Different crystals were used for each setting.

*Permission Pending for Diffraction Diagrams

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  Mannan I (electron diffraction)

Linkage :       beta 1-4     

 

Space Group :       orthorhombic 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) =   8.92

b (Å) =   7.21

c (Å) =   10.27

 

 

Helix Type :      

highly extended 2-fold helices

 

Method(s) Used For Structure Determination :      

electron diffraction and stereochemical restraints

 

Link to the Abstract :      
 
http://pubs.acs.org/doi/abs/10.1021/ma00176a014

 

Reference :      

An Electron Diffraction Study of Mannan I. Crystal and Molecular Structure
Chanzy, H., Pérez, S., Miller, D. P., Paradossi, G. and Winter, W. T., Macromolecules 1987, 20, 2407-2413

 

 

Download Structure

Unit          mannan-I_expanded

 

 

 

 

 
   
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