PolySacDb

A Database of Polysachharide 3D structures

 
By A. Sarkar & S. Pérez
 
 
 

Polysaccharides For Experts

Glucomannan

 

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Diffraction Diagram

 

Fig.1 The X-ray fiber pattern of konjac glucomannan in mannan II polymorphic form . The fiber axis is vertical.

*Permission Pending for Diffraction Diagrams

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Structures are best viewed using PyMol & Sybyl

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  Glucomannan

Linkage :       beta 1-4     

 

Space Group :       orthorhombic I222

 

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) =   9.01

b (Å) =   16.73

c (Å) =   10.40

 

γ (°) =   90.00

β (°) =   90.00

α (°) =   90.00

 

Helix Type :      

2-fold helix. The unit cell contains 4 chains with anti-parallel packing polarity and eight water molecules

 

Method(s) Used For Structure Determination :      

X-ray data and constrained linked-atom least-squares model refinement

 

Link to the Abstract :      
 
http://www.ncbi.nlm.nih.gov/pubmed/1516105

 

Reference :      

Molecular and crystal structure of konjac glucomannan in the mannan II polymorphic form
Toshifumi Yui, Kozo Ogawa and Anatole Sarko, Carbohydrate Research 1992, 229 (1), 41-55

 

 

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