PolySacDb

A Database of Polysachharide 3D structures

 
By A. Sarkar & S. Pérez
 
 
 

Polysaccharides For Experts

Dextran (low T polymorph)

 

.........................................................................................

Diffraction Diagram

 

Fig.1 X-ray diffraction diagram of dextran hydrate (flat film, at 98% relative humidity).

*Permission Pending for Diffraction Diagrams

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

.........................................................................................

 

Right Clicking on the black box provides more options



      
     

Sweet are the fruits of patience.

Please wait for your sugar to appear ...

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)

 

  Dextran (low 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) =   25.71

b (Å) =   10.21

c (Å) =   7.76

 

β (°) =   91.30

 

Helix Type :      

sheets that are separated by water molecules

 

Method(s) Used For Structure Determination :      

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

 

Link to the Abstract :      
 
http://www.ncbi.nlm.nih.gov/pubmed/2410620

 

Reference :      

The Molecular and Crystal Structure of Dextrans : A Combined Electron and X-ray Diffraction Study II . A Low Temperature, Hydrated Polymorph
Guizard, H. Chanzy, H. and Sarko, A., J. Mol. Biol. 1985, 183, 378-408

 

 

Download Structure

Unit          dextran-lowT-hyd_expanded

 

 

 

 

 
   
HTML Hit CountersVisits    
CERMAV ©