PolySacDb

A Database of Polysachharide 3D structures

 
By A. Sarkar & S. Pérez
 
 
 

Polysaccharides For Experts

Agarose (double)

 

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Diffraction Diagram

     

Fig.1 Fibre diffraction patterns of

(a)An oriented fibre of Agarose sulphate. (Exposure time: 5 hours, Relative Humidity : 75%).

(b)An oriented fibre of O-hydroxyethylagarose (Exposure time: 18.5 hours, Relative Humidity : 66%).

(c)An oriented film prepared from a dimethyl sulphoxide solution of agarose (Exposure time: 6.5 hours, Relative Humidity : 66%).

*Permission Pending for Diffraction Diagrams

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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)

 

  Agarose (double)

Linkage :       alpha 1-4      alpha 1-3

 

Space Group :       -

 

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)

c (Å) =   9.50

 

 

Helix Type :      

Each chain in the double helix forms a lefthanded 3-fold helix

 

Method(s) Used For Structure Determination :      

X-ray diffraction, optical rotation and computerised molecular modelling

 

Link to the Abstract :      
 
http://www.ncbi.nlm.nih.gov/pubmed/4453017

 

Reference :      

The agarose double helix and its function in agarose gel structure
Arnott, S., Fulmer, A., Scott, W.E., Dea, I.C.M., Moorhouse, R. and Rees, D.A., 1974, J. Mol. Biol., 90(2), 269-284

 

 

Download Structure

          agarose-double_1AGA_expanded

 

 

 

 

 
   
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