PolySacDb

A Database of Polysachharide 3D structures

 
By A. Sarkar & S. Pérez
 
 
 

Polysaccharides For Experts

Capsular Polysaccharide (Rhizobium trifolii)

 

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Diffraction Diagram

 

Fig.1 X-ray diffraction pattern from a well-oriented fiber of the CPS. The intensities are almost continuously distributed on the layer lines. The strong meridional intensity on the second layer line indicates 2-fold helix symmetry.

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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)

 

  Capsular Polysaccharide (Rhizobium trifolii)

Linkage :       alpha 1-2,alpha 1-3      beta 1-4, beta 1-6

 

Space Group :       monoclinic or trigonal 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)

 

 

Helix Type :      

2-fold single helix

 

Method(s) Used For Structure Determination :      

X-ray diffraction and computer-aided model building

 

Link to the Abstract :      
 
http://www.ncbi.nlm.nih.gov/pubmed/1394313

 

Reference :      

The ?pseudo double-helical? structure of the gel-forming capsular polysaccharide from Rhizobium trifolii
Eun J. Lee & Rengaswami Chandrasekaran, 1992, Carbohydrate Research, 231, 171-183

 

 

Download Structure

Unit          Rhizobium-trifolii_expanded

 

 

 

 

 
   
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