PolySacDb

A Database of Polysachharide 3D structures

 
By A. Sarkar & S. Pérez
 
 
 

Polysaccharides For Experts

Cellulose II

 

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Diffraction Diagram

 

Fig.1 LEFT-HAND SIDE : Synchrotron X-ray diffraction data collected on an online MAR image plate from mercerized ramie fibers on station ID13 at the ESRF, Grenoble, France. RIGHT-HAND SIDE : A 2D fit of the background and Bragg intensities using program LSQINT, part of the BBSRC-funded CCP13 project, Daresbury, U.K. The images have been remapped into cylindrical reciprocal space with the fiber axis vertical and reproduced at low display thresholds (TOP) and high display thresholds (BOTTOM) so that the full dynamic range of reflections can be seen.

*Permission Pending for Diffraction Diagrams

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

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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)

 

  Cellulose II

Linkage :       beta 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) =   8.10

b (Å) =   9.03

c (Å) =   10.31

 

γ (°) =   117.10

β (°) =   90.00

α (°) =   90.00

 

Helix Type :      

antiparallel chains

 

Method(s) Used For Structure Determination :      

X-ray diffraction

 

Link to the Abstract :      
 
http://www.ncbi.nlm.nih.gov/pubmed/11749200

 

Reference :      

X-ray Structure of Mercerized Cellulose II at 1 ? Resolution
Paul Langan, Yoshiharu Nishiyama, and, Henri Chanzy, Biomacromolecules 2001, 2(2), 410-416

 

 

Download Structure

Unit          cellulose-II-cornerchain_unit          cellulose-II-2chains-together_expanded

 

 

 

 

 
   
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