PolySacDb

A Database of Polysachharide 3D structures

 
By A. Sarkar & S. Pérez
 
 
 

Polysaccharides For Experts

Poly-β-D-Mannuronic Acid (Alginic acid)

 

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Diffraction Diagram

 

Fig.1 X-ray fiber diffraction photograph obtained from polymannuronic acid. The pattern indexes on an orthorhombic unit cell with a layer line spacing of 10.4 Å. The fiber axis is vertical.

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Structures are best viewed using PyMol & Sybyl

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  Poly-β-D-Mannuronic Acid (Alginic acid)

Linkage :       beta 1-4     

 

Space Group :       orthorhombic P212121

 

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) =   7.60

b (Å) =   10.40

c (Å) =   8.60

 

 

Helix Type :      

-

 

Method(s) Used For Structure Determination :      

X-ray diffraction and polarized infrared studies

 

Link to the Abstract :      
 
http://www.ncbi.nlm.nih.gov/pubmed/4733712

 

Reference :      

Structural Components of Alginic Acid. I. The Crystalline Structure of Poly-?-D-Mannuronic Acid. Results of X-Ray Diffraction and Polarized Infrared Studies
Atkins, E.D.T., Nieduszynski, I.A., Mackie, W., Parker, K.D. and Smolko, E.E., Biopolymers, 1973, 12(8), Pages 1865 - 1878

 

 

Download Structure

Unit          mannuronic-acid-32-Ca_expanded

 

 

 

 

 
   
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