PolySacDb

A Database of Polysachharide 3D structures

 
 
 
 

Polysaccharides For Experts

Poly-α-L-Guluronic Acid (Alginic acid)

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Diffraction Diagram

 

Fig.1 X-ray diffraction fiber photograph obtained from polyguluronic acid. The pattern indexes on an orthorhombic unit cell with the fiber axis = 8.7 ± 0.1 Å.

(a)(A) polyguluronic acid

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Diffraction Diagram

   

Fig.1 X-ray diffraction fiber photograph obtained from polyguluronic acid. The pattern indexes on an orthorhombic unit cell with the fiber axis = 8.7 ± 0.1 Å.

(a)(A) polyguluronic acid

(b)(B) polyguluronate-K+

*Permission Pending for Diffraction Diagrams

Diffraction Diagram

     

Fig.1 X-ray diffraction fiber photograph obtained from polyguluronic acid. The pattern indexes on an orthorhombic unit cell with the fiber axis = 8.7 ± 0.1 Å.

(a)(A) polyguluronic acid

(b)(B) polyguluronate-K+

(c)(C) polyguluronate-NH4+

*Permission Pending for Diffraction Diagrams

Diffraction Diagram

       

Fig.1 X-ray diffraction fiber photograph obtained from polyguluronic acid. The pattern indexes on an orthorhombic unit cell with the fiber axis = 8.7 ± 0.1 Å.

(a)(A) polyguluronic acid

(b)(B) polyguluronate-K+

(c)(C) polyguluronate-NH4+

(d)(D) polyguluronate-Li+

*Permission Pending for Diffraction Diagrams

Diffraction Diagram

         

Fig.1 X-ray diffraction fiber photograph obtained from polyguluronic acid. The pattern indexes on an orthorhombic unit cell with the fiber axis = 8.7 ± 0.1 Å.

(a)(A) polyguluronic acid

(b)(B) polyguluronate-K+

(c)(C) polyguluronate-NH4+

(d)(D) polyguluronate-Li+

(e)(E) polyguluronate-Ca

*Permission Pending for Diffraction Diagrams

Diffraction Diagram

           

Fig.1 X-ray diffraction fiber photograph obtained from polyguluronic acid. The pattern indexes on an orthorhombic unit cell with the fiber axis = 8.7 ± 0.1 Å.

(a)(A) polyguluronic acid

(b)(B) polyguluronate-K+

(c)(C) polyguluronate-NH4+

(d)(D) polyguluronate-Li+

(e)(E) polyguluronate-Ca

(f)(F) polyguluronate-Mg2+

*Permission Pending for Diffraction Diagrams

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  Poly-α-L-Guluronic Acid (Alginic acid)

Linkage : alpha 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) = 8.60 - b (Å) = 8.70 - c (Å) = 10.70

Helix Type : 2-fold helix

Method(s) Used For Structure Determination : X-ray diffraction and polarized infrared studies

Link to the Abstract : http://www.ncbi.nlm.nih.gov/pubmed/4733713

Reference :

Structural Components of Alginic Acid. II. The Crystalline Structure of Poly-?-L-Guluronic 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 1879 - 1887

 

Download Structure

Unit          polyguluronic-acid-21_expanded

          polyguluronic-acid-32_expanded

 

 

 

 

 
   
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