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+
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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+
(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
polysacdb/poly-alpha-L-guluronic-acid/polyguluronic-acid-21_expanded.pdb
polyguluronic-acid-32_expandedpolysacdb/poly-alpha-L-guluronic-acid/polyguluronic-acid-32_expanded.pdb