A Database of Polysachharide 3D structures
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Diffraction Diagram
Fig.1 Fiber diffraction pattern of neutral sodium pectate.
*Permission Pending for Diffraction Diagrams
Pectic acid
Linkage : alpha 1-4    
Space Group : orthogonal 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) = 8.40 - b (Å) = 14.30 - c (Å) = 13.40
Helix Type : corrugated sheets in which alternate molecules have opposite sense
Method(s) Used For Structure Determination : X-ray diffraction
Link to the Abstract : http://www.ncbi.nlm.nih.gov/pubmed/7343679
Reference : Conformation and interactions of pectins. I. X-ray diffraction analyses of sodium pectate in neutral and acidified forms M. D. Walkinshaw and Struther Arnott, J Mol Biol. 1981, 153(4):1055-73
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Unit pectic-acid_expanded