PolySacDb

Cellulose 1α

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Fig.1 (TOP) Synchrotron X-ray diffraction data collected on an online MAR image plate from fibers of Glaucocystis cellulose IR on station ID2A at the ESRF, Grenoble, France. (BOTTOM) A 3D fit of the Bragg intensities, done using custom-written software that takes into account fiber texture. The images have been remapped into cylindrical reciprocal space with the fiber axis vertical.

*Permission Pending for Diffraction Diagrams

Diffraction Diagram

Fig.2 (TOP) Neutron fiber diffraction patterns collected from two fibers of Glaucocystis cellulose IR, one hydrogenated (LEFT-HAND QUADRANT) and the other deuterated (RIGHT-HAND QUADRANT). The BOTTOM QUADRANTS show 3D fits of the Bragg intensities, done using custom-written software that takes into account fiber texture. The images have been remapped into cylindrical reciprocal space with the fiber axis vertical.

*Permission Pending for Diffraction Diagrams

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Cellulose 1α

Linkage : beta 1-4

Space Group : triclinic P1

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) = 6.72 - b (Å) = 5.96 - c (Å) = 10.40 - γ (°) = 80.37 - β (°) = 114.80 - α (°) = 118.08

Helix Type : parallel-up chain arrangement, one-chain

Method(s) Used For Structure Determination : X-ray and neutron fiber diffraction

Link to the Abstract : http://www.ncbi.nlm.nih.gov/pubmed/14624578

Reference :

Crystal Structure and Hydrogen Bonding System in Cellulose Ia from Synchrotron X-ray and Neutron Fiber Diffraction
Yoshiharu Nishiyama, Junji Sugiyama, Henri Chanzy, and, Paul Langan, Journal of the American Chemical Society 2003, 125(47), 14300-14306

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Unit cellulose-1-alpha_expanded

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Cellulose 1α