PolySacDb

Cellulose 1β

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Fig.1 (TOP) Synchrotron X-ray diffraction data collected on an online MAR image plate from fibers of Halocynthia cellulose Iα 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 Neutron fiber diffraction patterns collected from two fibers of Halocynthia cellulose Iβ , one hydrogenated (TOP LEFT-HAND QUADRANT) and the other deuterated (TOP 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 1β

Linkage : beta 1-4

Space Group : monoclinic 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) = 7.78 - b (Å) = 8.20 - c (Å) = 10.38 - γ (°) = 96.55 - β (°) = 90.00 - α (°) = 90.00

Helix Type : parallel-up chain arrangement, two parallel chains

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

Link to the Abstract : http://www.ncbi.nlm.nih.gov/pubmed/12149011

Reference :

Crystal Structure and Hydrogen-Bonding System in Cellulose Ib from Synchrotron X-ray and Neutron Fiber Diffraction
Yoshiharu Nishiyama, Paul Langan, and Henri Chanzy, Journal of the American Chemical Society 2002, 124(31), 9074-9082

Download Structure

Unit cellulose-1-beta-cornerchain_unit

cellulose-1-beta-2chains_expanded

Polysaccharides For Experts

Cellulose 1β