Crystal transition of paramylon with dehydration and hydration

Novel Structural Features in Candida albicans Hyphal Glucan Provide a Basis for Differential Innate Immune Recognition of Hyphae Versus Yeast

“…Paramylon forms a structure where the longest repeat period is 13.6 Å (48,56,57). The most recent report confirms a hexagonal structure with a ϭ 15.547 Å and c ϭ 18.587 Å for never dried and a ϭ 14.543 Å and c ϭ 5.853 Å for dried paramylon (57). Curdlan was isolated in three forms (47), two being identical to the never dried and dried forms of paramylon (48,59).…”

“…These forms are monoclinic with the longest repeat distance of ϳ10 Å (54,55). Two linear natural product (133)-␤ glucans, paramylon (Euglena species) and curdlan (Alcaligenes bacteria), also exhibit a number of crystalline forms, but the polymeric molecules form helices (48,56,57). Paramylon forms a structure where the longest repeat period is 13.6 Å (48,56,57).…”

“…Two linear natural product (133)-␤ glucans, paramylon (Euglena species) and curdlan (Alcaligenes bacteria), also exhibit a number of crystalline forms, but the polymeric molecules form helices (48,56,57). Paramylon forms a structure where the longest repeat period is 13.6 Å (48,56,57). The most recent report confirms a hexagonal structure with a ϭ 15.547 Å and c ϭ 18.587 Å for never dried and a ϭ 14.543 Å and c ϭ 5.853 Å for dried paramylon (57).…”

Crystal transition from Na–cellulose IV to cellulose II monitored using synchrotron X-ray diffraction

“…In our previous studies on other polysaccharides, such as ␤-chitin and paramylon, the transition point from the hydrate to anhydrous forms was clearly observed during the drying process at RH = 30-40% for both polysaccharides Kobayashi, Kimura, Togawa, Wada, & Kuga, 2010). In contrast, there is no such clear transition point in Fig.…”

Profiling Planktonic Biomass Using Element-Specific, Multicomponent Nuclear Magnetic Resonance Spectroscopy

“…To our knowledge, this is the first report that assigns 13 C chemical shifts for each glucopyranosyl residue, whereas magnetically nonequivalent, glucoside residues in dehydrated paramylon have been previously reported. 50,51 As shown here, 3D-DARR spectra provided structural information on polysaccharides as well as proteins and lipids (Figures 2d and 2e) in the cellular multicomponent environment.…”