Taxonomic group: protista / Euglenozoa
(Phylum: Euglenozoa)
Publication DOI: 10.1016/j.polymer.2023.125984Journal NLM ID: 0357015Publisher: Oxford: Elsevier
Correspondence: M. Shibakami <moto.shibakami
aist.go.jp>
Institutions: Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Central 6th, 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8566, Japan
Paramylon is a storage polysaccharide produced by Euglena glacilis. Paramylon nanofibers form spontaneously through the self-assembly of single-strand paramylon. However, paramylon nanofibers are well-dispersed only in strongly alkaline solutions. Therefore, a method of fabricating a novel fiber network using paramylon was developed, without requiring the use of additives to prevent aggregation. Paramylon was dissolved in dimethyl sulfoxide at a high concentration, and this thick, viscous solution was added dropwise to ethanol. The resulting spheres (paramylon beads) were dispersed in water and homogenized. The aqueous dispersion contained a web-like structure comprising submicron fibers with widths of ~500 nm (paramylon web). Gradual removal of water from the aqueous dispersions produced centimeter-sized translucent paper-like films (paramylon papers). The translucency suggested that the submicron fibers did not excessively aggregate but still maintained small interstices within the paper owing to the rigid web-like structure.
paramylon, Euglena, submicron fiber, fiber network
Structure type: homopolymer
Location inside paper: graphical abstract, Fig. 8(a)
Trivial name: glucan, β-1,3-glucan, curdlan, curdlan-type polysaccharide 13140, paramylon, curdlan, laminarin, β-glucan, curdlan, β-(1,3)-glucan, β-(1,3)-glucan, curdlan, curdlan, β-1,3-glucan, paramylon, reserve polysaccharide, b-glucan, β-1,3-D-glucan, laminaran, botryosphaeran, laminaran type β-D-glucan, latiglucan I, pachymaran, Curdlan, zymosan A, β-glucan, curdlan, laminarin, zymosan, zymosan, glucan particles, zymosan, β-(1-3)-glucan, β-(1,3)-glucan, β-(1,3)glucan, pachymaran, D-glucan (DPn)540, pachyman, laminaran, curdlan, zymosan, zymosan, β-(1,3)-glucan, zymosan A, zymosan, β-1,3-glucan, curdlan, β-1,3-glucan, curdlan, β-1,3-glucan, curdlan, pachyman, β-(1,3)-glucan, curdlan, callose, a water-insoluble β-(1→3)-glucan, fermentum β-polysaccharide, water-insoluble glucan, callose, laminarin, alkali-soluble β-glucan (PeA3), alkali-soluble polysaccharide (PCAP)
Compound class: EPS, O-polysaccharide, cell wall polysaccharide, lipophosphoglycan, glycoprotein, LPG, glucan, cell wall glucan, polysaccharide, glycoside, β-glucan, β-1, 3-glucan
Contained glycoepitopes: IEDB_1397514,IEDB_142488,IEDB_146664,IEDB_153543,IEDB_158555,IEDB_161166,IEDB_558869,IEDB_857743,IEDB_983931,SB_192
Methods: 13C NMR, 1H NMR, FTIR, SEM, TEM, XRD, thermogravimetric analysis, preparations of paramylon beads and paper
NCBI Taxonomy refs (TaxIDs): 3039Reference(s) to other database(s): GTC:G51056AN, GlycomeDB:
157, CCSD:
50049, CBank-STR:4225, CA-RN: 51052-65-4, GenDB:FJ3380871.1
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There is only one chemically distinct structure:
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