Literature DB >> 11710096

Formation and structure of artificial cellulose spherulites via enzymatic polymerization.

S Kobayashi1, L J Hobson, J Sakamoto, S Kimura, J Sugiyama, T Imai, T Itoh.   

Abstract

The in-depth structural analysis of spherulites of artificial cellulose, formed by the enzymatic polymerization of cellobiosyl fluoride, is reported. Both positive- and negative-type spherulites were observed by polarization optical microscopy. Scanning electron microscopy revealed that the negative spherulites have a three-dimensional round shape, where platelike single crystals of the artificial cellulose originate radially from the center. Transmission electron microscopy confirmed that the cellulose chains orient vertically in the platelike crystals, explaining the observation of negative-type spherulites by polarization optical microscopy. Cellulose spherulites can be formed easily via the enzymatic polymerization process, and the occurrence of both positive- and negative-type spherulites is proposed, due to two independent polymerization mechanisms.

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Year:  2000        PMID： 11710096     DOI： 10.1021/bm990010w

Source DB:  PubMed          Journal:  Biomacromolecules        ISSN： 1525-7797            Impact factor:   6.988


  9 in total

1.  The mechanism of amyloid spherulite formation by bovine insulin.

Authors:  M R H Krebs; E H C Bromley; S S Rogers; A M Donald
Journal:  Biophys J       Date:  2004-12-13       Impact factor: 4.033

2.  Bottom-Up Approach to Understand Chirality Transfer across Scales in Cellulose Assemblies.

Authors:  Giulio Fittolani; Denisa Vargová; Peter H Seeberger; Yu Ogawa; Martina Delbianco
Journal:  J Am Chem Soc       Date:  2022-06-29       Impact factor: 16.383

3.  The formation of spherulites by amyloid fibrils of bovine insulin.

Authors:  Mark R H Krebs; Cait E Macphee; Aline F Miller; Iain E Dunlop; Christopher M Dobson; Athene M Donald
Journal:  Proc Natl Acad Sci U S A       Date:  2004-09-20       Impact factor: 11.205

4.  In vitro synthesis of a crystalline (1-->3,1-->4)-beta-D-glucan by a mutated (1-->3,1-->4)-beta-D-glucanase from Bacillus.

Authors:  Magda Faijes; Tomoya Imai; Vincent Bulone; Antoni Planas
Journal:  Biochem J       Date:  2004-06-15       Impact factor: 3.857

5.  Enzymatic synthesis of cellulose in space: gravity is a crucial factor for building cellulose II gel structure.

Authors:  Tomohiro Kuga; Naoki Sunagawa; Kiyohiko Igarashi
Journal:  Cellulose (Lond)       Date:  2022-01-29       Impact factor: 6.123

Review 6.  Recent Advances in Electron Microscopy of Carbohydrate Nanoparticles.

Authors:  Yu Ogawa; Jean-Luc Putaux
Journal:  Front Chem       Date:  2022-02-15       Impact factor: 5.221

7.  Thermo-Reversible Cellulose Micro Phase-Separation in Mixtures of Methyltributylphosphonium Acetate and γ-Valerolactone or DMSO.

Authors:  Ashley J Holding; Jingwen Xia; Michael Hummel; Harry Zwiers; Matti Leskinen; Daniel Rico Del Cerro; Sami Hietala; Martin Nieger; Marianna Kemell; Jussi K J Helminen; Vladimir Aseyev; Heikki Tenhu; Ilkka Kilpeläinen; Alistair W T King
Journal:  Chemphyschem       Date:  2022-02-25       Impact factor: 3.520

Review 8.  New developments of polysaccharide synthesis via enzymatic polymerization.

Authors:  Shiro Kobayashi
Journal:  Proc Jpn Acad Ser B Phys Biol Sci       Date:  2007-12       Impact factor: 3.493

9.  Surface Interactions between Bacterial Nanocellulose and B-Complex Vitamins.

Authors:  Diego Mauricio Sánchez-Osorno; Diego Gomez-Maldonado; Cristina Castro; María Soledad Peresin
Journal:  Molecules       Date:  2020-09-04       Impact factor: 4.411
  9 in total

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