Pathway of Cytosolic Starch Synthesis in the Model Glaucophyte Cyanophora paradoxa-Reference-Cited by-同舟云学术

Pathway of Cytosolic Starch Synthesis in the Model Glaucophyte Cyanophora paradoxa

Published:2008-02 Issue:2 Volume:7 Page:247-257
ISSN:1535-9778
Container-title:Eukaryotic Cell
language:en
Short-container-title:Eukaryot Cell

Author:

Plancke Charlotte¹,Colleoni Christophe¹,Deschamps Philippe¹,Dauvillée David¹,Nakamura Yasunori²,Haebel Sophie³,Ritte Gehrardt⁴,Steup Martin⁴,Buléon Alain⁵,Putaux Jean-Luc⁶,Dupeyre Danielle⁶,d'Hulst Christophe¹,Ral Jean-Philippe¹,Löffelhardt Wolfgang⁷,Ball Steven G.¹

Affiliation:

1. Unité de Glycobiologie Structurale et Fonctionnelle, UMR8576 CNRS/USTL, Université des Sciences et Technologies de Lille, Villeneuve d'Ascq, Cedex 59655, France

2. Faculty of Bioresource Sciences, Akita Prefectural University, Shimoshinjo-Nakano, Akita 010-0195, Japan

3. Center of Mass Spectrometry of Biopolymers

4. Plant Physiology, Institute of Biochemistry and Biology, University of Potsdam, 14476 Potsdam-Golm, Germany

5. Institut National de la Recherche Agronomique, Centre de Recherches Agroalimentaires, Rue de la Géraudière, BP71627, 44316 Nantes, Cedex 03, France

6. Centre de Recherches sur les Macromolécules Végétales (CERMAV-CNRS), BP 53, F-38041 Grenoble, Cedex 9, France

7. Max F. Perutz Laboratories, University of Vienna, Department of Biochemistry, Dr. Bohrgasse 9, 1030 Vienna, Austria

Abstract

ABSTRACT The nature of the cytoplasmic pathway of starch biosynthesis was investigated in the model glaucophyte Cyanophora paradoxa . The storage polysaccharide granules are shown to be composed of both amylose and amylopectin fractions, with a chain length distribution and crystalline organization similar to those of green algae and land plant starch. A preliminary characterization of the starch pathway demonstrates that Cyanophora paradoxa contains several UDP-glucose-utilizing soluble starch synthase activities related to those of the Rhodophyceae. In addition, Cyanophora paradoxa synthesizes amylose with a granule-bound starch synthase displaying a preference for UDP-glucose. A debranching enzyme of isoamylase specificity and multiple starch phosphorylases also are evidenced in the model glaucophyte. The picture emerging from our biochemical and molecular characterizations consists of the presence of a UDP-glucose-based pathway similar to that recently proposed for the red algae, the cryptophytes, and the alveolates. The correlative presence of isoamylase and starch among photosynthetic eukaryotes is discussed.

Publisher

American Society for Microbiology

Subject

Molecular Biology,General Medicine,Microbiology

Link

https://journals.asm.org/doi/pdf/10.1128/EC.00373-07

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