Characterization of the highly branched glycogen from the thermoacidophilic red microalga Galdieria sulphuraria and comparison with other glycogens.
The thermoacidophilic red microalga Galdieria sulphuraria synthesizes glycogen when growing under heterotrophic conditions. Structural characterization revealed that G. sulphuraria glycogen is the most highly branched glycogen described to date, with 18% of α-(1→6) linkages. Moreover, it differs from other glycogens because it is composed of short chains only and has a substantially smaller molecular weight and particle size. The physiological role of this highly branched glycogen in G. sulphuraria is discussed.
Aquatic Biotechnology and Bioproduct Engineering, Engineering and Technology Institute Groningen (ENTEG), University of Groningen, The Netherlands.
Marta
M
Martinez-Garcia
Electron Microscopy, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, The Netherlands.
Marc C A
MC
Stuart
Aquatic Biotechnology and Bioproduct Engineering, Engineering and Technology Institute Groningen (ENTEG), University of Groningen, The Netherlands. Electronic address: m.j.e.c.van.der.maarel@rug.nl.
Marc J E C
MJ
van der Maarel
D000143:Acids / Q000737:chemistry*; D020285:Cryoelectron Microscopy; D006003:Glycogen / Q000032:analysis* / Q000737:chemistry* / Q000648:ultrastructure; D058086:Microalgae / Q000378:metabolism*; D008970:Molecular Weight; D066244:Proton Magnetic Resonance Spectroscopy; D000461:Rhodophyta / Q000378:metabolism*; D013696:Temperature
D000143:Acids; D006003:Glycogen
Branching; Galdieria sulphuraria; Glucan; Glycogen; Red algae