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Mechanisms of UDP-glucose synthesis in plants
Umeå University, Faculty of Science and Technology, Department of Plant Physiology. Umeå University, Faculty of Science and Technology, Umeå Plant Science Centre (UPSC).ORCID iD: 0000-0001-8685-9665
Umeå University, Faculty of Science and Technology, Department of Plant Physiology. Umeå University, Faculty of Science and Technology, Umeå Plant Science Centre (UPSC).
Umeå University, Faculty of Medicine, Department of Medical Biochemistry and Biophysics.
2010 (English)In: Critical reviews in plant sciences, ISSN 0735-2689, E-ISSN 1549-7836, Vol. 29, no 4, 191-203 p.Article in journal (Refereed) Published
Abstract [en]

Substantial progress has been made in studies on enzymes synthesizing UDP-glucose (UDPG) which is essential for sucrose and cell wall biosynthesis, and in an array of other processes, e.g. glycosylation of proteins and lipids. The enzymes include UDPG pyrophosphorylase, UDP-sugar pyrophosphorylase (USPase) and sucrose synthase (SuSy). Genes coding for those proteins are under complex spatial and temporal regulation, and are frequently coexpressed. Recent evidence for regulation of some of the UDPG-synthesizing proteins by posttranslational modifications and oligomerization, together with discoveries of novel isozymes and unexpected locations within a cell (including chloroplasts and mitochondria) have made the studies exciting, but complex. The enzymes differ in specificity for sugar and nucleotide portions of their substrates/products, and may be involved in distinct metabolic pathways, but also in signaling. Homology models for USPase and SuSy structures are presented, based on recent crystallization of structurally related proteins. Future challenges in research on UDPG-producing enzymes are underlined.

Place, publisher, year, edition, pages
2010. Vol. 29, no 4, 191-203 p.
Identifiers
URN: urn:nbn:se:umu:diva-37337DOI: 10.1080/07352689.2010.483578ISI: 000279710800001OAI: oai:DiVA.org:umu-37337DiVA: diva2:359324
Available from: 2010-10-27 Created: 2010-10-27 Last updated: 2017-12-12Bibliographically approved

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Kleczkowski, Leszek AKunz, SabineWilczynska, Malgorzata
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Department of Plant PhysiologyUmeå Plant Science Centre (UPSC)Department of Medical Biochemistry and Biophysics
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CiteExportLink to record
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