FEBS Letters
Volume 582, Issue 20 , Pages 3025-3028, 3 September 2008

Only plant-type (GLYK) glycerate kinases produce d-glycerate 3-phosphate

Edited by Ulf-Ingo Flügge

  • Oliver Bartsch
    • ,
  • Martin Hagemann
    • ,
  • Hermann Bauwe

      Affiliations

    • Corresponding Author InformationCorresponding author. Present address: Universität Rostock, Institut für Biowissenschaften, Abteilung Pflanzenphysiologie, Albert-Einstein-Straße 3, D-18051 Rostock, Germany. Fax: +49 (0) 3814986112.

Department of Plant Physiology, University of Rostock, Albert-Einstein-Straße 3, D-18059 Rostock, Germany

Received 8 July 2008; received in revised form 23 July 2008; accepted 23 July 2008. published online 01 August 2008.

Abstract 

d-Glycerate kinases (GK) occur in three phylogenetically distinct classes. Class II GKs produce glycerate 2-phosphate, while both class I GK and class III GK (GLYK) are thought to produce glycerate 3-phosphate. We report on the identification of a bacterial-type class I GK in the unicellular cyanobacterium Synechocystis sp. strain PCC 6803 and of a plant-type GLYK in the filamentous cyanobacterium Nostoc sp. strain PCC 7120. The comparison with other prokaryotic and eukaryotic GKs of both classes shows that glycerate 3-phosphate is produced only by the GLYKs, but, in contrast to current thinking, not by any of the examined class I enzymes.

Abbreviations: 2PGA, glycerate 2-phosphate, 3PGA, glycerate 3-phosphate, GK, glycerate kinase, GLYK, class III GK

Keywords: Glycerate kinase, Bacteria, Cyanobacteria, Fungi, Plants

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PII: S0014-5793(08)00638-8

doi:10.1016/j.febslet.2008.07.038

FEBS Letters
Volume 582, Issue 20 , Pages 3025-3028, 3 September 2008

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