Letter abstract
Nature Cell Biology 7, 1224 - 1231 (2005)
Published online: 13 November 2005 | doi:10.1038/ncb1330
There is an Erratum (December 2005) associated with this Letter.
Evidence for a protein transported through the secretory pathway en route to the higher plant chloroplast
Arsenio Villarejo1, Stefan Burén1, Susanne Larsson1, Annabelle Déjardin1,2, Magnus Monné3, Charlotta Rudhe3, Jan Karlsson1, Stefan Jansson1, Patrice Lerouge4, Norbert Rolland5, Gunnar von Heijne3, Markus Grebe6, Laszlo Bako1,7 & Göran Samuelsson1
In contrast to animal and fungal cells, green plant cells contain one or multiple chloroplasts, the organelle(s) in which photosynthetic reactions take place. Chloroplasts are believed to have originated from an endosymbiotic event and contain DNA that codes for some of their proteins. Most chloroplast proteins are encoded by the nuclear genome and imported with the help of sorting signals that are intrinsic parts of the polypeptides. Here, we show that a chloroplast-located protein in higher plants takes an alternative route through the secretory pathway, and becomes N-glycosylated before entering the chloroplast.
- Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, S-90187 Umeå, Sweden.
- Present address: Unité d'Amélioration, de Génétique et de Physiologie Forestières, INRA, BP 20619 Ardon, F-45166 Olivet Cedex, France.
- Department of Biochemistry and Biophysics, Arrhenius Laboratory, Stockholm University, S-10691 Stockholm, Sweden.
- UMR-CNRS 6037, IFRMP 23, UFR des Sciences, University of Rouen, F-76821 Mont Saint Aignan, France.
- Laboratoire de Physiologie Cellulaire Végétale, UMR-5168 CNRS/INRA/Université Joseph Fourier/CEA Grenoble, 17 rue des Martyrs, F-38054 Grenoble cedex 9, France.
- Umeå Plant Science Centre, Department of Forest Genetics and Plant Physiology, Swedish University for Agricultural Sciences, S-90183 Umeå, Sweden.
- Institute of Plant Biology, Biological Research Center of the Hungarian Academy of Sciences, H-6701 Szeged, Hungary.
Correspondence to: Göran Samuelsson1 e-mail: goran.samuelsson@plantphys.umu.se
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