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Published on December 9, 2009; 10.1104/pp.109.150326

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Received November 2, 2009
Accepted November 30, 2009

Phosphoenolpyruvate carboxylase (PEPC) from C4 leaves is selectively targeted for inhibition by anionic phospholipids

Jose A. Monreal , Fionn McLoughlin , Cristina Echevarria , Sofia Garcia-Maurino , and Christa Testerink *

Departamento de Biologia Vegetal y Ecologia, Facultad de Biologia, Universidad de Sevilla, Avenida Reina Mercedes nº 6, 41012 Seville, Spain; Section of Plant Physiology, Swammerdam Institute for Life Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, the Netherlands

* Corresponding author; email: c.s.testerink{at}uva.nl.

Phosphoenolpyruvate carboxylase (PEPC; E.C. 4.1.1.31) is an enzyme playing a crucial role in photosynthesis of C4 plants. Here, we identify anionic phospholipids as novel regulators that inhibit C4-PEPC activity and provide evidence that the enzyme partially localizes to membranes.






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