Plant and Cell Physiology Advance Access first published online on November 2, 2007
This version published online on November 5, 2007
Plant and Cell Physiology, doi:10.1093/pcp/pcm150
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
A cell-free translation and proteoliposome reconstitution system for functional analysis of plant solute transporters
1Cell-Free Science and Technology Research Center, and The Venture Business Laboratory, Ehime University, Matsuyama 790-8577, Japan
2Department of Applied Chemistry, Faculty of Engineering, Ehime University, Matsuyama 790-8577, Japan
3Institute for Plant Biochemistry, Heinrich-Heine-University, Geb. 26.03.01, Universitätsstraße 1, D-40225 Düsseldorf, Germany
Corresponding author: Yuzuru Tozawa, Division of Biomolecular Engineering, Cell-Free Science and Technology Research Center, Ehime University, 3 Bunkyo-cho, Matsuyama, Ehime 790-8577, Japan. Tel.: +81-89-927-8274. Fax: +81-89-927-8276. E-mail: tozaway{at}ccr.ehime-u.ac.jp
| Abstract |
|---|
We describe here a novel proteoliposome reconstitution system for functional analysis of plant membrane transporters that is based on a modified wheat germ cell-free translation system. We established optimized conditions for the reconstitution system with Arabidopsis thaliana phosphoenolpyruvate/phosphate translocator 1 (AtPPT1) as a model transporter. A high activity of AtPPT1 was achieved by synthesis of the protein in the presence of both a detergent such as Brij35 and liposomes. We also determined the substrate specificities of three putative rice PPT homologs with this system. The cell-free proteoliposome reconstitution system provides a valuable tool for functional analysis of transporter proteins.
Keywords: cell-free translation system - phosphoenolpyruvate - proteoliposome - transporter - wheat germ
(Received September 26, 2007; Accepted October 29, 2007)
![]()
CiteULike
Connotea
Del.icio.us What's this?