1. Department of Plant Sciences Weizmann Institute of Science Rehovot 76100, Israel
2. Department of Biological Chemistry Weizmann Institute of Science and Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture Hebrew University of Jerusalem Rehovot 76100, Israel
3. Department of Biological Chemistry Weizmann Institute of Science Rehovot 76100, Israel
4. Institute of Life Sciences and Avron-Even-Ari Minerva Center for Photosynthesis Research Hebrew University of Jerusalem Jerusalem 91014, Israel
5. Electron Microscopy Unit Weizmann Institute of Science Rehovot 76100, Israel