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| Content Provider | Royal Society of Chemistry (RSC) |
|---|---|
| Author | Giustini, Cécile Ferro, Myriam Curien, Gilles Salvi, Daniel Baudet, Mathieu Seigneurin-Berny, Daphné Dell'Aglio, Elisa Delpierre, Faustine Moyet, Lucas Rolland, Norbert Brugière, Sabine Matringe, Michel |
| Copyright Year | 2013 |
| Abstract | Ca2+/Calmodulin (CaM)-dependent signaling pathways play a major role in the modulation of cell responses in eukaryotes. In the chloroplast, few proteins such as the NAD+ kinase 2 have been previously shown to interact with CaM, but a general picture of the role of Ca2+/CaM signaling in this organelle is still lacking. Using CaM-affinity chromatography and mass spectrometry, we identified 210 candidate CaM-binding proteins from different Arabidopsis and spinach chloroplast sub-fractions. A subset of these proteins was validated by an optimized in vitro CaM-binding assay. In addition, we designed two fluorescence anisotropy assays to quantitatively characterize the binding parameters and applied those assays to NAD+ kinase 2 and selected candidate proteins. On the basis of our results, there might be many more plastidial CaM-binding proteins than previously estimated. In addition, we showed that an array of complementary biochemical techniques is necessary in order to characterize the mode of interaction of candidate proteins with CaM. |
| Starting Page | 1234 |
| Ending Page | 1248 |
| Page Count | 15 |
| File Format | HTM / HTML PDF |
| ISSN | 1742206X |
| Volume Number | 9 |
| Issue Number | 6 |
| Journal | Molecular BioSystems |
| DOI | 10.1039/c3mb00004d |
| Language | English |
| Publisher | Royal Society of Chemistry |
| Access Restriction | Open |
| Subject Keyword | Arabidopsis thaliana Anisotropy Gene regulatory network Organelle Fluorescence microscope Spinach Mass spectrometry Calmodulin Chloroplast Chromatography |
| Content Type | Text |
| Resource Type | Article |
| Subject | Molecular Biology Biotechnology |
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