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PMID:16098971
| Citation |
Ihalainen, JA, Klimmek, F, Ganeteg, U, van Stokkum, IH, van Grondelle, R, Jansson, S and Dekker, JP (2005) Excitation energy trapping in photosystem I complexes depleted in Lhca1 and Lhca4. FEBS Lett. 579:4787-91 |
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| Abstract |
We report a time-resolved fluorescence spectroscopy characterization of photosystem I (PSI) particles prepared from Arabidopsis lines with knock-out mutations against the peripheral antenna proteins of Lhca1 or Lhca4. The first mutant retains Lhca2 and Lhca3 while the second retains one other light-harvesting protein of photosystem I (Lhca) protein, probably Lhca5. The results indicate that Lhca2/3 and Lhca1/4 each provides about equally effective energy transfer routes to the PSI core complex, and that Lhca5 provides a less effective energy transfer route. We suggest that the specific location of each Lhca protein within the PSI-LHCI supercomplex is more important than the presence of so-called red chlorophylls in the Lhca proteins. |
| Links |
PubMed Online version:10.1016/j.febslet.2005.06.091 |
| Keywords |
Arabidopsis/genetics; Arabidopsis/physiology; Arabidopsis Proteins/genetics; Arabidopsis Proteins/metabolism; Chlorophyll Binding Proteins; Light; Light-Harvesting Protein Complexes/genetics; Light-Harvesting Protein Complexes/metabolism; Mutation; Oxidation-Reduction; Photosystem I Protein Complex/genetics; Photosystem I Protein Complex/metabolism; Plant Proteins/genetics; Plant Proteins/metabolism; Spectrometry, Fluorescence |
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Significance
Annotations
| Gene product | Qualifier | GO ID | GO term name | Evidence Code | with/from | Aspect | Notes | Status |
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