| Literature DB >> 17107674 |
Robert Lucinski1, Volkmar H R Schmid, Stefan Jansson, Frank Klimmek.
Abstract
In the outer antenna (LHCI) of higher plant photosystem I (PSI) four abundantly expressed light-harvesting protein of photosystem I (Lhca)-type proteins are organized in two heterodimeric domains (Lhca1/Lhca4 and Lhca2/Lhca3). Our cross-linking studies on PSI-LHCI preparations from wildtype Arabidopsis and pea plants indicate an exclusive interaction of the rarely expressed Lhca5 light-harvesting protein with LHCI in the Lhca2/Lhca3-site. In PSI particles with an altered LHCI composition Lhca5 assembles in the Lhca1/Lhca4 site, partly as a homodimer. This flexibility indicates a binding-competitive model for the LHCI assembly in plants regulated by molecular interactions of the Lhca proteins with the PSI core.Entities:
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Year: 2006 PMID： 17107674 DOI： 10.1016/j.febslet.2006.10.063
Source DB: PubMed Journal: FEBS Lett ISSN： 0014-5793 Impact factor: 4.124