Consoli E, Croce R, Dunlap DD, Finzi L. Diffusion of light-harvesting complex II in the thylakoid membranes.
EMBO Rep 2006;
6:782-6. [PMID:
16007068 PMCID:
PMC1369140 DOI:
10.1038/sj.embor.7400464]
[Citation(s) in RCA: 40] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2005] [Revised: 04/25/2005] [Accepted: 05/30/2005] [Indexed: 11/08/2022] Open
Abstract
The light-harvesting complex II (LHCII) is the main energy absorber for photosynthesis in green plants, and its translocation between photosystems I and II is the primary means of energy redistribution between them. Using single-particle tracking, we performed the first measurement of the mobility of LHCII in the photosynthetic membranes in both the nonphosphorylated and the phosphorylated (P-LHCII) conformations. These are part of an important, reversible, energy re-equilibration process called the state transition. We found that the population of P-LHCII in unappressed membranes is more mobile than the population of non-P-LHCII from the same regions.
Collapse