Supramolecular organization of phycobiliproteins in the chlorophyll d-containing cyanobacterium Acaryochloris marina


Chen, Min, Floetenmeyer, Matthias and Bibby, Thomas S. (2009) Supramolecular organization of phycobiliproteins in the chlorophyll d-containing cyanobacterium Acaryochloris marina. FEBS Letters, 583, (15), 2535-2539. (doi:10.1016/j.febslet.2009.07.012).

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Description/Abstract

Here we report the high-resolution detail of the organization of phycobiliprotein structures associated with photosynthetic membranes of the chlorophyll d-containing cyanobacterium Acaryochloris marina. Cryo-electron transmission-microscopy on native cell sections show extensive patches of near-crystalline phycobiliprotein rods that are associated with the stromal side of photosynthetic membranes. This supramolecular photosynthetic structure represents a novel mechanism of organizing the photosynthetic light-harvesting machinery. In addition, the specific location of phycobiliprotein patches suggests a physical separation of photosystem I and photosystem II reaction centres. Based on this finding and the known photosystem’s structure in Acaryochloris, we discuss possible membrane arrangements of photosynthetic membrane complexes in this species.

Item Type: Article
ISSNs: 0014-5793 (print)
Related URLs:
Keywords: Phycobiliprotein, Cryo-electron microscopy, Membrane organization, Acaryochloris marina
Subjects: Q Science > QR Microbiology
Divisions: University Structure - Pre August 2011 > School of Ocean & Earth Science (SOC/SOES)
ePrint ID: 67022
Date Deposited: 30 Jul 2009
Last Modified: 27 Mar 2014 18:48
Contact Email Address: tsb@noc.soton.ac.uk
URI: http://eprints.soton.ac.uk/id/eprint/67022

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