1s5l
From Proteopedia
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| , resolution 3.5Å | |||||||
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| Ligands: | , , , , , , , , , | ||||||
| Related: | 1IZL, 1FE1
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| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Architecture of the photosynthetic oxygen evolving center
Overview
Photosynthesis uses light energy to drive the oxidation of water at an oxygen-evolving catalytic site within photosystem II (PSII). We report the structure of PSII of the cyanobacterium Thermosynechococcus elongatus at 3.5 angstrom resolution. We have assigned most of the amino acid residues of this 650-kilodalton dimeric multisubunit complex and refined the structure to reveal its molecular architecture. Consequently, we are able to describe details of the binding sites for cofactors and propose a structure of the oxygen-evolving center (OEC). The data strongly suggest that the OEC contains a cubane-like Mn3CaO4 cluster linked to a fourth Mn by a mono-micro-oxo bridge. The details of the surrounding coordination sphere of the metal cluster and the implications for a possible oxygen-evolving mechanism are discussed.
About this Structure
1S5L is a Protein complex structure of sequences from Thermosynechococcus elongatus. The following page contains interesting information on the relation of 1S5L with [Photosystem II]. Full crystallographic information is available from OCA.
Reference
Architecture of the photosynthetic oxygen-evolving center., Ferreira KN, Iverson TM, Maghlaoui K, Barber J, Iwata S, Science. 2004 Mar 19;303(5665):1831-8. Epub 2004 Feb 5. PMID:14764885
Page seeded by OCA on Sun Mar 30 23:37:40 2008
