Biological water-oxidizing complex: a nano-sized manganese-calcium oxide in a protein environment.

Biological water-oxidizing complex: a nano-sized manganese-calcium oxide in a protein environment.

Photosynthesis research (2012-09-04)

Mohammad Mahdi Najafpour, Atefeh Nemati Moghaddam, Young Nam Yang, Eva-Mari Aro, Robert Carpentier, Julian J Eaton-Rye, Choon-Hwan Lee, Suleyman I Allakhverdiev

PMID22941557

ABSTRACT

The resolution of Photosystem II (PS II) crystals has been improved using isolated PS II from the thermophilic cyanobacterium Thermosynechococcus vulcanus. The new 1.9 Å resolution data have provided detailed information on the structure of the water-oxidizing complex (Umena et al. Nature 473: 55-61, 2011). The atomic level structure of the manganese-calcium cluster is important for understanding the mechanism of water oxidation and to design an efficient catalyst for water oxidation in artificial photosynthetic systems. Here, we have briefly reviewed our knowledge of the structure and function of the cluster.

MATERIALS

Product Number

Brand

Product Description

266167

Sigma-Aldrich

Manganese, chips, thickness <2.0 mm, 99%

266132

Sigma-Aldrich

Manganese, powder, −325 mesh, ≥99% trace metals basis

463728

Sigma-Aldrich

Manganese, powder, ≥99.9% trace metals basis

GF90559794

Manganese, foil, not light tested, 25x25mm, thickness 0.02mm, permanent polyester support, 98.7%

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Manganese, foil, not light tested, 50x50mm, thickness 0.002mm, permanent polyester support, 98.7%

GF99005193

Manganese, foil, not light tested, 25x25mm, thickness 0.015mm, permanent polyester support, 98.7%

GF05008092

Manganese, foil, not light tested, 25x25mm, thickness 0.005mm, permanent polyester support, 98.7%

GF00832081

Manganese, foil, not light tested, 50x50mm, thickness 0.015mm, permanent polyester support, 98.7%

GF60677646

Manganese, foil, not light tested, 50x50mm, thickness 0.0025mm, permanent polyester support, 98.7%

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Manganese, foil, not light tested, 50x50mm, thickness 0.0125mm, permanent polyester support, 98.7%

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Manganese, foil, not light tested, 50x50mm, thickness 0.01mm, permanent polyester support, 98.7%

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Manganese, rod, 50mm, diameter 4.0mm, cast, 99.5%

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Manganese, foil, not light tested, 25x25mm, thickness 0.007mm, permanent polyester support, 98.7%

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Manganese, foil, not light tested, 50x50mm, thickness 0.004mm, permanent polyester support, 98.7%

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Manganese, foil, not light tested, 50x50mm, thickness 0.02mm, permanent polyester support, 98.7%

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Manganese, foil, not light tested, 25x25mm, thickness 0.008mm, permanent polyester support, 98.7%

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Manganese, foil, not light tested, 50x50mm, thickness 0.003mm, permanent polyester support, 98.7%

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Manganese, foil, not light tested, 50x50mm, thickness 0.005mm, permanent polyester support, 98.7%

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Manganese, foil, not light tested, 50x50mm, thickness 0.025mm, permanent polyester support, 98.7%

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Manganese, foil, not light tested, 50x50mm, thickness 0.006mm, permanent polyester support, 98.7%

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Manganese, rod, 10mm, diameter 4.0mm, cast, 99.5%

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Manganese, foil, not light tested, 50x50mm, thickness 0.007mm, permanent polyester support, 98.7%

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Manganese, rod, 50mm, diameter 6.35mm, cast, 99.5%

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Manganese, foil, not light tested, 25x25mm, thickness 0.002mm, permanent polyester support, 98.7%

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Manganese, foil, not light tested, 25x25mm, thickness 0.025mm, permanent polyester support, 98.7%