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  Recent developments in biological water oxidation

Pérez-Navarro, M., Neese, F., Lubitz, W., Pantazis, D. A., & Cox, N. (2016). Recent developments in biological water oxidation. Current Opinion in Chemical Biology, 31(4), 113-119. doi:10.1016/j.cbpa.2016.02.007.

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Pérez-Navarro, Montserrat1, Author           
Neese, Frank2, Author           
Lubitz, Wolfgang1, Author           
Pantazis, Dimitrios A.2, Author           
Cox, Nicholas1, 3, Author           
Affiliations:
1Research Department Lubitz, Max Planck Institute for Chemical Energy Conversion, Max Planck Society, ou_3023873              
2Research Department Neese, Max Planck Institute for Chemical Energy Conversion, Max Planck Society, ou_3023886              
3Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia, ou_persistent22              

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 Abstract: Rapid progress has been made in the last five years towards resolution of the structure of nature's water splitting catalyst — a Mn4O5Ca cofactor embedded in Photosystem II — especially in the field of X-ray crystallography. In addition, recent magnetic resonance data have allowed the structure of the cofactor to be accessed in its last metastable intermediate state, prior to O–O bond formation. This activated form of the catalyst is geometrically similar to that seen by X-ray crystallography, which represents the resting state of the cofactor, but requires the coordination of an additional water molecule to the cofactor, rendering all Mn ions six coordinate. Importantly, it locates two water derived, Mn bound oxygen ligands in close proximity. It is these two oxygen ligands that likely form the product O2 molecule, as proposed earlier by quantum chemical modeling. Current views on the molecular level events that facilitate catalyst activation, that is, catalyst/substrate deprotonation, Mn oxidation and water molecule insertion are briefly described.

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Language(s): eng - English
 Dates: 2016-03-172016-04-01
 Publication Status: Published in print
 Pages: 7
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1016/j.cbpa.2016.02.007
 Degree: -

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Title: Current Opinion in Chemical Biology
  Other : Curr. Opin. Chem. Biol.
Source Genre: Journal
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Publ. Info: London : Elsevier Current Trends
Pages: - Volume / Issue: 31 (4) Sequence Number: - Start / End Page: 113 - 119 Identifier: ISSN: 1367-5931
CoNE: https://pure.mpg.de/cone/journals/resource/954925620166