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  The antenna system of photosystem II from Thermosynechococcus elongatus at 3.2 A resolution

Loll, B., Kern, J., Zouni, A., Saenger, W., Biesiadka, J., & Irrgang, K. (2005). The antenna system of photosystem II from Thermosynechococcus elongatus at 3.2 A resolution. Photosynthesis Res., 86(1-2), 175-184. doi:10.1007/s11120-005-4117-0.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0002-510C-6 Version Permalink: http://hdl.handle.net/21.11116/0000-0002-510D-5
Genre: Journal Article

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PhotosynthRes_86_2005_175.pdf (Any fulltext), 323KB
 
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 Creators:
Loll, Bernhard1, Author              
Kern, Jana2, Author              
Zouni, Athina, Author
Saenger, Wolfram, Author
Biesiadka, Jacek, Author
Irrgang, Klaus−Dieter, Author
Affiliations:
1Department of Biomolecular Mechanisms, Max Planck Institute for Medical Research, Max Planck Society, ou_1497700              
2Department of Biomedical Optics, Max Planck Institute for Medical Research, Max Planck Society, ou_1497699              

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Free keywords: antenna system, crystal structure, excitation energy transfer, Photosystem II, Thermosynechococcus elongatus, the antenna system of Photosystem II
 Abstract: The content and type of cofactors harboured in the Photosystem II core complex (PS IIcc) of the cyanobacterium Thermosynechococcus elongatus has been determined by biochemical and spectroscopic methods. 17 +/- 1 chlorophyll a per pheophytin a and 0.25 beta-carotene per chlorophyll a have been found in re-dissolved crystals of dimeric PS IIcc. The X-ray crystal structure of PS IIcc from Thermosynechococcus elongatus at 3.2 A resolution clearly shows chlorophyll a molecules arranged in two layers close to the cytoplasmic and lumenal sides of the thylakoid membrane. Each of the cytoplasmic layers contains 9 chlorophyll a, whose positions and orientations are related by a local twofold rotation pseudo-C2 axis passing through the non-haem Fe2+. These chlorophyll a are arranged comparably to those in the antenna domains of PsaA and PsaB of cyanobacterial Photosystem I affirming an evolutionary relation. The chlorophyll a in the lumenal layer are less well conserved between Photosystems I and II and even between CP43 and CP47 with 4 chlorophyll a in the former and 7 in the latter.

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Language(s): eng - English
 Dates: 2004-11-292005-03-182005-11-01
 Publication Status: Published in print
 Pages: 10
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 Rev. Type: Peer
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Title: Photosynthesis Res.
  Alternative Title : Photosynthesis Res.
Source Genre: Journal
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Pages: - Volume / Issue: 86 (1-2) Sequence Number: - Start / End Page: 175 - 184 Identifier: -