| pubmed-article:9391172 | rdf:type | pubmed:Citation | lld:pubmed |
| pubmed-article:9391172 | lifeskim:mentions | umls-concept:C0599132 | lld:lifeskim |
| pubmed-article:9391172 | lifeskim:mentions | umls-concept:C0596988 | lld:lifeskim |
| pubmed-article:9391172 | lifeskim:mentions | umls-concept:C0026349 | lld:lifeskim |
| pubmed-article:9391172 | lifeskim:mentions | umls-concept:C1708111 | lld:lifeskim |
| pubmed-article:9391172 | lifeskim:mentions | umls-concept:C1705938 | lld:lifeskim |
| pubmed-article:9391172 | lifeskim:mentions | umls-concept:C1711351 | lld:lifeskim |
| pubmed-article:9391172 | lifeskim:mentions | umls-concept:C1527178 | lld:lifeskim |
| pubmed-article:9391172 | lifeskim:mentions | umls-concept:C0056927 | lld:lifeskim |
| pubmed-article:9391172 | pubmed:issue | 25 | lld:pubmed |
| pubmed-article:9391172 | pubmed:dateCreated | 1998-1-15 | lld:pubmed |
| pubmed-article:9391172 | pubmed:abstractText | Photosystem II is a reaction center protein complex located in photosynthetic membranes of plants, algae, and cyanobacteria. Using light energy, photosystem II catalyzes the oxidation of water and the reduction of plastoquinone, resulting in the release of molecular oxygen. A key component of photosystem II is cytochrome b559, a membrane-embedded heme protein with an unknown function. The cytochrome is unusual in that a heme links two separate polypeptide subunits, alpha and beta, either as a heterodimer (alphabeta) or as two homodimers (alpha2 and beta2). To determine the structural organization of cytochrome b559 in the membrane, we used site-directed mutagenesis to fuse the coding regions of the two respective genes in the cyanobacterium Synechocystis sp. PCC 6803. In this construction, the C terminus of the alpha subunit (9 kDa) is attached to the N terminus of the beta subunit (5 kDa) to form a 14-kDa alphabeta fusion protein that is predicted to have two membrane-spanning alpha-helices with antiparallel orientations. Cells containing the alphabeta fusion protein grow photoautotrophically and assemble functional photosystem II complexes. Optical spectroscopy shows that the alphabeta fusion protein binds heme and is incorporated into photosystem II. These data support a structural model of cytochrome b559 in which one heme is coordinated to an alpha2 homodimer and a second heme is coordinated to a beta2 homodimer. In this model, each photosystem II complex contains two cytochrome b559 hemes, with the alpha2 heme located near the stromal side of the membrane and the beta2 heme located near the lumenal side. | lld:pubmed |
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| pubmed-article:9391172 | pubmed:language | eng | lld:pubmed |
| pubmed-article:9391172 | pubmed:journal | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:9391172 | pubmed:citationSubset | IM | lld:pubmed |
| pubmed-article:9391172 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:9391172 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
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| pubmed-article:9391172 | pubmed:status | MEDLINE | lld:pubmed |
| pubmed-article:9391172 | pubmed:month | Dec | lld:pubmed |
| pubmed-article:9391172 | pubmed:issn | 0027-8424 | lld:pubmed |
| pubmed-article:9391172 | pubmed:author | pubmed-author:WhitmarshJJ | lld:pubmed |
| pubmed-article:9391172 | pubmed:author | pubmed-author:McNamaraV PVP | lld:pubmed |
| pubmed-article:9391172 | pubmed:author | pubmed-author:PakrasiH BHB | lld:pubmed |
| pubmed-article:9391172 | pubmed:author | pubmed-author:SutterwalaF... | lld:pubmed |
| pubmed-article:9391172 | pubmed:issnType | Print | lld:pubmed |
| pubmed-article:9391172 | pubmed:day | 9 | lld:pubmed |
| pubmed-article:9391172 | pubmed:volume | 94 | lld:pubmed |
| pubmed-article:9391172 | pubmed:owner | NLM | lld:pubmed |
| pubmed-article:9391172 | pubmed:authorsComplete | Y | lld:pubmed |
| pubmed-article:9391172 | pubmed:pagination | 14173-8 | lld:pubmed |
| pubmed-article:9391172 | pubmed:dateRevised | 2010-9-13 | lld:pubmed |
| pubmed-article:9391172 | pubmed:meshHeading | pubmed-meshheading:9391172-... | lld:pubmed |
| pubmed-article:9391172 | pubmed:meshHeading | pubmed-meshheading:9391172-... | lld:pubmed |
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| pubmed-article:9391172 | pubmed:meshHeading | pubmed-meshheading:9391172-... | lld:pubmed |
| pubmed-article:9391172 | pubmed:meshHeading | pubmed-meshheading:9391172-... | lld:pubmed |
| pubmed-article:9391172 | pubmed:meshHeading | pubmed-meshheading:9391172-... | lld:pubmed |
| pubmed-article:9391172 | pubmed:meshHeading | pubmed-meshheading:9391172-... | lld:pubmed |
| pubmed-article:9391172 | pubmed:meshHeading | pubmed-meshheading:9391172-... | lld:pubmed |
| pubmed-article:9391172 | pubmed:year | 1997 | lld:pubmed |
| pubmed-article:9391172 | pubmed:articleTitle | Structural model of cytochrome b559 in photosystem II based on a mutant with genetically fused subunits. | lld:pubmed |
| pubmed-article:9391172 | pubmed:affiliation | Department of Plant Biology, U.S. Department of Agriculture/Agricultural Research Service, University of Illinois, Urbana, IL 61801, USA. | lld:pubmed |
| pubmed-article:9391172 | pubmed:publicationType | Journal Article | lld:pubmed |
| pubmed-article:9391172 | pubmed:publicationType | Research Support, U.S. Gov't, P.H.S. | lld:pubmed |
| pubmed-article:9391172 | pubmed:publicationType | Research Support, U.S. Gov't, Non-P.H.S. | lld:pubmed |
| pubmed-article:9391172 | pubmed:publicationType | Research Support, Non-U.S. Gov't | lld:pubmed |
