3a9f

<StructureSection load='3a9f' size='340' side='right' caption='[[3a9f]], [[Resolution|resolution]] 1.30&Aring;' scene=''>

<table><tr><td colspan='2'>[[3a9f]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Atcc_49652 Atcc 49652]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3A9F OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3A9F FirstGlance]. <br>

</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=HEC:HEME+C'>HEC</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene>, <scene name='pdbligand=P33:3,6,9,12,15,18-HEXAOXAICOSANE-1,20-DIOL'>P33</scene>, <scene name='pdbligand=PG4:TETRAETHYLENE+GLYCOL'>PG4</scene>, <scene name='pdbligand=PGE:TRIETHYLENE+GLYCOL'>PGE</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>

<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">pscC ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1097 ATCC 49652])</td></tr>

<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3a9f FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3a9f OCA], [http://pdbe.org/3a9f PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3a9f RCSB], [http://www.ebi.ac.uk/pdbsum/3a9f PDBsum]</span></td></tr>

[[http://www.uniprot.org/uniprot/CY551_CHLTE CY551_CHLTE]] Monoheme cytochrome which is the immediate electron donor to P840 of the photosynthetic reaction center complex.

<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/a9/3a9f_consurf.spt"</scriptWhenChecked>

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== Publication Abstract from PubMed ==

In green sulfur photosynthetic bacteria, the cytochrome c(z) (cyt c(z)) subunit in the reaction center complex mediates electron transfer mainly from menaquinol/cytochrome c oxidoreductase to the special pair (P840) of the reaction center. The cyt c(z) subunit consists of an N-terminal transmembrane domain and a C-terminal soluble domain that binds a single heme group. The periplasmic soluble domain has been proposed to be highly mobile and to fluctuate between oxidoreductase and P840 during photosynthetic electron transfer. We have determined the crystal structure of the oxidized form of the C-terminal functional domain of the cyt c(z) subunit (C-cyt c(z)) from thermophilic green sulfur bacterium Chlorobium tepidum at 1.3-A resolution. The overall fold of C-cyt c(z) consists of four alpha-helices and is similar to that of class I cytochrome c proteins despite the low similarity in their amino acid sequences. The N-terminal structure of C-cyt c(z) supports the swinging mechanism previously proposed in relation with electron transfer, and the surface properties provide useful information on possible interaction sites with its electron transfer partners. Several characteristic features are observed for the heme environment: These include orientation of the axial ligands with respect to the heme plane, surface-exposed area of the heme, positions of water molecules, and hydrogen-bond network involving heme propionate groups. These structural features are essential for elucidating the mechanism for regulating the redox state of cyt c(z).

Crystal structure of the electron carrier domain of the reaction center cytochrome c(z) subunit from green photosynthetic bacterium Chlorobium tepidum.,Hirano Y, Higuchi M, Azai C, Oh-Oka H, Miki K, Wang ZY J Mol Biol. 2010 Apr 16;397(5):1175-87. Epub 2010 Feb 12. PMID:20156447<ref>PMID:20156447</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>

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<div class="pdbe-citations 3a9f" style="background-color:#fffaf0;"></div>

*[[Cytochrome c|Cytochrome c]]

[[Category: Atcc 49652]]

[[Category: Azai, C]]

[[Category: Higuchi, M]]

[[Category: Hirano, Y]]

[[Category: Miki, K]]

[[Category: Oh-oka, H]]

[[Category: Wang, Z Y]]

[[Category: Mono heme]]