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==Crystal Structure of Monomeric Form of Cyanobacterial Photosystem II==
==Crystal Structure of Monomeric Form of Cyanobacterial Photosystem II==
<StructureSection load='3kzi' size='340' side='right' caption='[[3kzi]], [[Resolution|resolution]] 3.60&Aring;' scene=''>
<StructureSection load='3kzi' size='340' side='right'caption='[[3kzi]], [[Resolution|resolution]] 3.60&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[3kzi]] is a 19 chain structure with sequence from [http://en.wikipedia.org/wiki/Thermosynechococcus_elongatus Thermosynechococcus elongatus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3KZI OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3KZI FirstGlance]. <br>
<table><tr><td colspan='2'>[[3kzi]] is a 10 chain structure with sequence from [https://en.wikipedia.org/wiki/Thermosynechococcus_vestitus_BP-1 Thermosynechococcus vestitus BP-1]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3KZI OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3KZI FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=BCR:BETA-CAROTENE'>BCR</scene>, <scene name='pdbligand=BCT:BICARBONATE+ION'>BCT</scene>, <scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=CLA:CHLOROPHYLL+A'>CLA</scene>, <scene name='pdbligand=DGD:DIGALACTOSYL+DIACYL+GLYCEROL+(DGDG)'>DGD</scene>, <scene name='pdbligand=FE2:FE+(II)+ION'>FE2</scene>, <scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene>, <scene name='pdbligand=LHG:1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE'>LHG</scene>, <scene name='pdbligand=LMG:1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE'>LMG</scene>, <scene name='pdbligand=LMT:DODECYL-BETA-D-MALTOSIDE'>LMT</scene>, <scene name='pdbligand=MES:2-(N-MORPHOLINO)-ETHANESULFONIC+ACID'>MES</scene>, <scene name='pdbligand=OEC:OXYGEN+EVOLVING+SYSTEM'>OEC</scene>, <scene name='pdbligand=PHO:PHEOPHYTIN+A'>PHO</scene>, <scene name='pdbligand=PL9:2,3-DIMETHYL-5-(3,7,11,15,19,23,27,31,35-NONAMETHYL-2,6,10,14,18,22,26,30,34-HEXATRIACONTANONAENYL-2,5-CYCLOHEXADIENE-1,4-DIONE-2,3-DIMETHYL-5-SOLANESYL-1,4-BENZOQUINONE'>PL9</scene>, <scene name='pdbligand=SQD:1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL'>SQD</scene></td></tr>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 3.6&#8491;</td></tr>
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3bz1|3bz1]], [[3bz2|3bz2]]</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=BCR:BETA-CAROTENE'>BCR</scene>, <scene name='pdbligand=BCT:BICARBONATE+ION'>BCT</scene>, <scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=CLA:CHLOROPHYLL+A'>CLA</scene>, <scene name='pdbligand=DGD:DIGALACTOSYL+DIACYL+GLYCEROL+(DGDG)'>DGD</scene>, <scene name='pdbligand=FE2:FE+(II)+ION'>FE2</scene>, <scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene>, <scene name='pdbligand=LHG:1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE'>LHG</scene>, <scene name='pdbligand=LMG:1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE'>LMG</scene>, <scene name='pdbligand=LMT:DODECYL-BETA-D-MALTOSIDE'>LMT</scene>, <scene name='pdbligand=MES:2-(N-MORPHOLINO)-ETHANESULFONIC+ACID'>MES</scene>, <scene name='pdbligand=PHO:PHEOPHYTIN+A'>PHO</scene>, <scene name='pdbligand=PL9:2,3-DIMETHYL-5-(3,7,11,15,19,23,27,31,35-NONAMETHYL-2,6,10,14,18,22,26,30,34-HEXATRIACONTANONAENYL-2,5-CYCLOHEXADIENE-1,4-DIONE-2,3-DIMETHYL-5-SOLANESYL-1,4-BENZOQUINONE'>PL9</scene>, <scene name='pdbligand=SQD:1,2-DI-O-ACYL-3-O-[6-DEOXY-6-SULFO-ALPHA-D-GLUCOPYRANOSYL]-SN-GLYCEROL'>SQD</scene></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=3kzi FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3kzi OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3kzi RCSB], [http://www.ebi.ac.uk/pdbsum/3kzi PDBsum]</span></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3kzi FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3kzi OCA], [https://pdbe.org/3kzi PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3kzi RCSB], [https://www.ebi.ac.uk/pdbsum/3kzi PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3kzi ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
[[http://www.uniprot.org/uniprot/PSBF_THEEB PSBF_THEEB]] This b-type cytochrome is tightly associated with the reaction center of photosystem II and possibly is part of the water-oxidation complex (By similarity).[HAMAP-Rule:MF_00643] [[http://www.uniprot.org/uniprot/PSBL_THEEB PSBL_THEEB]] Required for PSII activity (By similarity). [[http://www.uniprot.org/uniprot/PSBJ_THEEB PSBJ_THEEB]] This protein is a component of the reaction center of photosystem II (By similarity). [[http://www.uniprot.org/uniprot/YCF12_THEEB YCF12_THEEB]] A core subunit of photosystem II (PSII).[HAMAP-Rule:MF_01329] [[http://www.uniprot.org/uniprot/PSBU_THEEB PSBU_THEEB]] Stabilizes the structure of photosystem II oxygen-evolving complex (OEC), the ion environment of oxygen evolution and protects the OEC against heat-induced inactivation (By similarity).[HAMAP-Rule:MF_00589] [[http://www.uniprot.org/uniprot/PSBT_THEEB PSBT_THEEB]] Seems to play a role in the dimerization of PSII.<ref>PMID:15653799</ref> [[http://www.uniprot.org/uniprot/PSBI_THEEB PSBI_THEEB]] This protein is a component of the reaction center of photosystem II.[HAMAP-Rule:MF_01316] [[http://www.uniprot.org/uniprot/PSBA1_THEEB PSBA1_THEEB]] This is one of the two reaction center proteins of photosystem II. [[http://www.uniprot.org/uniprot/PSBX_THEEB PSBX_THEEB]] Involved in the binding and/or turnover of quinones at the Q(B) site of Photosystem II.<ref>PMID:11230572</ref> [[http://www.uniprot.org/uniprot/PSBZ_THEEB PSBZ_THEEB]] Controls the interaction of photosystem II (PSII) cores with the light-harvesting antenna. May also aid in binding of PsbK, Ycf12 and the oxygen-evolving complex to PSII, at least in vitro.<ref>PMID:17967798</ref> [[http://www.uniprot.org/uniprot/PSBK_THEEB PSBK_THEEB]] This protein is a component of the reaction center of photosystem II.[HAMAP-Rule:MF_00441] [[http://www.uniprot.org/uniprot/PSBO_THEEB PSBO_THEEB]] MSP binds to a putative Mn-binding protein and keeps 2 of the 4 Mn-atoms associated with PSII (By similarity). [[http://www.uniprot.org/uniprot/CY550_THEEB CY550_THEEB]] Low-potential cytochrome c that plays a role in the oxygen-evolving complex of photosystem II. It is not essential for growth under normal conditions but is required under low CO(2) concentrations.[HAMAP-Rule:MF_01378] [[http://www.uniprot.org/uniprot/PSBE_THEEB PSBE_THEEB]] This b-type cytochrome is tightly associated with the reaction center of photosystem II and possibly is part of the water-oxidation complex.[HAMAP-Rule:MF_00642]
[https://www.uniprot.org/uniprot/PSBX_THEVB PSBX_THEVB] Involved in the binding and/or turnover of quinones at the Q(B) site of photosystem II (PSII). PSII is a light-driven water plastoquinone oxidoreductase, using light energy to abstract electrons from H(2)O, generating a proton gradient subsequently used for ATP formation.[HAMAP-Rule:MF_01386]<ref>PMID:11230572</ref> <ref>PMID:20558739</ref> <ref>PMID:21367867</ref> <ref>PMID:25006873</ref>  
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
Check<jmol>
   <jmolCheckbox>
   <jmolCheckbox>
     <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/kz/3kzi_consurf.spt"</scriptWhenChecked>
     <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/kz/3kzi_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>
     <text>to colour the structure by Evolutionary Conservation</text>
   </jmolCheckbox>
   </jmolCheckbox>
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/chain_selection.php?pdb_ID=2ata ConSurf].
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=3kzi ConSurf].
<div style="clear:both"></div>
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
<div style="background-color:#fffaf0;">
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
</div>
<div class="pdbe-citations 3kzi" style="background-color:#fffaf0;"></div>


==See Also==
==See Also==
*[[Cytochrome c|Cytochrome c]]
*[[Cytochrome C 3D structures|Cytochrome C 3D structures]]
*[[Photosystem II|Photosystem II]]
*[[Photosystem II 3D structures|Photosystem II 3D structures]]
== References ==
== References ==
<references/>
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Thermosynechococcus elongatus]]
[[Category: Large Structures]]
[[Category: Broser, M]]
[[Category: Thermosynechococcus vestitus BP-1]]
[[Category: Gabdulkhakov, A]]
[[Category: Broser M]]
[[Category: Guskov, A]]
[[Category: Gabdulkhakov A]]
[[Category: Kern, J]]
[[Category: Guskov A]]
[[Category: Saenger, W]]
[[Category: Kern J]]
[[Category: Zouni, A]]
[[Category: Saenger W]]
[[Category: Electron transport]]
[[Category: Zouni A]]
[[Category: Electron transport photosystem]]
[[Category: Heme]]
[[Category: Iron]]
[[Category: Manganese]]
[[Category: Membrane complex]]
[[Category: Metal-binding]]
[[Category: Photosynthesis]]
[[Category: Photosystem ii]]
[[Category: Ps ii]]
[[Category: Ps2]]
[[Category: Reaction center]]
[[Category: Thylakoid]]
[[Category: Transmembrane alpha-helix]]

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