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4il6

From Proteopedia

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Structure of Sr-substituted photosystem II

Structural highlights

4il6 is a 20 chain structure with sequence from Thermostichus vulcanus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 2.1Å
Ligands:	, , , , , , , , , , , , , , , , , , ,
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

PSBA_THEVL D1 (PsbA) and D2 (PsbD) bind P680, the primary electron donor of photosystem II (PSII) as well as electron acceptors. 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_01379]

Publication Abstract from PubMed

Oxygen-evolving complex of photosystem II (PSII) is a tetra-manganese calcium penta-oxygenic cluster (MnCaO) catalyzing light-induced water oxidation through several intermediate states (S-states) by a mechanism that is not fully understood. To elucidate the roles of Ca in this cluster and the possible location of water substrates in this process, we crystallized Sr-substituted PSII from Thermosynechococcus vulcanus, analyzed its crystal structure at a resolution of 2.1 A, and compared it with the 1.9 A structure of native PSII. Our analysis showed that the position of Sr was moved toward the outside of the cubane structure of the MnCaO-cluster relative to that of Ca, resulting in a general elongation of the bond distances between Sr and its surrounding atoms compared with the corresponding distances in the Ca-containing cluster. In particular, we identified an apparent elongation in the bond distance between Sr and one of the two terminal water ligands of Ca, W3, whereas that of the Sr-W4 distance was not much changed. This result may contribute to the decrease of oxygen evolution upon Sr-substitution, and suggests a weak binding and rather mobile nature of this particular water molecule (W3), which in turn implies the possible involvement of this water molecule as a substrate in the O-O bond formation. In addition, the PsbY subunit, which was absent in the 1.9 A structure of native PSII, was found in the Sr-PSII structure.

Structure of Sr-substituted photosystem II at 2.1 A resolution and its implications in the mechanism of water oxidation.,Koua FH, Umena Y, Kawakami K, Shen JR Proc Natl Acad Sci U S A. 2013 Mar 5;110(10):3889-94. doi:, 10.1073/pnas.1219922110. Epub 2013 Feb 20. PMID:23426624^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Koua FH, Umena Y, Kawakami K, Shen JR. Structure of Sr-substituted photosystem II at 2.1 A resolution and its implications in the mechanism of water oxidation. Proc Natl Acad Sci U S A. 2013 Mar 5;110(10):3889-94. doi:, 10.1073/pnas.1219922110. Epub 2013 Feb 20. PMID:23426624 doi:http://dx.doi.org/10.1073/pnas.1219922110

1 Structural highlights
2 Function
3 Publication Abstract from PubMed
4 See Also
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/4il6"

@@ Line 1: / Line 1: @@
 ==Structure of Sr-substituted photosystem II==
-<StructureSection load='4il6' size='340' side='right' caption='[[4il6]], [[Resolution|resolution]] 2.10&Aring;' scene=''>
+<StructureSection load='4il6' size='340' side='right'caption='[[4il6]], [[Resolution|resolution]] 2.10&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[4il6]] is a 39 chain structure with sequence from [http://en.wikipedia.org/wiki/Thermosynechococcus_elongatus_bp-1 Thermosynechococcus elongatus bp-1] and [http://en.wikipedia.org/wiki/Thermosynechococcus_vulcanus Thermosynechococcus vulcanus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4IL6 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4IL6 FirstGlance]. <br>
+<table><tr><td colspan='2'>[[4il6]] is a 20 chain structure with sequence from [https://en.wikipedia.org/wiki/Thermostichus_vulcanus Thermostichus vulcanus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4IL6 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4IL6 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=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=CLA:CHLOROPHYLL+A'>CLA</scene>, <scene name='pdbligand=DGD:DIGALACTOSYL+DIACYL+GLYCEROL+(DGDG)'>DGD</scene>, <scene name='pdbligand=DMS:DIMETHYL+SULFOXIDE'>DMS</scene>, <scene name='pdbligand=FE2:FE+(II)+ION'>FE2</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene>, <scene name='pdbligand=HTG:HEPTYL+1-THIOHEXOPYRANOSIDE'>HTG</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=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=OER:SR-MN4-O5+CLUSTER'>OER</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>, <scene name='pdbligand=UNL:UNKNOWN+LIGAND'>UNL</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]] 2.1&#8491;</td></tr>
-<tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=FME:N-FORMYLMETHIONINE'>FME</scene></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=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=CLA:CHLOROPHYLL+A'>CLA</scene>, <scene name='pdbligand=DGD:DIGALACTOSYL+DIACYL+GLYCEROL+(DGDG)'>DGD</scene>, <scene name='pdbligand=DMS:DIMETHYL+SULFOXIDE'>DMS</scene>, <scene name='pdbligand=FE2:FE+(II)+ION'>FE2</scene>, <scene name='pdbligand=FME:N-FORMYLMETHIONINE'>FME</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene>, <scene name='pdbligand=HTG:HEPTYL+1-THIOHEXOPYRANOSIDE'>HTG</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=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=OER:SR-MN4-O5+CLUSTER'>OER</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>, <scene name='pdbligand=UNL:UNKNOWN+LIGAND'>UNL</scene></td></tr>
-<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Photosystem_II Photosystem II], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.10.3.9 1.10.3.9] </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=4il6 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4il6 OCA], [https://pdbe.org/4il6 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4il6 RCSB], [https://www.ebi.ac.uk/pdbsum/4il6 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4il6 ProSAT]</span></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=4il6 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4il6 OCA], [http://pdbe.org/4il6 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4il6 RCSB], [http://www.ebi.ac.uk/pdbsum/4il6 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4il6 ProSAT]</span></td></tr>
 </table>
 == Function ==
-[[http://www.uniprot.org/uniprot/PSBL_THEVL PSBL_THEVL]] This protein is a component of the reaction center 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_01317] [[http://www.uniprot.org/uniprot/PSBA_THEVL PSBA_THEVL]] D1 (PsbA) and D2 (PsbD) bind P680, the primary electron donor of photosystem II (PSII) as well as electron acceptors. 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_01379] [[http://www.uniprot.org/uniprot/CY550_THEVL CY550_THEVL]] Low-potential cytochrome c that plays a role in the oxygen-evolving complex of photosystem II (PSII). Binds to PSII in the absence of other extrinsic proteins; required for binding of the PsbU protein to photosystem II. In PSII particles without oxygen-evolving activity, maximal activity is restored only by binding of cytochrome c550, PsbU and the 33 kDa PsbO protein. 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.<ref>PMID:1314738</ref> <ref>PMID:8382523</ref>  [[http://www.uniprot.org/uniprot/PSBF_THEVL PSBF_THEVL]] This b-type cytochrome is tightly associated with the reaction center 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_00643] [[http://www.uniprot.org/uniprot/PSBJ_THEVL PSBJ_THEVL]] This protein is a component of the reaction center 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_01305] [[http://www.uniprot.org/uniprot/PSBT_THEVL PSBT_THEVL]] Seems to play a role in the dimerization 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_00808] [[http://www.uniprot.org/uniprot/PSBE_THEVL PSBE_THEVL]] This b-type cytochrome is tightly associated with the reaction center 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_00642]
+[https://www.uniprot.org/uniprot/PSBA_THEVL PSBA_THEVL] D1 (PsbA) and D2 (PsbD) bind P680, the primary electron donor of photosystem II (PSII) as well as electron acceptors. 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_01379]
 <div style="background-color:#fffaf0;">
 == Publication Abstract from PubMed ==
@@ Line 20: / Line 19: @@
 </div>
 <div class="pdbe-citations 4il6" style="background-color:#fffaf0;"></div>
+==See Also==
+*[[Cytochrome C 3D structures|Cytochrome C 3D structures]]
+*[[Photosystem II 3D structures|Photosystem II 3D structures]]
 == References ==
 <references/>
 __TOC__
 </StructureSection>
-[[Category: Photosystem II]]
+[[Category: Large Structures]]
-[[Category: Thermosynechococcus elongatus bp-1]]
+[[Category: Thermostichus vulcanus]]
-[[Category: Thermosynechococcus vulcanus]]
+[[Category: Kamiya N]]
-[[Category: Kamiya, N]]
+[[Category: Kawakami K]]
-[[Category: Kawakami, K]]
+[[Category: Koua FHM]]
-[[Category: Koua, F H.M]]
+[[Category: Shen JR]]
-[[Category: Shen, J R]]
+[[Category: Umena Y]]
-[[Category: Umena, Y]]
-[[Category: Electron transfer]]
-[[Category: Electron transport]]
-[[Category: Light-driven water oxidation]]
-[[Category: Membrane-protein complex]]
-[[Category: Oxygen evolution]]
-[[Category: Oxygen-evolving complex]]
-[[Category: Photosynthesis]]
-[[Category: Photosystem ii]]
-[[Category: Proton-coupled electron transfer]]
-[[Category: Reaction centre]]
-[[Category: Sr-substituted photosystem ii]]
-[[Category: Substrate water molecule]]
-[[Category: Trans-membrane alpha helix]]

4il6

From Proteopedia

Current revision

Structure of Sr-substituted photosystem II

Structural highlights

Function

Publication Abstract from PubMed

See Also

References

Contents

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