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4ri2

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Revision as of 06:57, 2 March 2023

Crystal structure of the photoprotective protein PsbS from spinach

Structural highlights

4ri2 is a 2 chain structure with sequence from Spinacia oleracea. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	, ,
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

PSBS_SPIOL Seems to be involved in non-photochemical quenching, a process maintains the balance between dissipation and utilization of light energy to minimize generation of oxidizing molecules, thereby protecting the plant against photo-oxidative damage.

Publication Abstract from PubMed

The photosystem II protein PsbS has an essential role in qE-type nonphotochemical quenching, which protects plants from photodamage under excess light conditions. qE is initiated by activation of PsbS by low pH, but the mechanism of PsbS action remains elusive. Here we report the low-pH crystal structures of PsbS from spinach in its free form and in complex with the qE inhibitor N,N'-dicyclohexylcarbodiimide (DCCD), revealing that PsbS adopts a unique folding pattern, and, unlike other members of the light-harvesting-complex superfamily, it is a noncanonical pigment-binding protein. Structural and biochemical evidence shows that both active and inactive PsbS form homodimers in the thylakoid membranes, and DCCD binding disrupts the lumenal intermolecular hydrogen bonds of the active PsbS dimer. Activation of PsbS by low pH during qE may involve a conformational change associated with altered lumenal intermolecular interactions of the PsbS dimer.

Crystal structures of the PsbS protein essential for photoprotection in plants.,Fan M, Li M, Liu Z, Cao P, Pan X, Zhang H, Zhao X, Zhang J, Chang W Nat Struct Mol Biol. 2015 Aug 10. doi: 10.1038/nsmb.3068. PMID:26258636^[1]

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

References

↑ Fan M, Li M, Liu Z, Cao P, Pan X, Zhang H, Zhao X, Zhang J, Chang W. Crystal structures of the PsbS protein essential for photoprotection in plants. Nat Struct Mol Biol. 2015 Aug 10. doi: 10.1038/nsmb.3068. PMID:26258636 doi:http://dx.doi.org/10.1038/nsmb.3068

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/4ri2"

Categories: Large Structures | Spinacia oleracea | Chang W | Fan M | Li M

@@ Line 3: / Line 3: @@
 <StructureSection load='4ri2' size='340' side='right'caption='[[4ri2]], [[Resolution|resolution]] 2.35&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[4ri2]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Spinacia_oleracea Spinacia oleracea]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4RI2 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4RI2 FirstGlance]. <br>
+<table><tr><td colspan='2'>[[4ri2]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Spinacia_oleracea Spinacia oleracea]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4RI2 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4RI2 FirstGlance]. <br>
-</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=BNG:B-NONYLGLUCOSIDE'>BNG</scene>, <scene name='pdbligand=CLA:CHLOROPHYLL+A'>CLA</scene>, <scene name='pdbligand=HG:MERCURY+(II)+ION'>HG</scene></td></tr>
+</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=BNG:B-NONYLGLUCOSIDE'>BNG</scene>, <scene name='pdbligand=CLA:CHLOROPHYLL+A'>CLA</scene>, <scene name='pdbligand=HG:MERCURY+(II)+ION'>HG</scene></td></tr>
-<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[4ri3|4ri3]]</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=4ri2 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4ri2 OCA], [https://pdbe.org/4ri2 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4ri2 RCSB], [https://www.ebi.ac.uk/pdbsum/4ri2 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4ri2 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=4ri2 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4ri2 OCA], [http://pdbe.org/4ri2 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4ri2 RCSB], [http://www.ebi.ac.uk/pdbsum/4ri2 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4ri2 ProSAT]</span></td></tr>
 </table>
 == Function ==
-[[http://www.uniprot.org/uniprot/PSBS_SPIOL PSBS_SPIOL]] Seems to be involved in non-photochemical quenching, a process maintains the balance between dissipation and utilization of light energy to minimize generation of oxidizing molecules, thereby protecting the plant against photo-oxidative damage.
+[https://www.uniprot.org/uniprot/PSBS_SPIOL PSBS_SPIOL] Seems to be involved in non-photochemical quenching, a process maintains the balance between dissipation and utilization of light energy to minimize generation of oxidizing molecules, thereby protecting the plant against photo-oxidative damage.
 <div style="background-color:#fffaf0;">
 == Publication Abstract from PubMed ==
@@ Line 28: / Line 27: @@
 [[Category: Large Structures]]
 [[Category: Spinacia oleracea]]
-[[Category: Chang, W]]
+[[Category: Chang W]]
-[[Category: Fan, M]]
+[[Category: Fan M]]
-[[Category: Li, M]]
+[[Category: Li M]]
-[[Category: Membrane protein]]
-[[Category: Photo protection]]
-[[Category: Pigment binding]]
-[[Category: Transmembrane helice]]

4ri2

From Proteopedia

Revision as of 06:57, 2 March 2023

Crystal structure of the photoprotective protein PsbS from spinach

Structural highlights

Function

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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