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| | ==Crystal structure of Arabidopsis monothiol glutaredoxin AtGRXcp== | | ==Crystal structure of Arabidopsis monothiol glutaredoxin AtGRXcp== |
| - | <StructureSection load='3ipz' size='340' side='right' caption='[[3ipz]], [[Resolution|resolution]] 2.40Å' scene=''> | + | <StructureSection load='3ipz' size='340' side='right'caption='[[3ipz]], [[Resolution|resolution]] 2.40Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[3ipz]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Arath Arath]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3IPZ OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3IPZ FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[3ipz]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Arath Arath]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3IPZ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3IPZ FirstGlance]. <br> |
| - | </td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">GRXS14, CXIP1, At3g54900, F28P10.120 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=3702 ARATH])</td></tr> | + | </td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">GRXS14, CXIP1, At3g54900, F28P10.120 ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=3702 ARATH])</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=3ipz FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3ipz OCA], [http://pdbe.org/3ipz PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3ipz RCSB], [http://www.ebi.ac.uk/pdbsum/3ipz PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3ipz ProSAT]</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=3ipz FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3ipz OCA], [https://pdbe.org/3ipz PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3ipz RCSB], [https://www.ebi.ac.uk/pdbsum/3ipz PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3ipz ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/GRS14_ARATH GRS14_ARATH]] May only reduce GSH-thiol disulfides, but not protein disulfides (Potential). May protect cells against protein oxidative damage. May regulate CAX cation transporters.<ref>PMID:16829529</ref> | + | [[https://www.uniprot.org/uniprot/GRS14_ARATH GRS14_ARATH]] May only reduce GSH-thiol disulfides, but not protein disulfides (Potential). May protect cells against protein oxidative damage. May regulate CAX cation transporters.<ref>PMID:16829529</ref> |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
| | [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
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| | </StructureSection> | | </StructureSection> |
| | [[Category: Arath]] | | [[Category: Arath]] |
| | + | [[Category: Large Structures]] |
| | [[Category: Cheng, N]] | | [[Category: Cheng, N]] |
| | [[Category: Li, L]] | | [[Category: Li, L]] |
| Structural highlights
Function
[GRS14_ARATH] May only reduce GSH-thiol disulfides, but not protein disulfides (Potential). May protect cells against protein oxidative damage. May regulate CAX cation transporters.[1]
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
Publication Abstract from PubMed
Monothiol glutaredoxins (Grxs) play important roles in maintaining redox homeostasis in living cells and are conserved across species. Arabidopsis thaliana monothiol glutaredoxin AtGRXcp is critical for protection from oxidative stress in chloroplasts. The crystal structure of AtGRXcp has been determined at 2.4 A resolution. AtGRXcp has a glutaredoxin/thioredoxin-like fold with distinct structural features that differ from those of dithiol Grxs. The structure reveals that the putative active-site motif CGFS is well defined and is located on the molecular surface and that a long groove extends to both sides of the catalytic Cys97. Structural comparison and molecular modeling suggest that glutathione can bind in this groove and form extensive interactions with conserved charged residues including Lys89, Arg126 and Asp152. Further comparative studies reveal that a unique loop with five additional residues adjacent to the active-site motif may be a key structural feature of monothiol Grxs and may influence their function. This study provides the first structural information on plant CGFS-type monothiol Grxs, allowing a better understanding of the redox-regulation mechanism mediated by these plant Grxs.
Structure of Arabidopsis chloroplastic monothiol glutaredoxin AtGRXcp.,Li L, Cheng N, Hirschi KD, Wang X Acta Crystallogr D Biol Crystallogr. 2010 Jun;66(Pt 6):725-32. Epub 2010, May 15. PMID:20516625[2]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Cheng NH, Liu JZ, Brock A, Nelson RS, Hirschi KD. AtGRXcp, an Arabidopsis chloroplastic glutaredoxin, is critical for protection against protein oxidative damage. J Biol Chem. 2006 Sep 8;281(36):26280-8. Epub 2006 Jul 7. PMID:16829529 doi:M601354200
- ↑ Li L, Cheng N, Hirschi KD, Wang X. Structure of Arabidopsis chloroplastic monothiol glutaredoxin AtGRXcp. Acta Crystallogr D Biol Crystallogr. 2010 Jun;66(Pt 6):725-32. Epub 2010, May 15. PMID:20516625 doi:10.1107/S0907444910013119
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