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| | ==Crystal structure of native abscisic acid receptor PYL5 at 2.65 Angstrom== | | ==Crystal structure of native abscisic acid receptor PYL5 at 2.65 Angstrom== |
| - | <StructureSection load='4jdl' size='340' side='right' caption='[[4jdl]], [[Resolution|resolution]] 2.65Å' scene=''> | + | <StructureSection load='4jdl' size='340' side='right'caption='[[4jdl]], [[Resolution|resolution]] 2.65Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[4jdl]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Arath Arath]. This structure supersedes the now removed PDB entry [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=3qrz 3qrz]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4JDL OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4JDL FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[4jdl]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Arabidopsis_thaliana Arabidopsis thaliana]. This structure supersedes the now removed PDB entry [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=3qrz 3qrz]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4JDL OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4JDL FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene></td></tr> | + | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene></td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3klx|3klx]], [[3oqu|3oqu]], [[3kl1|3kl1]]</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=4jdl FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4jdl OCA], [https://pdbe.org/4jdl PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4jdl RCSB], [https://www.ebi.ac.uk/pdbsum/4jdl PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4jdl ProSAT]</span></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">PYL5 ([http://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=4jdl FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4jdl OCA], [http://pdbe.org/4jdl PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4jdl RCSB], [http://www.ebi.ac.uk/pdbsum/4jdl PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4jdl ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/PYL5_ARATH PYL5_ARATH]] Receptor for abscisic acid (ABA) required for ABA-mediated responses such as stomatal closure and germination inhibition. Inhibits the activity of group-A protein phosphatases type 2C (PP2Cs) when activated by ABA. Confers enhanced sensitivity to ABA.<ref>PMID:19624469</ref> <ref>PMID:19407143</ref> | + | [https://www.uniprot.org/uniprot/PYL5_ARATH PYL5_ARATH] Receptor for abscisic acid (ABA) required for ABA-mediated responses such as stomatal closure and germination inhibition. Inhibits the activity of group-A protein phosphatases type 2C (PP2Cs) when activated by ABA. Confers enhanced sensitivity to ABA.<ref>PMID:19624469</ref> <ref>PMID:19407143</ref> |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| | ==See Also== | | ==See Also== |
| - | *[[PYR/PYL/RCAR family of ABA receptors|PYR/PYL/RCAR family of ABA receptors]] | + | *[[Abscisic acid receptor 3D structures|Abscisic acid receptor 3D structures]] |
| | == References == | | == References == |
| | <references/> | | <references/> |
| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Arath]] | + | [[Category: Arabidopsis thaliana]] |
| - | [[Category: Chen, Z]] | + | [[Category: Large Structures]] |
| - | [[Category: Zhang, Q]] | + | [[Category: Chen Z]] |
| - | [[Category: Zhang, X]] | + | [[Category: Zhang Q]] |
| - | [[Category: Abscisic acid receptor]] | + | [[Category: Zhang X]] |
| - | [[Category: Hormone receptor]]
| + | |
| - | [[Category: Pp2c]]
| + | |
| Structural highlights
Function
PYL5_ARATH Receptor for abscisic acid (ABA) required for ABA-mediated responses such as stomatal closure and germination inhibition. Inhibits the activity of group-A protein phosphatases type 2C (PP2Cs) when activated by ABA. Confers enhanced sensitivity to ABA.[1] [2]
Publication Abstract from PubMed
The phytohormone abscisic acid ((+)-ABA) plays a key role in many processes. The biological and biochemical activities of unnatural (-)-ABA have been extensively investigated since 1960s. However, the recognition mechanism by which only a few members among PYR/PYL/RCAR (PYLs) family can bind (-)-ABA remains largely unknown. Here we systematically characterized the affinity of PYLs binding to the (-)-ABA and reported the crystal structures of apo-PYL5, PYL3-(-)-ABA and PYL9-(+)-ABA. PYL5 showed the strongest binding affinity with (-)-ABA among all the PYLs. PYL9 is a stringently exclusive (+)-ABA receptor with interchangeable disulfide bonds shared by a subclass of PYLs. PYL3 is a dual receptor to both ABA enantiomers. The binding orientation and pocket of (-)-ABA in PYLs are obviously different from those of (+)-ABA. Steric hindrance and hydrophobic interaction are the two key factors in determining the stereospecificity of PYLs binding to (-)-ABA, which is further confirmed by gain-of-function and loss-of-function mutagenesis. Our results provide novel insights of the bioactivity of ABA enantiomers onto PYLs, and shed light on designing the selective ABA receptors agonists.
Structural Insights into the Abscisic Acid Stereospecificity by the ABA Receptors PYR/PYL/RCAR.,Zhang X, Jiang L, Wang G, Yu L, Zhang Q, Xin Q, Wu W, Gong Z, Chen Z PLoS One. 2013 Jul 2;8(7):e67477. doi: 10.1371/journal.pone.0067477. Print 2013. PMID:23844015[3]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Santiago J, Rodrigues A, Saez A, Rubio S, Antoni R, Dupeux F, Park SY, Marquez JA, Cutler SR, Rodriguez PL. Modulation of drought resistance by the abscisic acid receptor PYL5 through inhibition of clade A PP2Cs. Plant J. 2009 Nov;60(4):575-88. doi: 10.1111/j.1365-313X.2009.03981.x. Epub 2009 , Jul 16. PMID:19624469 doi:10.1111/j.1365-313X.2009.03981.x
- ↑ Ma Y, Szostkiewicz I, Korte A, Moes D, Yang Y, Christmann A, Grill E. Regulators of PP2C phosphatase activity function as abscisic acid sensors. Science. 2009 May 22;324(5930):1064-8. doi: 10.1126/science.1172408. Epub 2009, Apr 30. PMID:19407143 doi:10.1126/science.1172408
- ↑ Zhang X, Jiang L, Wang G, Yu L, Zhang Q, Xin Q, Wu W, Gong Z, Chen Z. Structural Insights into the Abscisic Acid Stereospecificity by the ABA Receptors PYR/PYL/RCAR. PLoS One. 2013 Jul 2;8(7):e67477. doi: 10.1371/journal.pone.0067477. Print 2013. PMID:23844015 doi:10.1371/journal.pone.0067477
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