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| | ==Crystal structure of abscisic acid bound PYL2 in complex with type 2C protein phosphatase ABI2== | | ==Crystal structure of abscisic acid bound PYL2 in complex with type 2C protein phosphatase ABI2== |
| - | <StructureSection load='3ujl' size='340' side='right' caption='[[3ujl]], [[Resolution|resolution]] 2.50Å' scene=''> | + | <StructureSection load='3ujl' size='340' side='right'caption='[[3ujl]], [[Resolution|resolution]] 2.50Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[3ujl]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Arabidopsis_thaliana Arabidopsis thaliana]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3UJL OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3UJL FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[3ujl]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Arabidopsis_thaliana Arabidopsis thaliana]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3UJL OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3UJL FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=A8S:(2Z,4E)-5-[(1S)-1-HYDROXY-2,6,6-TRIMETHYL-4-OXOCYCLOHEX-2-EN-1-YL]-3-METHYLPENTA-2,4-DIENOIC+ACID'>A8S</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</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]] 2.5Å</td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3ujg|3ujg]], [[3ujk|3ujk]]</td></tr>
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=A8S:(2Z,4E)-5-[(1S)-1-HYDROXY-2,6,6-TRIMETHYL-4-OXOCYCLOHEX-2-EN-1-YL]-3-METHYLPENTA-2,4-DIENOIC+ACID'>A8S</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">PYL2, RCAR14, At2g26040, T19L18.15 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=3702 Arabidopsis thaliana]), ABI2, At5g57050, MHM17.19 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=3702 Arabidopsis thaliana])</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=3ujl FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3ujl OCA], [https://pdbe.org/3ujl PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3ujl RCSB], [https://www.ebi.ac.uk/pdbsum/3ujl PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3ujl ProSAT]</span></td></tr> |
| - | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Phosphoprotein_phosphatase Phosphoprotein phosphatase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.3.16 3.1.3.16] </span></td></tr>
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| - | <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=3ujl FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3ujl OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3ujl RCSB], [http://www.ebi.ac.uk/pdbsum/3ujl PDBsum]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/PYL2_ARATH PYL2_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.<ref>PMID:19898420</ref> <ref>PMID:19893533</ref> [[http://www.uniprot.org/uniprot/P2C77_ARATH P2C77_ARATH]] Repressor of the abscisic acid (ABA) signaling pathway that regulates numerous ABA responses, such as stomatal closure, osmotic water permeability of the plasma membrane (Pos), high light stress, response to glucose, seed germination and inhibition of vegetative growth. During the stomatal closure regulation, modulates the inward calcium-channel permeability as well as H(2)O(2) and oxidative burst in response to ABA and dehydration. Controls negatively fibrillin that is involved in mediating ABA-induced photoprotection. May be implicated in ABA content regulation. Involved in acquired thermotolerance of root growth and seedling survival. Required for the Erwinia amylovora harpin-induced (HrpN) drought tolerance. Involved in the hydrotropic response.<ref>PMID:9165752</ref> <ref>PMID:12232276</ref> <ref>PMID:8787023</ref> <ref>PMID:9108297</ref> <ref>PMID:9090884</ref> <ref>PMID:9276963</ref> <ref>PMID:10488243</ref> <ref>PMID:10950871</ref> <ref>PMID:10872217</ref> <ref>PMID:11701885</ref> <ref>PMID:11208021</ref> <ref>PMID:11707572</ref> <ref>PMID:12194854</ref> <ref>PMID:12447533</ref> <ref>PMID:12119381</ref> <ref>PMID:14596925</ref> <ref>PMID:12609042</ref> <ref>PMID:14576281</ref> <ref>PMID:15599761</ref> <ref>PMID:15923322</ref> <ref>PMID:16339784</ref> <ref>PMID:16571665</ref> <ref>PMID:18278579</ref> | + | [https://www.uniprot.org/uniprot/PYL2_ARATH PYL2_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.<ref>PMID:19898420</ref> <ref>PMID:19893533</ref> |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> |
| | </div> | | </div> |
| | + | <div class="pdbe-citations 3ujl" style="background-color:#fffaf0;"></div> |
| | | | |
| | ==See Also== | | ==See Also== |
| - | *[[ABA Signaling Pathway|ABA Signaling Pathway]] | + | *[[Abscisic acid receptor 3D structures|Abscisic acid receptor 3D structures]] |
| - | *[[ABA-regulated Protein Phosphatase 2C|ABA-regulated Protein Phosphatase 2C]]
| + | *[[Protein phosphatase 3D structures|Protein phosphatase 3D structures]] |
| - | *[[PYR/PYL/RCAR family of ABA receptors|PYR/PYL/RCAR family of ABA receptors]]
| + | |
| - | *[[Protein phosphatase|Protein phosphatase]] | + | |
| | == References == | | == References == |
| | <references/> | | <references/> |
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| | </StructureSection> | | </StructureSection> |
| | [[Category: Arabidopsis thaliana]] | | [[Category: Arabidopsis thaliana]] |
| - | [[Category: Phosphoprotein phosphatase]] | + | [[Category: Large Structures]] |
| - | [[Category: Brunzelle, J S]] | + | [[Category: Brunzelle JS]] |
| - | [[Category: He, Y]] | + | [[Category: He Y]] |
| - | [[Category: Kovach, A]] | + | [[Category: Kovach A]] |
| - | [[Category: Li, J]] | + | [[Category: Li J]] |
| - | [[Category: Melcher, K]] | + | [[Category: Melcher K]] |
| - | [[Category: Ng, L M]] | + | [[Category: Ng L-M]] |
| - | [[Category: Soon, F F]] | + | [[Category: Soon F-F]] |
| - | [[Category: Suino-Powell, K M]] | + | [[Category: Suino-Powell KM]] |
| - | [[Category: Tan, M H.E]] | + | [[Category: Tan MHE]] |
| - | [[Category: Xu, H E]] | + | [[Category: Xu HE]] |
| - | [[Category: Xu, Y]] | + | [[Category: Xu Y]] |
| - | [[Category: Zhou, X E]] | + | [[Category: Zhou XE]] |
| - | [[Category: Aba signaling]]
| + | |
| - | [[Category: Abi2]]
| + | |
| - | [[Category: Abscisic receptor]]
| + | |
| - | [[Category: Protein phosphatase 2c]]
| + | |
| - | [[Category: Pyl2]]
| + | |
| - | [[Category: Signaling protein]]
| + | |
| Structural highlights
Function
PYL2_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.[1] [2]
Publication Abstract from PubMed
Abscisic acid (ABA) is an essential hormone for plants to survive environmental stresses. At the center of the ABA signaling network is a subfamily of type 2C protein phosphatases (PP2Cs), which form exclusive interactions with ABA receptors and subfamily 2 Snfl-related kinase (SnRK2s). Here, we report a SnRK2-PP2C complex structure, which reveals marked similarity in PP2C recognition by SnRK2 and ABA receptors. In the complex, the kinase activation loop docks into the active site of PP2C, while the conserved ABA-sensing tryptophan of PP2C inserts into the kinase catalytic cleft, thus mimicking receptor-PP2C interactions. These structural results provide a simple mechanism that directly couples ABA binding to SnRK2 kinase activation and highlight a new paradigm of kinase-phosphatase regulation through mutual packing of their catalytic sites.
Molecular mimicry regulates ABA signaling by SnRK2 kinases and PP2C phosphatases.,Soon FF, Ng LM, Zhou XE, West GM, Kovach A, Tan MH, Suino-Powell KM, He Y, Xu Y, Chalmers MJ, Brunzelle JS, Zhang H, Yang H, Jiang H, Li J, Yong EL, Cutler S, Zhu JK, Griffin PR, Melcher K, Xu HE Science. 2012 Jan 6;335(6064):85-8. Epub 2011 Nov 24. PMID:22116026[3]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Melcher K, Ng LM, Zhou XE, Soon FF, Xu Y, Suino-Powell KM, Park SY, Weiner JJ, Fujii H, Chinnusamy V, Kovach A, Li J, Wang Y, Li J, Peterson FC, Jensen DR, Yong EL, Volkman BF, Cutler SR, Zhu JK, Xu HE. A gate-latch-lock mechanism for hormone signalling by abscisic acid receptors. Nature. 2009 Dec 3;462(7273):602-8. PMID:19898420 doi:10.1038/nature08613
- ↑ Yin P, Fan H, Hao Q, Yuan X, Wu D, Pang Y, Yan C, Li W, Wang J, Yan N. Structural insights into the mechanism of abscisic acid signaling by PYL proteins. Nat Struct Mol Biol. 2009 Dec;16(12):1230-6. Epub 2009 Nov 5. PMID:19893533 doi:10.1038/nsmb.1730
- ↑ Soon FF, Ng LM, Zhou XE, West GM, Kovach A, Tan MH, Suino-Powell KM, He Y, Xu Y, Chalmers MJ, Brunzelle JS, Zhang H, Yang H, Jiang H, Li J, Yong EL, Cutler S, Zhu JK, Griffin PR, Melcher K, Xu HE. Molecular mimicry regulates ABA signaling by SnRK2 kinases and PP2C phosphatases. Science. 2012 Jan 6;335(6064):85-8. Epub 2011 Nov 24. PMID:22116026 doi:10.1126/science.1215106
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