|
|
| (One intermediate revision not shown.) |
| Line 1: |
Line 1: |
| | | | |
| | ==X-ray crystal structure of the Py13 -pyrabactin complex== | | ==X-ray crystal structure of the Py13 -pyrabactin complex== |
| - | <StructureSection load='3oji' size='340' side='right' caption='[[3oji]], [[Resolution|resolution]] 1.84Å' scene=''> | + | <StructureSection load='3oji' size='340' side='right'caption='[[3oji]], [[Resolution|resolution]] 1.84Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[3oji]] is a 2 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=3OJI OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3OJI FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[3oji]] 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=3OJI OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3OJI FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=PYV:4-BROMO-N-(PYRIDIN-2-YLMETHYL)NAPHTHALENE-1-SULFONAMIDE'>PYV</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</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]] 1.84Å</td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3klx|3klx]], [[3kl1|3kl1]]</td></tr> | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=PYV:4-BROMO-N-(PYRIDIN-2-YLMETHYL)NAPHTHALENE-1-SULFONAMIDE'>PYV</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">PYL3 ([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'>[https://proteopedia.org/fgij/fg.htm?mol=3oji FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3oji OCA], [https://pdbe.org/3oji PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3oji RCSB], [https://www.ebi.ac.uk/pdbsum/3oji PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3oji 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=3oji FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3oji OCA], [http://pdbe.org/3oji PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3oji RCSB], [http://www.ebi.ac.uk/pdbsum/3oji PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3oji ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/PYL3_ARATH PYL3_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 (By similarity). | + | [https://www.uniprot.org/uniprot/PYL3_ARATH PYL3_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 (By similarity). |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
| Line 22: |
Line 21: |
| | | | |
| | ==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: Wang, G]] | + | [[Category: Chen Z]] |
| - | [[Category: Zhang, Q]] | + | [[Category: Wang G]] |
| - | [[Category: Zhang, X]] | + | [[Category: Zhang Q]] |
| - | [[Category: Abscisic acid receptor]]
| + | [[Category: Zhang X]] |
| - | [[Category: Crystal]]
| + | |
| - | [[Category: Hormone receptor]]
| + | |
| - | [[Category: Pp2c]]
| + | |
| - | [[Category: Pyl3]]
| + | |
| - | [[Category: Pyrabactin]]
| + | |
| Structural highlights
Function
PYL3_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 (By similarity).
Publication Abstract from PubMed
Abscisic acid (ABA) controls many physiological processes and mediates adaptive responses to abiotic stresses. The ABA signaling mechanisms for abscisic acid receptors PYR/PYL/RCAR (PYLs) were reported. However, it remains unclear whether the molecular mechanisms are suitable for other PYLs. Here, complex structures of PYL3 with (+)-ABA, pyrabactin and HAB1 are reported. An unexpected trans-homodimer intermediate observed in the crystal is confirmed in solution. ABA-bound PYL3 greatly promotes the generation of monomeric PYL3, which can excessively increase the efficiency of inhibiting PP2Cs. Structure-guided biochemical experiments show that Ser195 accounts for the key intermediate. Interestingly, pyrabactin binds to PYL3 in a distinct nonproductive mode with gate closure, which sheds light on the design of agonists and antagonists for abscisic acid receptors. According to different conformations of ligand-bound PYLs, the PYLs family can be divided into three subclasses, among which the trans-dimeric subclass, represented by PYL3, reveals a distinct regulatory mechanism.
Complex Structures of the Abscisic Acid Receptor PYL3/RCAR13 Reveal a Unique Regulatory Mechanism.,Zhang X, Zhang Q, Xin Q, Yu L, Wang Z, Wu W, Jiang L, Wang G, Tian W, Deng Z, Wang Y, Liu Z, Long J, Gong Z, Chen Z Structure. 2012 May 9;20(5):780-90. PMID:22579247[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Zhang X, Zhang Q, Xin Q, Yu L, Wang Z, Wu W, Jiang L, Wang G, Tian W, Deng Z, Wang Y, Liu Z, Long J, Gong Z, Chen Z. Complex Structures of the Abscisic Acid Receptor PYL3/RCAR13 Reveal a Unique Regulatory Mechanism. Structure. 2012 May 9;20(5):780-90. PMID:22579247 doi:10.1016/j.str.2012.02.019
|
