View source for 5gwo


==Crystal structure of RCAR3:PP2C S265F/I267M with (+)-ABA==
<StructureSection load='5gwo' size='340' side='right'caption='[[5gwo]], [[Resolution|resolution]] 2.82&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[5gwo]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Oryza_sativa Oryza sativa] and [https://en.wikipedia.org/wiki/Oryza_sativa_Japonica_Group Oryza sativa Japonica Group]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5GWO OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5GWO FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.816&#8491;</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='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=5gwo FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5gwo OCA], [https://pdbe.org/5gwo PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5gwo RCSB], [https://www.ebi.ac.uk/pdbsum/5gwo PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5gwo ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/P2C50_ORYSJ P2C50_ORYSJ] 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Abscisic acid (ABA) signaling pathway is regulated by Clade A type 2C protein phosphatases (PP2CAs) in plant. In the presence of ABA, PP2Cs release stress/ABA-activated protein kinases by binding to ABA-bound receptors (PYL/RCARs) for activation. Although the wedging tryptophan in PP2Cs is critical in the interaction with PYL/RCARs in Arabidopsis and rice, it remains elusive how other interface regions are involved in the interaction. Here, we identified a conserved region on PP2Cs, termed VxGPhiL motif, that modulates the interaction with PYL/RCARs through its second and forth residues. The effects of the second and forth residues on the interaction of OsPP2C50 with several OsPYL/RCAR proteins were investigated by systematic mutagenesis. Investigating the interaction between OsPP2C50 and OsPYL/RCAR3, one OsPP2C50 mutant, VFGML ("FM") mutant, lowered the affinity by approximately 15-fold. Comparison of the crystal structures of OsPP2C50:ABA:OsPYL/RCAR3 wild-type and FM mutant revealed local conformational changes near the VxGPhiL motif, further supported by hydrogen-deuterium exchange mass spectrometry. In rice protoplasts, ABA signaling was altered by mutations in the VxGPhiL motif. Transgenic Arabidopsis plants overexpressing OsPP2C50 and OsPP2C50FM changed ABA sensitivity, validating the in vitro results. Taken together, the VxGPhiL motif of PP2Cs seems to modulate the affinity to PYL/RCARs with potentials to alter the ABA signaling, leading to the differential sensitivity to ABA in planta.

Modulation of ABA signaling by altering VxGPhiL motif of PP2Cs in Oryza sativa.,Han S, Min MK, Lee SY, Lim CW, Bhatnagar N, Lee Y, Shin D, Chung KY, Lee SC, Kim BG, Lee S Mol Plant. 2017 Aug 18. pii: S1674-2052(17)30233-2. doi:, 10.1016/j.molp.2017.08.003. PMID:28827170<ref>PMID:28827170</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 5gwo" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Oryza sativa]]
[[Category: Oryza sativa Japonica Group]]
[[Category: Han S]]
[[Category: Lee S]]