4N0G

Crystal Structure of PYL13-PP2CA complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.38 Å
  • R-Value Free: 0.245 
  • R-Value Work: 0.211 
  • R-Value Observed: 0.212 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Molecular basis for the selective and ABA-independent inhibition of PP2CA by PYL13

Li, W.Wang, L.Sheng, X.Yan, C.Zhou, R.Hang, J.Yin, P.Yan, N.

(2013) Cell Res 23: 1369-1379

  • DOI: 10.1038/cr.2013.143
  • Primary Citation of Related Structures:  
    4N0G

  • PubMed Abstract: 
  • PYR1/PYL/RCAR family proteins (PYLs) are well-characterized abscisic acid (ABA) receptors. Among the 14 PYL members in Arabidopsis thaliana, PYL13 is ABA irresponsive and its function has remained elusive. Here, we show that PYL13 selectively inhibits the phosphatase activity of PP2CA independent of ABA ...

    PYR1/PYL/RCAR family proteins (PYLs) are well-characterized abscisic acid (ABA) receptors. Among the 14 PYL members in Arabidopsis thaliana, PYL13 is ABA irresponsive and its function has remained elusive. Here, we show that PYL13 selectively inhibits the phosphatase activity of PP2CA independent of ABA. The crystal structure of PYL13-PP2CA complex, which was determined at 2.4 Å resolution, elucidates the molecular basis for the specific recognition between PP2CA and PYL13. In addition to the canonical interactions between PYLs and PP2Cs, an extra interface is identified involving an element in the vicinity of a previously uncharacterized CCCH zinc-finger (ZF) motif in PP2CA. Sequence blast identified another 56 ZF-containing PP2Cs, all of which are from plants. The structure also reveals the molecular determinants for the ABA irresponsiveness of PYL13. Finally, biochemical analysis suggests that PYL13 may hetero-oligomerize with PYL10. These two PYLs antagonize each other in their respective ABA-independent inhibitions of PP2Cs. The biochemical and structural studies provide important insights into the function of PYL13 in the stress response of plant and set up a foundation for future biotechnological applications of PYL13.


    Organizational Affiliation

    1] State Key Laboratory of Bio-membrane and Membrane Biotechnology, Tsinghua University, Beijing 100084, China [2] Center for Structural Biology, School of Medicine and School of Life Sciences, Tsinghua University, Beijing 100084, China [3] Tsinghua-Peking Center for Life Sciences, Tsinghua University, Beijing 100084, China.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Protein phosphatase 2C 37A, B328Arabidopsis thalianaMutation(s): 0 
Gene Names: PP2CAAHG3At3g11410F24K9.8
EC: 3.1.3.16
UniProt
Find proteins for P49598 (Arabidopsis thaliana)
Explore P49598 
Go to UniProtKB:  P49598
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP49598
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Abscisic acid receptor PYL13C, D164Arabidopsis thalianaMutation(s): 0 
Gene Names: PYL13RCAR7At4g18620F28A21.30
UniProt
Find proteins for Q9SN51 (Arabidopsis thaliana)
Explore Q9SN51 
Go to UniProtKB:  Q9SN51
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9SN51
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.38 Å
  • R-Value Free: 0.245 
  • R-Value Work: 0.211 
  • R-Value Observed: 0.212 
  • Space Group: P 3
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 111.383α = 90
b = 111.383β = 90
c = 70.41γ = 120
Software Package:
Software NamePurpose
ADSCdata collection
PHASERphasing
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-11-13
    Type: Initial release
  • Version 1.1: 2013-12-18
    Changes: Database references