6OP5

Crystal Structure of Piper methysticum Styrylpyrone Synthase 1 in complex with p-coumaroyl-CoA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.204 
  • R-Value Observed: 0.211 

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This is version 1.2 of the entry. See complete history


Literature

The biosynthetic origin of psychoactive kavalactones in kava.

Pluskal, T.Torrens-Spence, M.P.Fallon, T.R.De Abreu, A.Shi, C.H.Weng, J.K.

(2019) Nat Plants 5: 867-878

  • DOI: https://doi.org/10.1038/s41477-019-0474-0
  • Primary Citation of Related Structures:  
    6CQB, 6NBR, 6OP5

  • PubMed Abstract: 

    Kava (Piper methysticum) is an ethnomedicinal shrub native to the Polynesian islands with well-established anxiolytic and analgesic properties. Its main psychoactive principles, kavalactones, form a unique class of polyketides that interact with the human central nervous system through mechanisms distinct from those of conventional psychiatric drugs. However, an unknown biosynthetic machinery and difficulty in chemical synthesis hinder the therapeutic use of kavalactones. In addition, kava also produces flavokavains, which are chalconoids with anticancer properties structurally related to kavalactones. Here, we report de novo elucidation of the key enzymes of the kavalactone and flavokavain biosynthetic network. We present the structural basis for the evolutionary development of a pair of paralogous styrylpyrone synthases that establish the kavalactone scaffold and the catalytic mechanism of a regio- and stereo-specific kavalactone reductase that produces a subset of chiral kavalactones. We further demonstrate the feasibility of engineering styrylpyrone production in heterologous hosts, thus opening a way to develop kavalactone-based non-addictive psychiatric therapeutics through synthetic biology.


  • Organizational Affiliation

    Whitehead Institute for Biomedical Research, Cambridge, MA, USA.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Styrylpyrone synthase 1
A, B, D, E, F
397Piper methysticumMutation(s): 0 
UniProt
Find proteins for A0A384E132 (Piper methysticum)
Explore A0A384E132 
Go to UniProtKB:  A0A384E132
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A384E132
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Styrylpyrone synthase 1397Piper methysticumMutation(s): 0 
UniProt
Find proteins for A0A384E132 (Piper methysticum)
Explore A0A384E132 
Go to UniProtKB:  A0A384E132
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A384E132
Sequence Annotations
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  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
60F
Query on 60F
C
L-PEPTIDE LINKINGC12 H13 N O4 SCYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.204 
  • R-Value Observed: 0.211 
  • Space Group: P 31
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 164.402α = 90
b = 164.402β = 90
c = 87.122γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
iMOSFLMdata reduction
SCALAdata scaling
PHENIXphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2019-06-12
    Type: Initial release
  • Version 1.1: 2019-08-07
    Changes: Data collection, Database references
  • Version 1.2: 2019-08-21
    Changes: Data collection, Database references