3KRC

Mint heterotetrameric geranyl pyrophosphate synthase in complex with IPP


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.192 
  • R-Value Observed: 0.225 

Starting Model: experimental
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Ligand Structure Quality Assessment 


This is version 1.4 of the entry. See complete history


Literature

Structure of a heterotetrameric geranyl pyrophosphate synthase from mint (Mentha piperita) reveals intersubunit regulation

Chang, T.-H.Hsieh, F.-L.Ko, T.-P.Teng, K.-H.Liang, P.-H.Wang, A.H.-J.

(2010) Plant Cell 22: 454-467

  • DOI: https://doi.org/10.1105/tpc.109.071738
  • Primary Citation of Related Structures:  
    3KRA, 3KRC, 3KRF, 3KRO, 3KRP

  • PubMed Abstract: 

    Terpenes (isoprenoids), derived from isoprenyl pyrophosphates, are versatile natural compounds that act as metabolism mediators, plant volatiles, and ecological communicators. Divergent evolution of homomeric prenyltransferases (PTSs) has allowed PTSs to optimize their active-site pockets to achieve catalytic fidelity and diversity. Little is known about heteromeric PTSs, particularly the mechanisms regulating formation of specific products. Here, we report the crystal structure of the (LSU . SSU)(2)-type (LSU/SSU = large/small subunit) heterotetrameric geranyl pyrophosphate synthase (GPPS) from mint (Mentha piperita). The LSU and SSU of mint GPPS are responsible for catalysis and regulation, respectively, and this SSU lacks the essential catalytic amino acid residues found in LSU and other PTSs. Whereas no activity was detected for individually expressed LSU or SSU, the intact (LSU . SSU)(2) tetramer produced not only C(10)-GPP at the beginning of the reaction but also C(20)-GGPP (geranylgeranyl pyrophosphate) at longer reaction times. The activity for synthesizing C(10)-GPP and C(20)-GGPP, but not C(15)-farnesyl pyrophosphate, reflects a conserved active-site structure of the LSU and the closely related mustard (Sinapis alba) homodimeric GGPPS. Furthermore, using a genetic complementation system, we showed that no C(20)-GGPP is produced by the mint GPPS in vivo. Presumably through protein-protein interactions, the SSU remodels the active-site cavity of LSU for synthesizing C(10)-GPP, the precursor of volatile C(10)-monoterpenes.


  • Organizational Affiliation

    Institute of Biological Chemistry, Academia Sinica, Taipei 115, Taiwan. r93b46009@ntu.edu.tw


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Geranyl diphosphate synthase large subunit
A, D
295Mentha x piperitaMutation(s): 0 
Gene Names: GPPS Large Subunit
EC: 2.5.1.1
UniProt
Find proteins for Q9SBR3 (Mentha piperita)
Explore Q9SBR3 
Go to UniProtKB:  Q9SBR3
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9SBR3
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Geranyl diphosphate synthase small subunit
B, C
274Mentha x piperitaMutation(s): 0 
Gene Names: GPPS Small subunit
EC: 2.5.1.1
UniProt
Find proteins for Q9SBR4 (Mentha piperita)
Explore Q9SBR4 
Go to UniProtKB:  Q9SBR4
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9SBR4
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.192 
  • R-Value Observed: 0.225 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 54.121α = 90
b = 108.97β = 90
c = 182.747γ = 90
Software Package:
Software NamePurpose
CNSrefinement
PDB_EXTRACTdata extraction
HKL-2000data collection
DENZOdata reduction
SCALEPACKdata scaling
HKL-2000data scaling
CNSphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2010-02-23
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2014-02-12
    Changes: Database references
  • Version 1.3: 2017-11-01
    Changes: Refinement description
  • Version 1.4: 2023-11-01
    Changes: Data collection, Database references, Derived calculations, Refinement description