4RNQ

Crystal structure of tobacco 5-epi-aristolochene synthase (TEAS) with anilinogeranyl diphosphate (AGPP) and geraniline


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.47 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.175 
  • R-Value Observed: 0.177 

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Ligand Structure Quality Assessment 


This is version 1.1 of the entry. See complete history


Literature

Formation of a Novel Macrocyclic Alkaloid from the Unnatural Farnesyl Diphosphate Analogue Anilinogeranyl Diphosphate by 5-Epi-Aristolochene Synthase.

Rising, K.A.Crenshaw, C.M.Koo, H.J.Subramanian, T.Chehade, K.A.Starks, C.Allen, K.D.Andres, D.A.Spielmann, H.P.Noel, J.P.Chappell, J.

(2015) ACS Chem Biol 10: 1729-1736

  • DOI: 10.1021/acschembio.5b00145
  • Primary Citation of Related Structures:  
    4RNQ

  • PubMed Abstract: 
  • As part of an effort to identify substrate analogs suitable for helping to resolve structural features important for terpene synthases, the inhibition of 5-epi-aristolochene biosynthesis from farnesyl diphosphate (FPP) by the tobacco 5-epi-aristolochene synthase incubated with anilinogeranyl diphosphate (AGPP) was examined ...

    As part of an effort to identify substrate analogs suitable for helping to resolve structural features important for terpene synthases, the inhibition of 5-epi-aristolochene biosynthesis from farnesyl diphosphate (FPP) by the tobacco 5-epi-aristolochene synthase incubated with anilinogeranyl diphosphate (AGPP) was examined. The apparent noncompetitive nature of the inhibition supported further assessment of how AGPP might be bound to crystallographic forms of the enzyme. Surprisingly, the bound form of the inhibitor appeared to have undergone a cyclization event consistent with the native mechanism associated with FPP catalysis. Biocatalytic formation of a novel 13-membered macrocyclic paracyclophane alkaloid was confirmed by high-resolution GC-MS and NMR analysis. This work provides insights into new biosynthetic means for generating novel, functionally diversified, medium-sized terpene alkaloids.


    Organizational Affiliation

    ∇Howard Hughes Medical Institute, Salk Institute, La Jolla, California 92037, United States.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
5-epi-aristolochene synthaseA550Nicotiana tabacumMutation(s): 0 
Gene Names: EAS3EAS4
EC: 4.2.3.61
UniProt
Find proteins for Q40577 (Nicotiana tabacum)
Explore Q40577 
Go to UniProtKB:  Q40577
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ40577
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 5 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
A4S
Query on A4S

Download Ideal Coordinates CCD File 
E [auth A](2E,6E)-3,7-dimethyl-8-(phenylamino)octa-2,6-dien-1-yl trihydrogen diphosphate
C16 H25 N O7 P2
HODAIPJPJAZJEY-GGQZXFEVSA-N
 Ligand Interaction
1GA
Query on 1GA

Download Ideal Coordinates CCD File 
F [auth A]Geraniline
C16 H21 N
QEYKICLOTYFCMW-QEKYNVLXSA-N
 Ligand Interaction
DPO
Query on DPO

Download Ideal Coordinates CCD File 
G [auth A]DIPHOSPHATE
O7 P2
XPPKVPWEQAFLFU-UHFFFAOYSA-J
 Ligand Interaction
ACT
Query on ACT

Download Ideal Coordinates CCD File 
H [auth A]ACETATE ION
C2 H3 O2
QTBSBXVTEAMEQO-UHFFFAOYSA-M
 Ligand Interaction
MG
Query on MG

Download Ideal Coordinates CCD File 
B [auth A],
C [auth A],
D [auth A]
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.47 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.175 
  • R-Value Observed: 0.177 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 126.75α = 90
b = 126.75β = 90
c = 124.3γ = 90
Software Package:
Software NamePurpose
Aimlessdata scaling
PHENIXrefinement
PDB_EXTRACTdata extraction
BOSdata collection
MOSFLMdata reduction
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: 2015-05-06
    Type: Initial release
  • Version 1.1: 2015-07-29
    Changes: Database references