4P3N

Structural Basis for Full-Spectrum Inhibition of Threonyl-tRNA Synthetase by Borrelidin 1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.228 
  • R-Value Observed: 0.229 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Structural basis for full-spectrum inhibition of translational functions on a tRNA synthetase.

Fang, P.Yu, X.Jeong, S.J.Mirando, A.Chen, K.Chen, X.Kim, S.Francklyn, C.S.Guo, M.

(2015) Nat Commun 6: 6402-6402

  • DOI: 10.1038/ncomms7402
  • Primary Citation of Related Structures:  
    4P3O, 4P3P, 4P3N

  • PubMed Abstract: 
  • The polyketide natural product borrelidin displays antibacterial, antifungal, antimalarial, anticancer, insecticidal and herbicidal activities through the selective inhibition of threonyl-tRNA synthetase (ThrRS). How borrelidin simultaneously attenua ...

    The polyketide natural product borrelidin displays antibacterial, antifungal, antimalarial, anticancer, insecticidal and herbicidal activities through the selective inhibition of threonyl-tRNA synthetase (ThrRS). How borrelidin simultaneously attenuates bacterial growth and suppresses a variety of infections in plants and animals is not known. Here we show, using X-ray crystal structures and functional analyses, that a single molecule of borrelidin simultaneously occupies four distinct subsites within the catalytic domain of bacterial and human ThrRSs. These include the three substrate-binding sites for amino acid, ATP and tRNA associated with aminoacylation, and a fourth 'orthogonal' subsite created as a consequence of binding. Thus, borrelidin competes with all three aminoacylation substrates, providing a potent and redundant mechanism to inhibit ThrRS during protein synthesis. These results highlight a surprising natural design to achieve the quadrivalent inhibition of translation through a highly conserved family of enzymes.


    Organizational Affiliation

    Department of Cancer Biology, Scripps Research Institute, Scripps Florida, 130 Scripps Way, Jupiter, Florida 33458, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Threonine--tRNA ligase, cytoplasmicABCD415Homo sapiensMutation(s): 0 
Gene Names: TARSTARS1
EC: 6.1.1.3
Find proteins for P26639 (Homo sapiens)
Explore P26639 
Go to UniProtKB:  P26639
NIH Common Fund Data Resources
PHAROS  P26639
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
2CR
Query on 2CR

Download CCD File 
A, B, C, D
(1R,2R)-2-[(2S,4E,6E,8R,9S,11R,13S,15S,16S)-7-cyano-8,16-dihydroxy-9,11,13,15-tetramethyl-18-oxooxacyclooctadeca-4,6-dien-2-yl]cyclopentanecarboxylic acid
C28 H43 N O6
OJCKRNPLOZHAOU-RSXXJMTFSA-N
 Ligand Interaction
ZN
Query on ZN

Download CCD File 
A, B, C, D
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.228 
  • R-Value Observed: 0.229 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 63.87α = 86.99
b = 78β = 83.32
c = 118.05γ = 84.39
Software Package:
Software NamePurpose
SCALAdata scaling
PDB_EXTRACTdata extraction
PHENIXrefinement

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesGM100136
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesGM106134

Revision History 

  • Version 1.0: 2015-03-11
    Type: Initial release
  • Version 1.1: 2015-04-15
    Changes: Database references
  • Version 1.2: 2017-09-27
    Changes: Author supporting evidence, Derived calculations, Other, Refinement description, Source and taxonomy
  • Version 1.3: 2019-12-25
    Changes: Author supporting evidence