4FN5

ELONGATION FACTOR G 1 (PSEUDOMONAS AERUGINOSA) IN COMPLEX WITH Argyrin B


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.300 
  • R-Value Work: 0.202 
  • R-Value Observed: 0.207 

wwPDB Validation   3D Report Full Report



Literature

Identification of elongation factor g as the conserved cellular target of argyrin B.

Nyfeler, B.Hoepfner, D.Palestrant, D.Kirby, C.A.Whitehead, L.Yu, R.Deng, G.Caughlan, R.E.Woods, A.L.Jones, A.K.Barnes, S.W.Walker, J.R.Gaulis, S.Hauy, E.Brachmann, S.M.Krastel, P.Studer, C.Riedl, R.Estoppey, D.Aust, T.Movva, N.R.Wang, Z.Salcius, M.Michaud, G.A.McAllister, G.Murphy, L.O.Tallarico, J.A.Wilson, C.J.Dean, C.R.

(2012) PLoS One 7: e42657-e42657

  • DOI: 10.1371/journal.pone.0042657
  • Primary Citation of Related Structures:  
    4FN5

  • PubMed Abstract: 
  • Argyrins, produced by myxobacteria and actinomycetes, are cyclic octapeptides with antibacterial and antitumor activity. Here, we identify elongation factor G (EF-G) as the cellular target of argyrin B in bacteria, via resistant mutant selection and ...

    Argyrins, produced by myxobacteria and actinomycetes, are cyclic octapeptides with antibacterial and antitumor activity. Here, we identify elongation factor G (EF-G) as the cellular target of argyrin B in bacteria, via resistant mutant selection and whole genome sequencing, biophysical binding studies and crystallography. Argyrin B binds a novel allosteric pocket in EF-G, distinct from the known EF-G inhibitor antibiotic fusidic acid, revealing a new mode of protein synthesis inhibition. In eukaryotic cells, argyrin B was found to target mitochondrial elongation factor G1 (EF-G1), the closest homologue of bacterial EF-G. By blocking mitochondrial translation, argyrin B depletes electron transport components and inhibits the growth of yeast and tumor cells. Further supporting direct inhibition of EF-G1, expression of an argyrin B-binding deficient EF-G1 L693Q variant partially rescued argyrin B-sensitivity in tumor cells. In summary, we show that argyrin B is an antibacterial and cytotoxic agent that inhibits the evolutionarily conserved target EF-G, blocking protein synthesis in bacteria and mitochondrial translation in yeast and mammalian cells.


    Organizational Affiliation

    Developmental and Molecular Pathways, Novartis Institutes for BioMedical Research, Cambridge, Massachussetts, United States of America.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Elongation factor G 1A709Pseudomonas aeruginosa PAO1Mutation(s): 0 
Gene Names: fusAfusA1PA4266
Find proteins for Q9HWD2 (Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1))
Explore Q9HWD2 
Go to UniProtKB:  Q9HWD2
Protein Feature View
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  • Reference Sequence
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Argyrin BB8Actinoplanes sp.Mutation(s): 0 
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Modified Residues  4 Unique
IDChainsTypeFormula2D DiagramParent
0UO
Query on 0UO
BPEPTIDE-LIKEC12 H14 N2 O3TRP
BB9
Query on BB9
BPEPTIDE LINKINGC3 H5 N O2 SCYS
DHA
Query on DHA
BPEPTIDE LINKINGC3 H5 N O2SER
SAR
Query on SAR
BPEPTIDE LINKINGC3 H7 N O2GLY
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.300 
  • R-Value Work: 0.202 
  • R-Value Observed: 0.207 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 125.78α = 90
b = 88.1β = 107.91
c = 74.32γ = 90
Software Package:
Software NamePurpose
APSdata collection
PHASERphasing
BUSTERrefinement

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-09-26
    Type: Initial release