4OIQ

Crystal structure of Thermus thermophilus transcription initiation complex soaked with GE23077 and rifampicin


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.62 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.199 
  • R-Value Observed: 0.201 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

GE23077 binds to the RNA polymerase 'i' and 'i+1' sites and prevents the binding of initiating nucleotides.

Zhang, Y.Degen, D.Ho, M.X.Sineva, E.Ebright, K.Y.Ebright, Y.W.Mekler, V.Vahedian-Movahed, H.Feng, Y.Yin, R.Tuske, S.Irschik, H.Jansen, R.Maffioli, S.Donadio, S.Arnold, E.Ebright, R.H.

(2014) Elife 3: e02450-e02450

  • DOI: 10.7554/eLife.02450
  • Primary Citation of Related Structures:  
    4MQ9, 4OIN, 4OIO, 4OIP, 4OIQ, 4OIR

  • PubMed Abstract: 
  • Using a combination of genetic, biochemical, and structural approaches, we show that the cyclic-peptide antibiotic GE23077 (GE) binds directly to the bacterial RNA polymerase (RNAP) active-center 'i' and 'i+1' nucleotide binding sites, preventing the binding of initiating nucleotides, and thereby preventing transcription initiation ...

    Using a combination of genetic, biochemical, and structural approaches, we show that the cyclic-peptide antibiotic GE23077 (GE) binds directly to the bacterial RNA polymerase (RNAP) active-center 'i' and 'i+1' nucleotide binding sites, preventing the binding of initiating nucleotides, and thereby preventing transcription initiation. The target-based resistance spectrum for GE is unusually small, reflecting the fact that the GE binding site on RNAP includes residues of the RNAP active center that cannot be substituted without loss of RNAP activity. The GE binding site on RNAP is different from the rifamycin binding site. Accordingly, GE and rifamycins do not exhibit cross-resistance, and GE and a rifamycin can bind simultaneously to RNAP. The GE binding site on RNAP is immediately adjacent to the rifamycin binding site. Accordingly, covalent linkage of GE to a rifamycin provides a bipartite inhibitor having very high potency and very low susceptibility to target-based resistance. DOI: http://dx.doi.org/10.7554/eLife.02450.001.


    Organizational Affiliation

    Waksman Institute, Rutgers University, Piscataway, United States.



Macromolecules

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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
DNA-directed RNA polymerase subunit alphaA, B315Thermus thermophilus HB8Mutation(s): 0 
Gene Names: rpoATTHA1664
EC: 2.7.7.6
UniProt
Find proteins for Q5SHR6 (Thermus thermophilus (strain ATCC 27634 / DSM 579 / HB8))
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
DNA-directed RNA polymerase subunit betaC1119Thermus thermophilus HB8Mutation(s): 0 
Gene Names: rpoBTTHA1813
EC: 2.7.7.6
UniProt
Find proteins for Q8RQE9 (Thermus thermophilus (strain ATCC 27634 / DSM 579 / HB8))
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
DNA-directed RNA polymerase subunit beta'D1524Thermus thermophilus HB8Mutation(s): 0 
Gene Names: rpoCTTHA1812
EC: 2.7.7.6
UniProt
Find proteins for Q8RQE8 (Thermus thermophilus (strain ATCC 27634 / DSM 579 / HB8))
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
DNA-directed RNA polymerase subunit omegaE99Thermus thermophilus HB8Mutation(s): 0 
Gene Names: rpoZTTHA1561
EC: 2.7.7.6
UniProt
Find proteins for Q8RQE7 (Thermus thermophilus (strain ATCC 27634 / DSM 579 / HB8))
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
DNA directed RNA polymerase sigma factor AF443Thermus thermophilus HB8Mutation(s): 0 
Gene Names: rpoDTTHA0532sigA
UniProt
Find proteins for Q5SKW1 (Thermus thermophilus (strain ATCC 27634 / DSM 579 / HB8))
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Entity ID: 8
MoleculeChainsSequence LengthOrganismDetailsImage
GE23077I7Actinomadura sp.Mutation(s): 0 
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  • Reference Sequence
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Entity ID: 6
MoleculeChainsLengthOrganismImage
5'-D(*CP*CP*T*GP*CP*AP*TP*CP*CP*GP*TP*GP*AP*GP*TP*CP*GP*AP*GP*GP*G)-3'G21N/A
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Entity ID: 7
MoleculeChainsLengthOrganismImage
5'-D(*TP*AP*TP*AP*AP*TP*GP*GP*GP*AP*GP*CP*TP*GP*TP*CP*AP*CP*GP*GP*AP*TP*GP*CP*AP*GP*G)-3'H27N/A
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  • Reference Sequence
Small Molecules
Modified Residues  2 Unique
IDChainsTypeFormula2D DiagramParent
2RA
Query on 2RA
ID-PEPTIDE LINKINGC3 H8 N2 O2ALA
FGL
Query on FGL
IL-PEPTIDE LINKINGC3 H5 N O4GLY
Biologically Interesting Molecules (External Reference) 1 Unique
Entity ID: 8
IDChainsNameType/Class2D Diagram3D Interactions
PRD_001181
Query on PRD_001181
IGE23077Cyclic peptide / Antibiotic, Antimicrobial Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.62 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.199 
  • R-Value Observed: 0.201 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 184.84α = 90
b = 104.183β = 98.52
c = 295.319γ = 90
Software Package:
Software NamePurpose
ADSCdata collection
MOLREPphasing
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-05-07
    Type: Initial release
  • Version 1.1: 2014-05-14
    Changes: Non-polymer description