2MBZ

Structural Basis of a Thiopeptide Antibiotic Multidrug Resistance System from Streptomyces lividans:Promothiocin A in Complex with TipAS


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structural basis and dynamics of multidrug recognition in a minimal bacterial multidrug resistance system.

Habazettl, J.Allan, M.Jensen, P.R.Sass, H.J.Thompson, C.J.Grzesiek, S.

(2014) Proc Natl Acad Sci U S A 111: E5498-E5507

  • DOI: 10.1073/pnas.1412070111
  • Primary Citation of Related Structures:  
    2MBZ, 2MC0

  • PubMed Abstract: 
  • TipA is a transcriptional regulator found in diverse bacteria. It constitutes a minimal autoregulated multidrug resistance system against numerous thiopeptide antibiotics. Here we report the structures of its drug-binding domain TipAS in complexes with p ...

    TipA is a transcriptional regulator found in diverse bacteria. It constitutes a minimal autoregulated multidrug resistance system against numerous thiopeptide antibiotics. Here we report the structures of its drug-binding domain TipAS in complexes with promothiocin A and nosiheptide, and a model of the thiostrepton complex. Drug binding induces a large transition from a partially unfolded to a globin-like structure. The structures rationalize the mechanism of promiscuous, yet specific, drug recognition: (i) a four-ring motif present in all known TipA-inducing antibiotics is recognized specifically by conserved TipAS amino acids; and (ii) the variable part of the antibiotic is accommodated within a flexible cleft that rigidifies upon drug binding. Remarkably, the identified four-ring motif is also the major interacting part of the antibiotic with the ribosome. Hence the TipA multidrug resistance mechanism is directed against the same chemical motif that inhibits protein synthesis. The observed identity of chemical motifs responsible for antibiotic function and resistance may be a general principle and could help to better define new leads for antibiotics.


    Organizational Affiliation

    Focal Area Structural Biology and Biophysics, Biozentrum, University of Basel, CH-4056 Basel, Switzerland; and stephan.grzesiek@unibas.ch.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
HTH-type transcriptional activator TipA A144Streptomyces lividansMutation(s): 0 
Gene Names: tipA
Find proteins for P0A4T9 (Streptomyces lividans)
Explore P0A4T9 
Go to UniProtKB:  P0A4T9
Protein Feature View
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  • Reference Sequence
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Promothiocin A B12synthetic constructMutation(s): 0 
Protein Feature View
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  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
BB9
Query on BB9
BPEPTIDE LINKINGC3 H5 N O2 SCYS
Biologically Interesting Molecules (External Reference) 1 Unique
Entity ID: 2
IDChainsNameType/Class2D Diagram3D Interactions
PRD_001255
Query on PRD_001255
BPromothiocin AThiopeptide /  Antibiotic

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Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the lowest energy 
  • OLDERADO: 2MBZ Olderado

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-12-10
    Type: Initial release
  • Version 1.1: 2018-10-17
    Changes: Data collection, Database references, Source and taxonomy, Structure summary