6QYR

Solution NMR of synthetic analogues of nisin and mutacin ring A and ring B - Mutacin I Ring B, minor conformer


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 15 
  • 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

Molecular Recognition of Lipid II by Lantibiotics: Synthesis and Conformational Studies of Analogues of Nisin and Mutacin Rings A and B.

Dickman, R.Mitchell, S.A.Figueiredo, A.M.Hansen, D.F.Tabor, A.B.

(2019) J Org Chem 84: 11493-11512

  • DOI: 10.1021/acs.joc.9b01253
  • Primary Citation of Related Structures:  
    6QTF, 6QYW, 6QYV, 6QYS, 6QYR, 6QYU, 6QYT, 6QM1

  • PubMed Abstract: 
  • In response to the growing threat posed by antibiotic-resistant bacterial strains, extensive research is currently focused on developing antimicrobial agents that target lipid II, a vital precursor in the biosynthesis of bacterial cell walls. The lantibiotic nisin and related peptides display unique and highly selective binding to lipid II ...

    In response to the growing threat posed by antibiotic-resistant bacterial strains, extensive research is currently focused on developing antimicrobial agents that target lipid II, a vital precursor in the biosynthesis of bacterial cell walls. The lantibiotic nisin and related peptides display unique and highly selective binding to lipid II. A key feature of the nisin-lipid II interaction is the formation of a cage-like complex between the pyrophosphate moiety of lipid II and the two thioether-bridged rings, rings A and B, at the N-terminus of nisin. To understand the important structural factors underlying this highly selective molecular recognition, we have used solid-phase peptide synthesis to prepare individual ring A and B structures from nisin, the related lantibiotic mutacin, and synthetic analogues. Through NMR studies of these rings, we have demonstrated that ring A is preorganized to adopt the correct conformation for binding lipid II in solution and that individual amino acid substitutions in ring A have little effect on the conformation. We have also analyzed the turn structures adopted by these thioether-bridged peptides and show that they do not adopt the tight α-turn or β-turn structures typically found in proteins.


    Related Citations: 
    • A chemical biology approach to understanding molecular recognition of lipid II by nisin: Solid-phase synthesis and NMR ensemble analysis of nisin(1-12) and a synthetic analogue.
      Dickman, R., Danelius, E., Mitchell, S.A., Hansen, D.F., Erdelyi, M., Tabor, A.B.
      () To be published --: --

    Organizational Affiliation

    Department of Chemistry , University College London , 20 Gordon Street , London WC1H 0AJ , U.K.



Macromolecules
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
DAL-LEU-GLY-CYS-THRA5Lactococcus lactisMutation(s): 0 
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 15 
  • Selection Criteria: structures with the lowest energy 
  • OLDERADO: 6QYR Olderado

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Engineering and Physical Sciences Research CouncilUnited KingdomEP/L504889/1

Revision History  (Full details and data files)

  • Version 1.0: 2019-09-11
    Type: Initial release
  • Version 1.1: 2019-10-02
    Changes: Data collection, Database references