2KTN

Spatial structure of Lch-alpha peptide from two-component lantibiotic system Lichenicidin VK21


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: target function 

wwPDB Validation 3D Report Full Report


This is version 1.5 of the entry. See complete history

Literature

Isolation, Structure Elucidation, and Synergistic Antibacterial Activity of a Novel Two-Component Lantibiotic Lichenicidin from Bacillus Licheniformis Vk21.

Shenkarev, Z.O.Finkina, E.I.Nurmukhamedova, E.K.Balandin, S.V.Mineev, K.S.Nadezhdin, K.D.Yakimenko, Z.A.Tagaev, A.A.Temirov, Y.V.Arseniev, A.S.Ovchinnikova, T.V.

(2010) Biochemistry 49: 6462

  • DOI: 10.1021/bi100871b
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • A novel synergetic lantibiotic pair, Lchalpha (3249.51 Da) and Lchbeta (3019.36 Da), termed lichenicidin VK21, was isolated from the producer strain Bacillus licheniformis VK21. Chemical and spatial structures of Lchalpha and Lchbeta were determined. ...

    A novel synergetic lantibiotic pair, Lchalpha (3249.51 Da) and Lchbeta (3019.36 Da), termed lichenicidin VK21, was isolated from the producer strain Bacillus licheniformis VK21. Chemical and spatial structures of Lchalpha and Lchbeta were determined. Each peptide contains 31 amino acid residues linked by 4 intramolecular thioether bridges and the N-terminal 2-oxobutyryl group. Spatial structures of Lchalpha and Lchbeta were studied by NMR spectroscopy in methanol solution. The Lchalpha peptide displays structural homology with mersacidin-like lantibiotics and involves relatively well-structured N- and C-terminal domains connected by a flexible loop stabilized by a thioether bridge Ala11-S-Ala21. In contrast, the Lchbeta peptide represents a prolonged hydrophobic alpha-helix flanked with more flexible N- and C-terminal domains. A lantibiotic cluster of the Bacillus licheniformis VK21 genome which comprises the structural genes, lchA1 and lchA2, encoding the lantibiotics precursors, as well as the gene of a modifying enzyme lchM1, was amplified and sequenced. The mature peptides, Lchalpha and Lchbeta, interact synergistically to possess antibiotic activity against Gram-positive bacteria within a nanomolar concentration range, though the individual peptides were shown to be active at micromolar concentrations. Our results afford molecular insight into the mechanism of lichenicidin VK21 action.


    Organizational Affiliation

    Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya str. 16/10, Moscow, Russia.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
LICHENICIDIN VK21 A1
A
32Bacillus licheniformisMutation(s): 0 
Gene Names: lchA1
Find proteins for P86475 (Bacillus licheniformis)
Go to UniProtKB:  P86475
Small Molecules
Biologically Interesting Molecules 1 Unique
IDChainsNameType/Class2D Diagram3D Interactions
PRD_000197
Query on PRD_000197
AALPHA LICHENICIDIN PREPEPTIDEPolypeptide / Antibiotic

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Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: target function 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-07-21
    Type: Initial release
  • Version 1.1: 2011-06-14
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2011-07-27
    Type: Atomic model, Database references, Derived calculations, Non-polymer description, Structure summary
  • Version 1.4: 2011-08-10
    Type: Other
  • Version 1.5: 2012-12-12
    Type: Other