8C5J image
Entry Detail
PDB ID:
8C5J
Keywords:
Title:
Spatial structure of Lch-alpha peptide from two-component lantibiotic system Lichenicidin VK21
Biological Source:
Source Organism:
PDB Version:
Deposition Date:
2023-01-09
Release Date:
2023-03-22
Method Details:
Experimental Method:
Conformers Calculated:
400
Conformers Submitted:
20
Selection Criteria:
structures with the least restraint violations
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Lantibiotic lichenicidin VK21 A1
Chain IDs:A
Chain Length:32
Number of Molecules:1
Biological Source:Bacillus licheniformis
Modified Residue
Compound ID Chain ID Parent Comp ID Details 2D Image
DBU A THR modified residue
DHA A SER modified residue
Ligand Molecules
Primary Citation
Specific Binding of the alpha-Component of the Lantibiotic Lichenicidin to the Peptidoglycan Precursor Lipid II Predetermines Its Antimicrobial Activity.
Int J Mol Sci 24 ? ? (2023)
PMID: 36674846 DOI: 10.3390/ijms24021332

Abstact

To date, a number of lantibiotics have been shown to use lipid II-a highly conserved peptidoglycan precursor in the cytoplasmic membrane of bacteria-as their molecular target. The α-component (Lchα) of the two-component lantibiotic lichenicidin, previously isolated from the Bacillus licheniformis VK21 strain, seems to contain two putative lipid II binding sites in its N-terminal and C-terminal domains. Using NMR spectroscopy in DPC micelles, we obtained convincing evidence that the C-terminal mersacidin-like site is involved in the interaction with lipid II. These data were confirmed by the MD simulations. The contact area of lipid II includes pyrophosphate and disaccharide residues along with the first isoprene units of bactoprenol. MD also showed the potential for the formation of a stable N-terminal nisin-like complex; however, the conditions necessary for its implementation in vitro remain unknown. Overall, our results clarify the picture of two component lantibiotics mechanism of antimicrobial action.

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Primary Citation of related structures