6H5F

LtgA disordered Helix

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.193 
  • R-Value Observed: 0.196 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history. 


Literature

Defective lytic transglycosylase disrupts cell morphogenesis by hindering cell wall de-O-acetylation inNeisseria meningitidis.

Williams, A.H., Wheeler, R., Deghmane, A.E., Santecchia, I., Schaub, R.E., Hicham, S., Moya Nilges, M., Malosse, C., Chamot-Rooke, J., Haouz, A., Dillard, J.P., Robins, W.P., Taha, M.K., Gomperts Boneca, I.

(2020) Elife 9

  • DOI: https://doi.org/10.7554/eLife.51247
  • Primary Citation of Related Structures:  
    6H5F

  • PubMed Abstract: 

    • Lytic transglycosylases (LT) are enzymes involved in peptidoglycan (PG) remodeling. However, their contribution to cell-wall-modifying complexes and their potential as antimicrobial drug targets remains unclear. Here, we determined a high-resolution structure of the LT, an outer membrane lipoprotein from Neisseria species with a disordered active site helix (alpha helix 30) ...

    Lytic transglycosylases (LT) are enzymes involved in peptidoglycan (PG) remodeling. However, their contribution to cell-wall-modifying complexes and their potential as antimicrobial drug targets remains unclear. Here, we determined a high-resolution structure of the LT, an outer membrane lipoprotein from Neisseria species with a disordered active site helix (alpha helix 30). We show that deletion of the conserved alpha-helix 30 interferes with the integrity of the cell wall, disrupts cell division, cell separation, and impairs the fitness of the human pathogen Neisseria meningitidis during infection. Additionally, deletion of alpha-helix 30 results in hyperacetylated PG, suggesting this LtgA variant affects the function of the PG de- O- acetylase (Ape 1). Our study revealed that Ape 1 requires LtgA for optimal function, demonstrating that LTs can modulate the activity of their protein-binding partner. We show that targeting specific domains in LTs can be lethal, which opens the possibility that LTs are useful drug-targets.

    Organizational Affiliation: 

    Unité Biologie et Génétique de la Paroi Bactérienne, Institut Pasteur; Groupe Avenir, INSERM 75015, Paris, France.



Macromolecules
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(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Putative soluble lytic murein transglycosylase616Neisseria meningitidis NM422Mutation(s): 0 
Gene Names: NMB1949
UniProt
Find proteins for Q9JXP1 (Neisseria meningitidis serogroup B (strain MC58))
Explore Q9JXP1 
Go to UniProtKB:  Q9JXP1
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9JXP1
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.193 
  • R-Value Observed: 0.196 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 66.822α = 90
b = 72.256β = 90
c = 122.313γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
XDSdata scaling
PHASERphasing
PHENIXrefinement

Structure Validation

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View more in-depth experimental data
Entry History 

Deposition Data

  • Released Date: 2019-08-28 
    • Deposition Author(s): Williams, A.H.
  • This entry supersedes: 4YP4

Revision History  (Full details and data files)

  • Version 1.0: 2019-08-28
    Type: Initial release
  • Version 1.1: 2019-09-04
    Changes: Data collection, Database references, Source and taxonomy, Structure summary
  • Version 1.2: 2020-08-05
    Changes: Database references