5AA3

Crystal structure of MltF from Pseudomonas aeruginosa in the presence of tetrasaccharide and tetrapeptide


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.2 Å
  • R-Value Free: 0.305 
  • R-Value Work: 0.240 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Activation by Allostery in Cell-Wall Remodeling by a Modular Membrane-Bound Lytic Transglycosylase from Pseudomonas aeruginosa.

Dominguez-Gil, T.Lee, M.Acebron-Avalos, I.Mahasenan, K.V.Hesek, D.Dik, D.A.Byun, B.Lastochkin, E.Fisher, J.F.Mobashery, S.Hermoso, J.A.

(2016) Structure 24: 1729-1741

  • DOI: 10.1016/j.str.2016.07.019
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Bacteria grow and divide without loss of cellular integrity. This accomplishment is notable, as a key component of their cell envelope is a surrounding glycopeptide polymer. In Gram-negative bacteria this polymer-the peptidoglycan-grows by the differ ...

    Bacteria grow and divide without loss of cellular integrity. This accomplishment is notable, as a key component of their cell envelope is a surrounding glycopeptide polymer. In Gram-negative bacteria this polymer-the peptidoglycan-grows by the difference between concurrent synthesis and degradation. The regulation of the enzymatic ensemble for these activities is poorly understood. We report herein the structural basis for the control of one such enzyme, the lytic transglycosylase MltF of Pseudomonas aeruginosa. Its structure comprises two modules: an ABC-transporter-like regulatory module and a catalytic module. Occupancy of the regulatory module by peptidoglycan-derived muropeptides effects a dramatic and long-distance (40 Å) conformational change, occurring over the entire protein structure, to open its active site for catalysis. This discovery of the molecular basis for the allosteric control of MltF catalysis is foundational to further study of MltF within the complex enzymatic orchestration of the dynamic peptidoglycan.


    Organizational Affiliation

    Departamento de Cristalografía y Biología Estructural, Instituto de Química-Física "Rocasolano", CSIC, Serrano 119, 28006 Madrid, Spain.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
MEMBRANE-BOUND LYTIC MUREIN TRANSGLYCOSYLASE F
A, B, C, D, E, F, G, H, I, J, K, L
499Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1)Mutation(s): 0 
Gene Names: mltF
EC: 4.2.2.n1
Find proteins for Q9HXN1 (Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1))
Go to UniProtKB:  Q9HXN1
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GLU
Query on GLU

Download SDF File 
Download CCD File 
A
GLUTAMIC ACID
C5 H9 N O4
WHUUTDBJXJRKMK-VKHMYHEASA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.2 Å
  • R-Value Free: 0.305 
  • R-Value Work: 0.240 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 150.605α = 90.00
b = 136.376β = 111.38
c = 195.394γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
Aimlessdata scaling
PHENIXrefinement
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2016-10-12
    Type: Initial release
  • Version 1.1: 2017-03-22
    Type: Database references