2Y8P

Crystal Structure of an Outer Membrane-Anchored Endolytic Peptidoglycan Lytic Transglycosylase (MltE) from Escherichia coli

• PDB DOI: https://doi.org/10.2210/pdb2Y8P/pdb

• Classification: LYASE
• Organism(s): Escherichia coli K-12
• Expression System: Escherichia coli K-12
• Mutation(s): No 
• Membrane Protein: Yes  OPM


• Deposited: 2011-02-08 Released: 2011-04-13 
• Deposition Author(s): Artola-Recolons, C., Carrasco-Lopez, C., Llarrull, L.I., Kumarasiri, M., Lastochkin, E., Martinez-Ilarduya, I., Meindl, K., Uson, I., Mobashery, S., Hermoso, J.A.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.252 
• R-Value Work: 0.203 
• R-Value Observed: 0.205 

Literature

High-Resolution Crystal Structure of Mlte, an Outer Membrane-Anchored Endolytic Peptidoglycan Lytic Transglycosylase from Escherichia Coli.

Artola-Recolons, C., Carrasco-Lopez, C., Llarrull, L.I., Kumarasiri, M., Lastochkin, E., Martinez De Ilarduya, I., Meindl, K., Uson, I., Mobashery, S., Hermoso, J.A.

(2011) Biochemistry 50: 2384

• PubMed: 21341761 
• DOI: https://doi.org/10.1021/bi200085y
• Primary Citation of Related Structures:  
  2Y8P


• PubMed Abstract: 
  

  The crystal structure of the first endolytic peptidoglycan lytic transglycosylase MltE from Escherichia coli is reported here. The degradative activity of this enzyme initiates the process of cell wall recycling, which is an integral event in the existence of bacteria. The structure sheds light on how MltE recognizes its substrate, the cell wall peptidoglycan. It also explains the ability of this endolytic enzyme to cleave in the middle of the peptidoglycan chains. Furthermore, the structure reveals how the enzyme is sequestered on the inner leaflet of the outer membrane.

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Organizational Affiliation: 

Department of Crystallography and Structural Biology, Instituto de Química-Física "Rocasolano", CSIC, Serrano 119, 28006 Madrid, Spain.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Biological Assembly 2  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 2 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 42.83 kDa 
• Atom Count: 3,165 
• Modelled Residue Count: 378 
• Deposited Residue Count: 388 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
ENDO-TYPE MEMBRANE-BOUND LYTIC MUREIN TRANSGLYCOSYLASE A	A, B	194	Escherichia coli K-12	Mutation(s): 0  EC: 4.2.2 Membrane Entity: Yes
UniProt
Find proteins for P0C960 (Escherichia coli (strain K12)) Explore P0C960  Go to UniProtKB:  P0C960

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.252 
• R-Value Work: 0.203 
• R-Value Observed: 0.205 
• Space Group: C 2 2 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 123.324	α = 90
b = 183.932	β = 90
c = 35.292	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
XDS	data reduction
SCALA	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2011-04-13 
Deposition Author(s): Artola-Recolons, C., Carrasco-Lopez, C., Llarrull, L.I., Kumarasiri, M., Lastochkin, E., Martinez-Ilarduya, I., Meindl, K., Uson, I., Mobashery, S., Hermoso, J.A.

Revision History  

• Version 1.0: 2011-04-13
  Type: Initial release
  
• Version 1.1: 2011-05-08
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance