4X9M

Oxidized L-alpha-Glycerophosphate Oxidase from Mycoplasma pneumoniae with FAD bound

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.204 
  • R-Value Work: 0.148 
  • R-Value Observed: 0.150 

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Literature

Structure and proposed mechanism of l-alpha-glycerophosphate oxidase from Mycoplasma pneumoniae.

Elkhal, C.K., Kean, K.M., Parsonage, D., Maenpuen, S., Chaiyen, P., Claiborne, A., Karplus, P.A.

(2015) FEBS J 282: 3030-3042

  • DOI: 10.1111/febs.13233
  • Primary Citation of Related Structures:  
    4X9M, 4X9N

  • PubMed Abstract: 

    • The formation of H2 O2 by the FAD-dependent L-α-glycerophosphate oxidase (GlpO) is important for the pathogenesis of Streptococcus pneumoniae and Mycoplasma pneumoniae. The structurally known GlpO from Streptococcus sp. (SspGlpO) is similar to the pneumococcal protein (SpGlpO) and provides a guide for drug design against that target ...

    The formation of H2 O2 by the FAD-dependent L-α-glycerophosphate oxidase (GlpO) is important for the pathogenesis of Streptococcus pneumoniae and Mycoplasma pneumoniae. The structurally known GlpO from Streptococcus sp. (SspGlpO) is similar to the pneumococcal protein (SpGlpO) and provides a guide for drug design against that target. However, M. pneumoniae GlpO (MpGlpO), having < 20% sequence identity with structurally known GlpOs, appears to represent a second type of GlpO that we designate as type II GlpOs. In the present study, the recombinant His-tagged MpGlpO structure is described at an approximate resolution of 2.5 Å, solved by molecular replacement using, as a search model, the Bordetella pertussis protein 3253 (Bp3253), comprising a protein of unknown function solved by structural genomics efforts. Recombinant MpGlpO is an active oxidase with a turnover number of approximately 580 min(-1), whereas Bp3253 showed no GlpO activity. No substantial differences exist between the oxidized and dithionite-reduced MpGlpO structures. Although, no liganded structures were determined, a comparison with the tartrate-bound Bp3253 structure and consideration of residue conservation patterns guided the construction of a model for L-α-glycerophosphate (Glp) recognition and turnover by MpGlpO. The predicted binding mode also appears relevant for the type I GlpOs (such as SspGlpO) despite differences in substrate recognition residues, and it implicates a histidine conserved in type I and II Glp oxidases and dehydrogenases as the catalytic acid/base. The present study provides a solid foundation for guiding further studies of the mitochondrial Glp dehydrogenases, as well as for continued studies of M. pneumoniae and S. pneumoniae glycerol metabolism and the development of novel therapeutics targeting MpGlpO and SpGlpO.

    Organizational Affiliation: 

    Department of Biochemistry and Biophysics, Oregon State University, Corvallis, OR, USA.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
L-alpha-glycerophosphate oxidaseA418Mycoplasma pneumoniae M129Mutation(s): 0 
Gene Names: MPN_051, D09_orf384, MP103
UniProt
Find proteins for P75063 (Mycoplasma pneumoniae (strain ATCC 29342 / M129))
Explore P75063 
Go to UniProtKB:  P75063
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FAD (Subject of Investigation/LOI)
Query on FAD
Download Ideal Coordinates CCD File 
 B [auth A]FLAVIN-ADENINE DINUCLEOTIDE
C27 H33 N9 O15 P2
VWWQXMAJTJZDQX-UYBVJOGSSA-N		 Ligand Interaction
G3P (Subject of Investigation/LOI)
Query on G3P
Download Ideal Coordinates CCD File 
 D [auth A]SN-GLYCEROL-3-PHOSPHATE
C3 H9 O6 P
AWUCVROLDVIAJX-GSVOUGTGSA-N		 Ligand Interaction
NI
Query on NI
Download Ideal Coordinates CCD File 
 C [auth A]NICKEL (II) ION
Ni
VEQPNABPJHWNSG-UHFFFAOYSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.204 
  • R-Value Work: 0.148 
  • R-Value Observed: 0.150 
  • Space Group: P 2 3
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 111.59α = 90
b = 111.59β = 90
c = 111.59γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
iMOSFLMdata reduction
SCALAdata scaling
Cootmodel building
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-03-04
    Type: Initial release
  • Version 1.1: 2015-04-01
    Changes: Database references
  • Version 1.2: 2015-09-02
    Changes: Database references