Biological Assembly 1  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report | Ligand Interaction

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

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

Macromolecule Content

• Total Structure Weight: 23.24 kDa 
• Atom Count: 1536 
• Modelled Residue Count: 186 
• Deposited Residue Count: 216 
• Unique protein chains: 1

4MAH

Structure of Aspergillus oryzae AA11 Lytic Polysaccharide Monooxygenase with Zn

• PDB DOI: 10.2210/pdb4MAH/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Aspergillus oryzae
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2013-08-16 Released: 2013-12-18 
• Deposition Author(s): Hemsworth, G.R., Henrissat, B., Walton, P.H., Davies, G.J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.55 Å
• R-Value Free: 0.166 
• R-Value Work: 0.132 
• R-Value Observed: 0.134 

Literature

Discovery and characterization of a new family of lytic polysaccharide monooxygenases.

Hemsworth, G.R., Henrissat, B., Davies, G.J., Walton, P.H.

(2014) Nat Chem Biol 10: 122-126

• PubMed: 24362702 
• DOI: 10.1038/nchembio.1417
• Primary Citation of Related Structures:  
  4MAH, 4MAI


• PubMed Abstract: 
  

Lytic polysaccharide monooxygenases (LPMOs) are a recently discovered class of enzymes capable of oxidizing recalcitrant polysaccharides. They are attracting considerable attention owing to their potential use in biomass conversion, notably in the production of biofuels. Previous studies have identified two discrete sequence-based families of these enzymes termed AA9 (formerly GH61) and AA10 (formerly CBM33). Here, we report the discovery of a third family of LPMOs. Using a chitin-degrading exemplar from Aspergillus oryzae, we show that the three-dimensional structure of the enzyme shares some features of the previous two classes of LPMOs, including a copper active center featuring the 'histidine brace' active site, but is distinct in terms of its active site details and its EPR spectroscopy. The newly characterized AA11 family expands the LPMO clan, potentially broadening both the range of potential substrates and the types of reactive copper-oxygen species formed at the active site of LPMOs.

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Organizational Affiliation: 

Department of Chemistry, University of York, Heslington, York, UK.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
AA11 Lytic Polysaccharide Monooxygenase	A	216	Aspergillus oryzae	Mutation(s): 0  Gene Names: AO090102000501 EC: 1.14
UniProt
Find proteins for Q2UA85 (Aspergillus oryzae (strain ATCC 42149 / RIB 40)) Explore Q2UA85  Go to UniProtKB:  Q2UA85

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ZN	B [auth A]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N
EDO	C [auth A]	1,2-ETHANEDIOL C2 H6 O2 LYCAIKOWRPUZTN-UHFFFAOYSA-N
CL	D [auth A]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.55 Å
• R-Value Free: 0.166 
• R-Value Work: 0.132 
• R-Value Observed: 0.134 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 55.207	α = 90
b = 61.498	β = 90
c = 65.136	γ = 90

Software Package:

Software Name	Purpose
SCALA	data scaling
REFMAC	refinement
PDB_EXTRACT	data extraction
XDS	data reduction
SHELXD	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2013-08-16 
• Released Date: 2013-12-18 
Deposition Author(s): Hemsworth, G.R., Henrissat, B., Walton, P.H., Davies, G.J.

Revision History  

• Version 1.0: 2013-12-18
  Type: Initial release
  
• Version 1.1: 2013-12-25
  Changes: Source and taxonomy
• Version 1.2: 2014-01-22
  Changes: Database references
• Version 1.3: 2014-02-05
  Changes: Database references
• Version 1.4: 2017-11-15
  Changes: Refinement description