4RSL

Structure of fructosyl peptide oxidase from E. terrenum

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.233 
  • R-Value Work: 0.191 
  • R-Value Observed: 0.193 

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Literature

Structural basis of the substrate specificity of the FPOD/FAOD family revealed by fructosyl peptide oxidase from Eupenicillium terrenum

Gan, W., Gao, F., Xing, K., Jia, M., Liu, H., Gong, W.

(2015) Acta Crystallogr F Struct Biol Commun 71: 381-387

  • DOI: 10.1107/S2053230X15003921
  • Primary Citation of Related Structures:  
    4RSL

  • PubMed Abstract: 

    • The FAOD/FPOD family of proteins has the potential to be useful for the longterm detection of blood glucose levels in diabetes patients. A bottleneck for this application is to find or engineer a FAOD/FPOD family enzyme that is specifically active towards α-fructosyl peptides but is inactive towards other types of glycated peptides ...

    The FAOD/FPOD family of proteins has the potential to be useful for the longterm detection of blood glucose levels in diabetes patients. A bottleneck for this application is to find or engineer a FAOD/FPOD family enzyme that is specifically active towards α-fructosyl peptides but is inactive towards other types of glycated peptides. Here, the crystal structure of fructosyl peptide oxidase from Eupenicillium terrenum (EtFPOX) is reported at 1.9 Å resolution. In contrast to the previously reported structure of amadoriase II, EtFPOX has an open substrate entrance to accommodate the large peptide substrate. The functions of residues critical for substrate selection are discussed based on structure comparison and sequence alignment. This study reveals the first structural details of group I FPODs that prefer α-fructosyl substrates and could provide significant useful information for uncovering the mechanism of substrate specificity of FAOD/FPODs and guidance towards future enzyme engineering for diagnostic purposes.

    Organizational Affiliation: 

    Key Laboratory of RNA, Institute of Biophysics, Chinese Academy of Sciences, 15 Datun Road, Beijing 100101, People's Republic of China.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Fructosyl peptide oxidaseA445Penicillium terrenumMutation(s): 0 
Gene Names: fpoxE
EC: 1.5.3
UniProt
Find proteins for Q765A9 (Penicillium terrenum)
Explore Q765A9 
Go to UniProtKB:  Q765A9
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ765A9
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FAD
Query on FAD
Download Ideal Coordinates CCD File 
C [auth A]FLAVIN-ADENINE DINUCLEOTIDE
C27 H33 N9 O15 P2
VWWQXMAJTJZDQX-UYBVJOGSSA-N		 Ligand Interaction
PO4
Query on PO4
Download Ideal Coordinates CCD File 
B [auth A]PHOSPHATE ION
O4 P
NBIIXXVUZAFLBC-UHFFFAOYSA-K		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.233 
  • R-Value Work: 0.191 
  • R-Value Observed: 0.193 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 65.603α = 90
b = 80.018β = 90
c = 83.418γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
PHASERphasing
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-05-20
    Type: Initial release