Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

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

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

Macromolecule Content

• Total Structure Weight: 50200.52 
• Atom Count: 3460 
• Residue Count: 445 
• Unique protein chains: 1

4RSL

Structure of fructosyl peptide oxidase from E. terrenum

• DOI: 10.2210/pdb4RSL/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Penicillium terrenum
• Expression System: Escherichia coli


• Deposited: 2014-11-08 Released: 2015-05-20 
• Deposition Author(s): Gan, W., Gao, F., Xing, K., Jia, M., Liu, H., Gong, W.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.9 Å
• R-Value Free: 0.233 
• R-Value Work: 0.191 

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.,Sect.F 71: 381-387

• PubMed: 25849495 
• DOI: 10.1107/S2053230X15003921


• 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. 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.

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Organizational Affiliation: 

Center for Chemical Biology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300457, People's Republic of China.,Key Laboratory of RNA, Institute of Biophysics, Chinese Academy of Sciences, 15 Datun Road, Beijing 100101, People's Republic of China.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Fructosyl peptide oxidase	A	445	Penicillium terrenum	Mutation(s): 0  Gene Names: fpoxE EC: 1.5.3.-
Find proteins for Q765A9 (Penicillium terrenum) Go to UniProtKB:  Q765A9

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
PO4	A	PHOSPHATE ION O4 P NBIIXXVUZAFLBC-UHFFFAOYSA-K
FAD	A	FLAVIN-ADENINE DINUCLEOTIDE C27 H33 N9 O15 P2 VWWQXMAJTJZDQX-UYBVJOGSSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.9 Å
• R-Value Free: 0.233 
• R-Value Work: 0.191 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length (Å)	Angle (°)
a = 65.603	α = 90.00
b = 80.018	β = 90.00
c = 83.418	γ = 90.00

Software Package:

Software Name	Purpose
PHENIX	refinement
HKL-2000	data collection
HKL-2000	data scaling
HKL-2000	data reduction
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2014-11-08 
• Released Date: 2015-05-20 
• Deposition Author(s): Gan, W., Gao, F., Xing, K., Jia, M., Liu, H., Gong, W.

Revision History 

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