3P9U image
Deposition Date 2010-10-18
Release Date 2011-04-27
Last Version Date 2024-11-20
Entry Detail
PDB ID:
3P9U
Keywords:
OXIDOREDUCTASE
Title:
Crystal structure of TetX2 from Bacteroides thetaiotaomicron with substrate analogue
Biological Source:
Source Organism:
Bacteroides thetaiotaomicron (Taxon ID: 818)
Host Organism:
Escherichia coli
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
2.81 Å
R-Value Free:
0.28
R-Value Work:
0.23
R-Value Observed:
0.24
Space Group:
P 1 21 1
3P9U validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Molecule:TetX2 protein
Gene (Uniprot):tetX2
Chain IDs:A, B, C, D
Chain Length:378
Number of Molecules:4
Biological Source:Bacteroides thetaiotaomicron
UniProt ID:Q93L51 Pfam ID:PF01494 EC:1.14.13.231
Modified Residue
Compound ID Chain ID Parent Comp ID Details 2D Image
MSE A MET SELENOMETHIONINE
Ligand Molecules
FAD
SO4
Primary Citation
Crystal structure of Bacteroides thetaiotaomicron TetX2: a tetracycline degrading monooxygenase at 2.8 A resolution.
Proteins 79 2335 2340 (2011)
PMID: 21590745 DOI: 10.1002/prot.23052

Abstact

We have determined the structure of Bacteroides thetaiotaomicron TetX2 at 2.8 Å resolution, and shown that it is a class A flavin dependent oxidoreductase. TetX2 has broad activity against a range of tetracyclines including one of the most recent tetracyclines, tigecycline (Tygacil®). Comparison of TetX2 with that of the weakly homologous Pseudomonas fluorescens para-hydroxybenzoate hydroxylase (PHBH) (21% identity) shows substantial differences among residues at the substrate binding site although FAD is positioned in a similar conformation between the two enzymes and is poised to carry out catalysis.

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Primary Citation of related structures
3P9U