2Q17 image
Deposition Date 2007-05-23
Release Date 2008-04-01
Last Version Date 2024-10-16
Entry Detail
PDB ID:
2Q17
Title:
Formylglycine Generating Enzyme from Streptomyces coelicolor
Biological Source:
Source Organism:
Host Organism:
Method Details:
Experimental Method:
Resolution:
2.10 Å
R-Value Free:
0.24
R-Value Work:
0.19
R-Value Observed:
0.20
Space Group:
P 31 2 1
Macromolecular Entities
Polymer Type:polypeptide(L)
Molecule:formylglycine generating enzyme
Gene (Uniprot):SCO7548
Chain IDs:A, B, C, D, E
Chain Length:346
Number of Molecules:5
Biological Source:Streptomyces coelicolor
Ligand Molecules
Primary Citation
Function and structure of a prokaryotic formylglycine-generating enzyme.
J.Biol.Chem. 283 20117 20125 (2008)
PMID: 18390551 DOI: 10.1074/jbc.M800217200

Abstact

Type I sulfatases require an unusual co- or post-translational modification for their activity in hydrolyzing sulfate esters. In eukaryotic sulfatases, an active site cysteine residue is oxidized to the aldehyde-containing C(alpha)-formylglycine residue by the formylglycine-generating enzyme (FGE). The machinery responsible for sulfatase activation is poorly understood in prokaryotes. Here we describe the identification of a prokaryotic FGE from Mycobacterium tuberculosis. In addition, we solved the crystal structure of the Streptomyces coelicolor FGE homolog to 2.1 A resolution. The prokaryotic homolog exhibits remarkable structural similarity to human FGE, including the position of catalytic cysteine residues. Both biochemical and structural data indicate the presence of an oxidized cysteine modification in the active site that may be relevant to catalysis. In addition, we generated a mutant M. tuberculosis strain lacking FGE. Although global sulfatase activity was reduced in the mutant, a significant amount of residual sulfatase activity suggests the presence of FGE-independent sulfatases in this organism.

Legend

Protein

Chemical

Disease

Primary Citation of related structures