6s07

Structure of formylglycine-generating enzyme at 1.04 A in complex with copper and substrate reveals an acidic pocket for binding and acti-vation of molecular oxygen.

spinqualitylabelsall models 6s07, resolution 1.04Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 6s07 is a 2 chain structure with sequence from Thermomonospora curvata DSM 43183. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.04Å Ligands: BE2, CA, CL, CU1 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function FGE_THECD Oxidase that catalyzes the conversion of cysteine to 3-oxoalanine on target proteins. 3-oxoalanine modification, which is also named formylglycine (fGly), occurs in the maturation of arylsulfatases and some alkaline phosphatases that use the hydrated form of 3-oxoalanine as a catalytic nucleophile. Publication Abstract from PubMed The formylglycine generating enzyme (FGE) catalyzes oxidative conversion of specific peptidyl-cysteine residues to formylglycine. FGE mediates O2-activation and hydrogen-atom abstraction in an active site that contains Cu(i) coordinated to two cysteine residues. Similar coordination geometries are common among copper-sensing transcription factors and copper-chaperone but are unprecedented among copper-dependent oxidases. To examine the mechanism of this unusual catalyst we determined the 1.04 A structure of FGE from Thermomonospora curvata in complex with copper and a cysteine-containing peptide substrate. This structure unveils a network of four crystallographic waters and two active site residues that form a highly acidic O2-binding pocket juxtaposed to the trigonal planar tris-cysteine coordinated Cu(i) center. Comparison with structures of FGE in complex with Ag(i) and Cd(ii) combined with evidence from NMR spectroscopy and kinetic observations highlight several structural changes that are induced by substrate binding and prime the enzyme for O2-binding and subsequent activation. Structure of formylglycine-generating enzyme in complex with copper and a substrate reveals an acidic pocket for binding and activation of molecular oxygen.,Miarzlou DA, Leisinger F, Joss D, Haussinger D, Seebeck FP Chem Sci. 2019 Jun 18;10(29):7049-7058. doi: 10.1039/c9sc01723b. eCollection 2019, Aug 7. PMID:31588272 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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