1oih

Crystal structure of the alkylsulfatase AtsK, a non-heme Fe(II) alphaketoglutarate dependent DioxygenaseCrystal structure of the alkylsulfatase AtsK, a non-heme Fe(II) alphaketoglutarate dependent Dioxygenase

Structural highlights 1oih is a 4 chain structure with sequence from Pseudomonas putida. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.89Å Ligands: Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function ATSK_PSEPU Catalyzes the oxigenolytic cleavage of 2-ethylhexyl sulfate (2-EHS) in the presence of alpha-ketoglutarate to yield 2-ethyl-hexanal and succinate, the decarboxylated form of alpha-ketoglutarate. It can accepte a wide range of alpha-keto acids including 2-oxo-valerate, 2-oxo-adipate, 2-oxo-octanoate, 3-methyl-2-oxo-butyrate, oxaloacetate-alpha-ketoadipate, and alpha-ketooctanoate. It can catalyze the cleavage of medium-chain alkyl sulfate esters such as butylsulfate, pentylsulfate, hexylsulfate, heptylsulfate, octylsulfate, nonylsulfate, decylsulfate and sodium dodecyl sulfate (SDS). Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMed The alkylsulfatase AtsK from Pseudomonas putida S-313 belongs to the widespread and versatile non-heme iron(II) alpha-ketoglutarate-dependent dioxygenase superfamily and catalyzes the oxygenolytic cleavage of a variety of different alkyl sulfate esters to the corresponding aldehyde and sulfate. The enzyme is only expressed under sulfur starvation conditions, providing a selective advantage for bacterial growth in soils and rhizosphere. Here we describe the crystal structure of AtsK in the apo form and in three complexes: with the cosubstrate alpha-ketoglutarate, with alpha-ketoglutarate and iron, and finally with alpha-ketoglutarate, iron, and an alkyl sulfate ester used as substrate in catalytic studies. The overall fold of the enzyme is closely related to that of the taurine/alpha-ketoglutarate dioxygenase TauD and is similar to the fold observed for other members of the enzyme superfamily. From comparison of these structures with the crystal structure of AtsK and its complexes, we propose a general mechanism for the catalytic cycle of the alpha-ketoglutarate-dependent dioxygenase superfamily. Crystal structure of the alkylsulfatase AtsK: insights into the catalytic mechanism of the Fe(II) alpha-ketoglutarate-dependent dioxygenase superfamily.,Muller I, Kahnert A, Pape T, Sheldrick GM, Meyer-Klaucke W, Dierks T, Kertesz M, Uson I Biochemistry. 2004 Mar 23;43(11):3075-88. PMID:15023059 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Sulfatase 3D structures

spinqualitylabelsall models 1oih, resolution 1.89Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image