2ivf

Ethylbenzene dehydrogenase from Aromatoleum aromaticum

spinqualitylabelsall models 2ivf, resolution 1.88Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2ivf is a 3 chain structure with sequence from Aromatoleum aromaticum EbN1. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.88Å Ligands: ACT, GOL, HEM, MD1, MES, MGD, MO, PO4 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function Q5P5I0_AROAE 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 Anaerobic degradation of hydrocarbons was discovered a decade ago, and ethylbenzene dehydrogenase was one of the first characterized enzymes involved. The structure of the soluble periplasmic 165 kDa enzyme was established at 1.88 A resolution. It is a heterotrimer. The alpha subunit contains the catalytic center with a molybdenum held by two molybdopterin-guanine dinucleotides, one with an open pyran ring, and an iron-sulfur cluster with a histidine ligand. During catalysis, electrons produced by substrate oxidation are transferred to a heme in the gamma subunit and then presumably to a separate cytochrome involved in nitrate respiration. The beta subunit contains four iron-sulfur clusters and is structurally related to ferredoxins. The gamma subunit is the first known protein with a methionine and a lysine as axial heme ligands. The catalytic product was modeled into the active center, showing the reaction geometry. A mechanism consistent with activity and inhibition data of ethylbenzene-related compounds is proposed. Crystal structure of ethylbenzene dehydrogenase from Aromatoleum aromaticum.,Kloer DP, Hagel C, Heider J, Schulz GE Structure. 2006 Sep;14(9):1377-88. PMID:16962969 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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