ArticleActa crystallographica. Section F, Structural biology and crystallization communications2012
Crystallization and preliminary X-ray crystallographic analysis of hydroquinone dioxygenase from Sphingomonas sp. TTNP3.
Article in Acta crystallographica. Section F, Structural biology and crystallization communications, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Hydroquinone dioxygenase (HQDO), a novel Fe(II) ring-fission dioxygenase from Sphingomonas sp. strain TTNP3 which oxidizes a wide range of hydroquinones to the corresponding 4-hydroxymuconic semialdehydes, has been crystallized. The enzyme is an α(2)β(2) heterotetramer constituted of two subunits of 19 and 38 kDa. Diffraction-quality crystals of HQDO were obtained using the sitting-drop vapour-diffusion method at 277 K from a solution consisting of 16% PEG 4000, 0.3 M MgCl(2), 0.1 M Tris pH 8.5. The crystals belonged to the monoclinic space group P2(1), with unit-cell parameters a = 88.4, b = 125.4, c = 90.8 Å, β = 105.3°. The asymmetric unit contained two heterotetramers, i.e. four copies of each of the two different subunits related by noncrystallographic 222 symmetry. A complete data set extending to a maximum resolution of 2.5 Å was collected at 100 K using a wavelength of 0.980 Å.
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