5mid | pdb_00005mid

The study of the X-ray induced enzymatic reduction of molecular oxygen to water for laccase from Steccherinum murashkinskyi.The 14-th structure of the series with total exposition time 393 min.

spinqualitylabelsall models 5mid, resolution 1.35Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 5mid is a 1 chain structure with sequence from Steccherinum murashkinskyi. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: CIT, CU, NA, NAG, OXY Activity: Laccase, with EC number 1.10.3.2 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Publication Abstract from PubMed The laccase from Steccherinum murashkinskyi is a member of the large family of multicopper oxidases that catalyze the oxidation of a wide range of organic and inorganic substrates, accompanied by the reduction of dioxygen to water. The reducing properties of X-ray radiation and the high quality of the laccase crystals allow the study of the catalytic reduction of dioxygen to water directly in a crystal. A series of diffraction data sets with increasing absorbed radiation dose were collected from a single crystal of Steccherinum murashkinskyi laccase at 1.35 A resolution. Changes in the active-site structure associated with the reduction of molecular oxygen to water on increasing the absorbed dose of ionizing radiation were detected. The structures in the series are mixtures of different states of the enzyme-substrate complex. Nevertheless, it was possible to interpret these structures as complexes of various oxygen ligands with copper ions in different oxidation states. The results allowed the mechanism of oxygen reduction catalyzed by laccases to be refined. Structural study of the X-ray-induced enzymatic reduction of molecular oxygen to water by Steccherinum murashkinskyi laccase: insights into the reaction mechanism.,Polyakov KM, Gavryushov S, Ivanova S, Fedorova TV, Glazunova OA, Popov AN, Koroleva OV Acta Crystallogr D Struct Biol. 2017 May 1;73(Pt 5):388-401. doi:, 10.1107/S2059798317003667. Epub 2017 Apr 26. PMID:28471364 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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