8you

The pmTcDH complex structure with an inhibitor SeCN

spinqualitylabelsall models 8you, resolution 1.80Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 8you is a 2 chain structure with sequence from Pelomicrobium methylotrophicum. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.8Å Ligands: CU, GOL, NA, SE, SEK Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function A0A5C7ETD9_9PROT Publication Abstract from PubMed Some sulfur-oxidizing bacteria playing an important role in global geochemical cycles utilize thiocyanate as the sole source of energy and nitrogen. In these bacteria the process of thiocyanate into cyanate conversion is mediated by thiocyanate dehydrogenases - a recently discovered family of copper-containing enzymes with the three‑copper active site unique among the other copper proteins. To get a deeper insight into the structure and molecular mechanism of action of thiocyanate dehydrogenases we isolated, purified, and comprehensively characterized an enzyme from the bacterium Pelomicrobium methylotrophicum. High-resolution crystal structures of the thiocyanate dehydrogenase in the free state and in the complexes with the transition state analog, thiourea, and the closest substrate analog, selenocyanate, unveiled the fine details of molecular events occurring at the enzyme active site. During the reaction thiocyanate dehydrogenase undergoes profound conformational change that affects the position of the constituent copper ions and results in the activation of the attacking water molecule. The structure of the enzyme complex with the selenium atom bridged in-between two copper ions was obtained representing an important transient intermediate. Structures of the complexes with inhibitors supplemented with quantum chemical calculations clarify the role of copper ions and refine molecular mechanism of catalysis by thiocyanate dehydrogenase. Molecular mechanism of thiocyanate dehydrogenase at atomic resolution.,Varfolomeeva LA, Shipkov NS, Dergousova NI, Boyko KM, Khrenova MG, Tikhonova TV, Popov VO Int J Biol Macromol. 2024 Nov;279(Pt 1):135058. doi: , 10.1016/j.ijbiomac.2024.135058. Epub 2024 Aug 25. PMID:39191340 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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