1r30

The Crystal Structure of Biotin Synthase, an S-Adenosylmethionine-Dependent Radical Enzyme

spinqualitylabelsall models 1r30, resolution 3.40Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1r30 is a 2 chain structure with sequence from Escherichia coli. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 3.4Å Ligands: DTB, FES, SAM, TRS Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function BIOB_ECOLI Catalyzes the conversion of dethiobiotin (DTB) to biotin by the insertion of a sulfur atom into dethiobiotin via a radical-based mechanism. 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 crystal structure of biotin synthase from Escherichia coli in complex with S-adenosyl-L-methionine and dethiobiotin has been determined to 3.4 angstrom resolution. This structure addresses how "AdoMet radical" or "radical SAM" enzymes use Fe4S4 clusters and S-adenosyl-L-methionine to generate organic radicals. Biotin synthase catalyzes the radical-mediated insertion of sulfur into dethiobiotin to form biotin. The structure places the substrates between the Fe4S4 cluster, essential for radical generation, and the Fe2S2 cluster, postulated to be the source of sulfur, with both clusters in unprecedented coordination environments. Crystal structure of biotin synthase, an S-adenosylmethionine-dependent radical enzyme.,Berkovitch F, Nicolet Y, Wan JT, Jarrett JT, Drennan CL Science. 2004 Jan 2;303(5654):76-9. PMID:14704425 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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