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  • Title: Preparation and X-ray crystallographic analysis of rubredoxin crystals from Desulfovibrio gigas to beyond ultra-high 0.68 A resolution.
    Author: Chen CJ, Liu MY, Chen YT, LeGall J.
    Journal: Biochem Biophys Res Commun; 2003 Sep 05; 308(4):684-8. PubMed ID: 12927773.
    Abstract:
    Rubredoxin (D.g. Rd), a small non-heme iron-sulfur protein shown to function as a redox coupling protein from the sulfate reducing bacteria Desulfovibrio gigas, has been crystallized using the hanging-drop vapor diffusion method and macroseeding method. Rubredoxin crystals diffract to an ultra-high resolution 0.68 A using synchrotron radiation X-ray, and belong to the space group P2(1) with unit-cell parameters a=19.44 A, b=41.24 A, c=24.10 A, and beta=108.46 degrees. The data set of single-wavelength anomalous dispersion signal of iron in the native crystal was also collected for ab initio structure re-determination. Preliminary analysis indicates that there is one monomer with a [Fe-4S] cluster in each asymmetric unit. The crystal structure at this ultra-high resolution will reveal the details of its biological function. The crystal character and data collection strategy for ultra-high resolution will also be discussed.
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