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Crystallization and preliminary crystallographic studies of both components of the staphylococcal LukE-LukD leukotoxin



Crystallization and preliminary crystallographic studies of both components of the staphylococcal LukE-LukD leukotoxin



Acta Crystallographica. Section F Structural Biology and Crystallization Communications 68(Pt 6): 663-667



Soluble forms of recombinant LukE protein (expressed in Escherichia coli) and of wild-type LukD protein (expressed in Staphylococcus aureus), which together form the staphylococcal LukE-LukD leukotoxin, were purified to homogeneity and crystallized using the sitting-drop vapour-diffusion method. The crystals of LukE belonged to space group I4, with unit-cell parameters a = b = 134.50, c = 64.43 Å, and diffracted X-rays to 1.6 Å resolution. The crystals of LukD belonged to space group P2(1)2(1)2(1), with unit-cell parameters a = 48.04, b = 50.99, c = 137.40 Å, and diffracted to 1.9 Å resolution. Molecular replacement using the LukF-PV structure (PDB entry 1pvl) as a template model allowed the identification of an initial structure solution for the LukD data. In the case of LukE, a solution comprising only a single copy of the search model (LukS-PV; PDB entry 1t5r) was found, although the unit-cell parameters indicated that up to three molecules could be accommodated in the asymmetric unit.

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Accession: 052399343

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PMID: 22684065

DOI: 10.1107/s1744309112014662


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