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Cloning, purification, crystallization and preliminary X‐ray crystallographic analysis of the N‐terminal domain of DEAD‐box RNA helicase from Staphylococcus aureus strain Mu50

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DEAD‐box helicases are enzymes with an ATP‐dependent RNA‐unwinding function that are involved in a variety of cellular processes including RNA splicing, ribosome biogenesis and RNA degradation. In this study, the N‐terminal domain of DEAD‐box RNA helicase from Staphylococcus aureus strain Mu50 was overexpressed in Escherichia coli, purified and crystallized. Diffraction data were collected to 2.60 Å resolution using a synchrotron‐radiation source. The crystal belonged to space group P1, with unit‐cell parameters a = 70.81, b = 80.23, c = 86.25 Å, α = 69.54, β = 66.54, γ = 87.32°. The unit cell contained six molecules, with a corresponding V M of 2.91 Å3 Da−1 and a solvent content of 56.1%.
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Keywords: DEAD‐box RNA helicases; Staphylococcus aureus

Document Type: Research Article

Publication date: December 1, 2010

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