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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Cloning, expression and crystallization of VMA13p, an essential subunit of the vacuolar H+-ATPase of Saccharomyces cerevisiae.

The expression and crystallization of the VMA13p subunit of the vacuolar proton-translocating ATPase (V-ATPase) of Saccharomyces cerevisiae is described. This 478 amino-acid subunit is essential for activity but not for the assembly of this multisubunit complex. The protein has been recombinantly overexpressed in Escherichia coli and purified. Diffraction-quality crystals have been obtained using the hanging-drop vapor-diffusion method with ammonium sulfate as precipitant. Several different crystal forms were obtained. The most suitable crystal form for crystallographic characterization belongs to space group P3(1)21 or its enantiomorph, with unit-cell parameters a = b = 118.8, c = 119.3 A. Using an in-house X-ray source, the crystals diffract to about 3.5 A resolution under rapidly frozen conditions.[1]


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