The stabilized NTS1 mutant with T4 lysozyme replacing most of intracellular loop 3 was expressed in insect cells and purified by cobalt affinity chromatography. It was crystallized in lipidic cubic phase. Diffraction data were collected at the GM/CA-CAT beamline of the Advanced Photon Source at the Argonne National Laboratory. The structure was solved by molecular replacement using data from a single crystal.
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