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Crystallization and preliminary X-ray analysis of recombinant histone HPhA from the hyperthermophilic archaeon
1Laboratory of Structural Biology, Department of Biological Science and Technology and MOE Laboratory of Protein Science, Tsinghua University, Beijing 100084, People's Republic of China.
Abstract:
Recombinant archaeal histone from the hyperthermophile Pyrococcus horikoshii OT3 (HPhA) was crystallized by the hanging-drop vapour-diffusion method. Crystals grew at 291 K in 200 mM (NH(4))(2)SO(4), 100 mM sodium acetate buffer pH 4.6, 19% PEG 4000. Diffraction data were obtained to a resolution of 2.3 A from a single frozen crystal, which belonged to space group P2(1) with unit-cell parameters a = 34.99, b = 46.89, c = 35.02 A, alpha = gamma = 90, beta = 104 degrees. The asymmetric unit contained two molecules and had a solvent content of approximately 35%.
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