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crystallization papers
The stress protein Escherichia coli YciE was overexpressed and purified in three chromatographic steps. Crystals were obtained using PEG 4000 as a precipitant. The YciE protein crystals diffracted to 3.0 Å resolution using a rotating-anode X-ray source. The lattice type is rhombohedral, with unit-cell parameters a = b = 64.2, c = 167.9 Å, α = β = 90, γ = 120°. The crystal belongs to space group R32.