The haem oxygenase ChuZ from Campylobacter jejuni, a major enteric pathogen in humans, is part of the iron-acquisition mechanism that is involved in bacterial survival and persistence in hosts. The ChuZ-haemin complex has been purified and crystallized and diffraction data have been collected to 2.4 Å resolution. The ChuZ-haemin complex crystals belonged to space group C222(1), with unit-cell parameters a = 106.474, b = 106.698, c = 52.464 Å, α = β = γ = 90°. The asymmetric unit contained one ChuZ monomer, with a Matthews coefficient of 2.58 Å(3) Da(-1).
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