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Expression, purification, crystallization and preliminary X-ray diffraction data of methylmalonate-semialdehyde
Hélène Dubourg1, Claire Stines-Chaumeil, Claude Didierjean
1Laboratoire de Cristallographie et Modélisation des Matériaux Minéraux et Biologiques, UMR 7036 CNRS-UHP, Groupe Biocristallographie, Faculté des Sciences et Techniques, BP 239, 54506 Vandoeuvre-lès-Nancy, France.
Abstract:
Methylmalonate-semialdehyde dehydrogenase from Bacillus subtilis was cloned and overexpressed in Escherichia coli. Suitable crystals for X-ray diffraction experiments were obtained by the hanging-drop vapour-diffusion method using ammonium sulfate as precipitant. The crystals belong to space group P2(1)2(1)2(1), with unit-cell parameters a = 195.2, b = 192.5, c = 83.5 A, and contain one tetramer per asymmetric unit. X-ray diffraction data were collected to 2.5 A resolution using a synchrotron-radiation source. The crystal structure was solved by the molecular-replacement method.