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Acta Crystallogr D Biol Crystallogr. 2004 Nov;60(Pt 11):2003-5. Epub 2004 Oct 20.

Crystallization and preliminary X-ray crystallographic analysis of chorismate synthase from Mycobacterium tuberculosis.

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Departamento de Física, UNESP, São José do Rio Preto, SP 15054-000, Brazil.


The enzymes of the shikimate pathway are potential targets for the development of new therapies because they are essential for bacteria but absent from mammals. The last step in this pathway is performed by chorismate synthase (CS), which catalyzes the conversion of 5-enolpyruvylshikimate-3-phosphate to chorismate. Optimization of crystallization trials allowed the crystallization of homogeneous recombinant CS from Mycobacterium tuberculosis (MtCS). The crystals of MtCS belong to space group P6(4)22 (or P6(2)22) and diffract to 2.8 A resolution, with unit-cell parameters a = b = 129.7, c = 156.8 A. There are two molecules in the asymmetric unit. Molecular-replacement trials were not successful. Heavy-atom derivative screening is in progress.

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