Cloning, expression, purification, crystallization and preliminary X-ray studies of a pyridoxine 5′-phosphate oxidase from Mycobacterium smegmatis
- CSIRO Entomology, Black Mountain, ACT 2601 (Australia)
- Research School of Chemistry, Australian National University, ACT 0200 (Australia)
Good-quality crystals of selenomethionine-substituted Msmeg-3380 were obtained by the hanging-drop vapour-diffusion technique and diffracted to 1.2 Å using synchrotron radiation. Pyridoxine 5′-phosphate oxidases (PNPOxs) are known to catalyse the terminal step in pyridoxal 5′-phosphate biosynthesis in a flavin mononucleotide-dependent manner in humans and Escherichia coli. Recent reports of a putative PNPOx from Mycobacterium tuberculosis, Rv1155, suggest that the cofactor or catalytic mechanism may differ in Mycobacterium species. To investigate this, a putative PNPOx from M. smegmatis, Msmeg-3380, has been cloned. This enzyme has been recombinantly expressed in E. coli and purified to homogeneity. Good-quality crystals of selenomethionine-substituted Msmeg-3380 were obtained by the hanging-drop vapour-diffusion technique and diffracted to 1.2 Å using synchrotron radiation.
- OSTI ID:
- 22360575
- Journal Information:
- Acta Crystallographica. Section F, Journal Name: Acta Crystallographica. Section F Journal Issue: Pt 5 Vol. 64; ISSN ACSFCL; ISSN 1744-3091
- Country of Publication:
- United Kingdom
- Language:
- English
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