Transformation of mycobacterial species using hygromycin resistance as selectable marker Garbe, Thomas R. and Barathi, Jaya and Barnini, Simona and Zhang, Ying and Abou-Zeid, Christiane and Tang, Dan and Mukherjee, Rama and Young, Douglas B.,, 140, 133-138 (1994), doi = https://doi.org/10.1099/13500872-140-1-133, publicationName = Microbiology Society, issn = 1350-0872, abstract= Summary: Electroporation with shuttle plasmids carrying a kanamycin resistance gene as a selectable marker failed to generate transformants in two mycobacterial species currently being used in human vaccine trials (Mycobacterium w and Mycobacterium vaccae). In contrast, efficient transformation [103-105 transformants (μg DNA)−1] was obtained using novel vectors with selection based on expression of resistance to hygromycin. The hygromycin resistance vector was also found to be more efficient than kanamycin resistance vectors for transformation of Mycobacterium smegmatis and Mycobacterium bovis BCG. The hygromycin resistance vector was used to overexpress superoxide dismutase of Mycobacterium tuberculosis in M. vaccae in a form suitable for detailed structural analysis. The potential use of this approach for generation of novel recombinant mycobacterial vaccines is discussed., language=, type=