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  • Title: Mutation in the P36 gene of Mycobacterium bovis provokes attenuation of the bacillus in a mouse model.
    Author: Bigi F, Gioffré A, Klepp L, Santangelo MP, Velicovsky CA, Giambartolomei GH, Fossati CA, Romano MI, Mendum T, McFadden JJ, Cataldi A.
    Journal: Tuberculosis (Edinb); 2005 Jul; 85(4):221-6. PubMed ID: 15922669.
    Abstract:
    P36 is a member of a family of secreted proteins distributed throughout the genus Mycobacterium. The central domain of these proteins contains several amino acid PGLTS repeats, which differ considerably between species. P36, also called exported repetitive protein (Erp) in M. tuberculosis, has been shown to be associated with virulence since the disruption of its gene impaired multiplication of both virulent M. tuberculosis and M. bovis BCG in cultured macrophages and immunocompetent mice. In order to demonstrate that P36 is a putative virulence factor of wild-type Mycobacterium bovis we generated a P36 mutant by gene disruption and we evaluated its replication in spleen and lungs of infected mice. In this study, the mutant strain displays low levels of multiplication in mice, indicating that the P36 gene is important for in vivo growth of M. bovis.
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