Abstract
Mycoplasma gallisepticum belongs to the class Mollicutes and induces severe chronic respiratory disease in chickens. It lacks the cell wall and contains a very small genome and, accordingly, a reduced set of regulatory proteins. It is assumed that one of the regulatory mechanisms in mycoplasmas may be the dynamics of the spatial organization of the chromosome. M. gallisepticum has only two known nucleoid-associated (NAP) histone-like proteins (Hup_1 and Hup_2). To search for new potential NAP that may play a role in the infection process, we isolated nucleoid fractions from M. gallisepticum cells before and after infection of HD3 chicken erythroblast cell line and performed a comparative proteomic analysis of these fractions. We identified several potential NAP that included the components of the terminal organelle and adhesion, VlhA antigen, NADH oxidase, and PykF pyruvate kinase.
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