Abstract
Porphyromonas gingivalis, an etiological agent of chronic periodontitis, is an asaccharolytic anaerobic gram-negative coccobacillus. Genetic approaches greatly facilitate research on organisms at the molecular level. Although with some challenges, the use of genetic techniques (such as constructing knockout mutants) in P. gingivalis are feasible. In this chapter, we describe detailed methods for site-directed and random mutagenesis through the construction of fimbriae-related gene mutants of P. gingivalis.
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