[Neuraminidase activity of nonpathogenic Neisseria].
It was revealed earlier by the authors that N. meningitidis of the principal serological groups A, B, and C possessed neuraminidase activity. In the present work it was shown that this sign was genus-specific, and that this property was also possessed by the representatives of nonpathogenic neisseria habituating in the nasopharynx, However, the enzymatic activity in nonpathogenic neisseria was less pronounced than in meningococci, and required more prolonged contact of the enzymatic-substrate mixture for its detection. There was revealed a direct relationship between the neuraminidase activity and the growth phase of the microorganisms, whose maximum coincided with the exponential phase of bacterial growth, this apparently being associated with the extracellular character of its origin.
[Neuraminidase activity of nonpathogenic Neisseria]. It was revealed earlier by the authors that N. meningitidis of the principal serological groups A, B, and C possessed neuraminidase activity. In the present work it was shown that this sign was genus-specific, and that this property was also possessed by the representatives of nonpathogenic neisseria habituating in the nasopharynx, However, the enzymatic activity in nonpathogenic neisseria was less pronounced than in meningococci, and required more prolonged contact of the enzymatic-substrate mixture for its detection. There was revealed a direct relationship between the neuraminidase activity and the growth phase of the microorganisms, whose maximum coincided with the exponential phase of bacterial growth, this apparently being associated with the extracellular character of its origin.