title: Urease activity in Trichophyton mentagrophytes.
abstract: Urease activity was detected in the dermatophyte Trichophyton mentagrophytes cells at early exponential phase of growth. Specific activity of urease decreased with culture age. At exogenous urea concentrations above 2 mM formation of urease was inhibited. The pH optimum lay at 7-7.5, the Km being 14 mM. No urease activity could be detected in cell-free culture fluid of T. mentagrophytes. No endo- or exocellular urease activity could be detected in a T. rubrum strain grown with or without urea.
mesh_terms: D000641:Ammonia / Q000378:metabolism; D006863:Hydrogen-Ion Concentration; D014249:Trichophyton / Q000201:enzymology* / Q000378:metabolism; D014508:Urea / Q000378:metabolism; D014510:Urease / Q000378:metabolism*
chemical_list: D000641:Ammonia; D014508:Urea; D014510:Urease