须癣毛癣菌中的脲酶活性。
Urease activity in Trichophyton mentagrophytes.
作者信息
Sanyal A K, Banerjee A B
出版信息
Folia Microbiol (Praha). 1983;28(2):82-6. doi: 10.1007/BF02877361.
PMID:6852689
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.
摘要
在皮肤癣菌须癣毛癣菌生长的指数生长期早期，可检测到脲酶活性。脲酶的比活性随培养时间而降低。当外源尿素浓度高于2 mM时，脲酶的形成受到抑制。最适pH值为7 - 7.5，米氏常数为14 mM。在须癣毛癣菌的无细胞培养液中未检测到脲酶活性。在用或不用尿素培养的红色毛癣菌菌株中，均未检测到细胞内或细胞外脲酶活性。
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