噬菌体T4幽灵的溶菌酶活性

B. Szewczyk, R. Skórko
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引用次数: 7

摘要

发现T4噬菌体鬼怪具有溶菌酶(黏肽n -乙酰脲基水解酶,EC 3.2.1)。17)活动。这种酶可能负责从外部进行裂解,在感染的高多重性中观察到,这一过程与e基因产物的存在无关,e基因产物也是一种溶菌酶。鬼溶菌酶和e溶菌酶对最大催化活性的要求和底物特异性在一定程度上存在差异。在Triton X-100的作用下,鬼溶菌酶从相颗粒中释放出来。
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Lysozyme activity of bacteriophage T4 ghosts

Bacteriophage T4 ghosts were found to possess lysozyme (mucopeptide N-acetylmuramoylhydrolase, EC 3.2.1. 17) activity. This enzyme is probably responsible for the lysis from without, observed at high multiplicity of infection, a process independent of the presence of the e gene product which is also a lysozyme. The ghost lysozyme and e lysozyme differed with respect to their requirements for maximal catalytic activity and to some extent in substrate specificity. The ghost lysozyme was released from phase particle by the action of Triton X-100.

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