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噬菌体 phi 2 对枯草芽孢杆菌 168 芽孢形成过程的流产感染

Abortive infection of sporulating Bacillus subtilis 168 by phi 2 bacteriophage.

作者信息

Ito J, Spizizen J

出版信息

J Virol. 1971 Apr;7(4):515-23. doi: 10.1128/JVI.7.4.515-523.1971.

Abstract

Bacteriophage phi2 is unable to replicate in Bacillus subtilis 168. Although some phage deoxyribonucleic acid (DNA) synthesis can occur, the DNA made is not biologically active and sedimentation analysis reveals that it is smaller in size than that of mature DNA or DNA isolated from phi2-infected permissive hosts. Messenger ribonucleic acid hybridizable with phi2 DNA is also synthesized in phi2-infected cells of 168. Mutants of 168 which are permissive hosts for phi2 have been isolated. These mutants are defective in sporulation and possess the phenotype of "early sporulation mutants." The majority map in two locations, one near the lys locus opposite the trp locus (spoA locus) and the other tightly linked to a phe locus.

摘要

噬菌体phi2无法在枯草芽孢杆菌168中复制。虽然可以发生一些噬菌体脱氧核糖核酸(DNA)合成,但所产生的DNA没有生物活性,沉降分析表明其大小比成熟DNA或从phi2感染的允许宿主中分离的DNA小。与phi2 DNA可杂交的信使核糖核酸也在168的phi2感染细胞中合成。已经分离出作为phi2允许宿主的168突变体。这些突变体在孢子形成方面存在缺陷,并具有“早期孢子形成突变体”的表型。大多数突变体定位在两个位置,一个靠近与trp基因座相对的lys基因座(spoA基因座),另一个与phe基因座紧密连锁。

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