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感染藤黄微球菌的噬菌体的DNA碱基组成、细胞内DNA的性质、形态及分类

DNA base composition, nature of intracellular DNA, morphology, and classification of bacteriophages infecting Micrococcus luteus.

作者信息

Compton S W, Mayo J A, Ehrlich M, Ackermann H W, Tremblay L, Cords C E, Scaletti J V

出版信息

Can J Microbiol. 1979 Sep;25(9):1027-35. doi: 10.1139/m79-158.

DOI:10.1139/m79-158
PMID:540260
Abstract

Ten bacteriophages infecting Micrococcus luteus have been characterized. All phages contain double-stranded DNA, of 64.3--73.5 mol% guanine plus cytosine (GC). The DNA of phage N7 has the highest GC content reported for any bacterial virus. No unusual bases have been found. The intracellular replicating DNAs of six phages are covalently closed circular molecules. All 10 phages have isometric, probably icosahedral, heads and long, flexible, noncontractile tails and can be sorted into two morphological groups based on size and presence or absence of a collar. Host-range studies indicate six host-range groups.

摘要

已对十种感染藤黄微球菌的噬菌体进行了表征。所有噬菌体均含有双链DNA,其中鸟嘌呤加胞嘧啶(GC)的含量为64.3% - 73.5摩尔%。噬菌体N7的DNA的GC含量是所有细菌病毒中报道的最高值。未发现异常碱基。六种噬菌体的细胞内复制DNA是共价闭合环状分子。所有十种噬菌体都有等轴状、可能为二十面体的头部以及长而灵活的非收缩性尾部,并且可以根据大小和是否有颈环分为两个形态学组。宿主范围研究表明有六个宿主范围组。

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