Pariza M W, Iandolo J J
Appl Microbiol. 1974 Feb;27(2):317-23. doi: 10.1128/am.27.2.317-323.1974.
Genetic relatedness among Staphylococcus aureus typing bacteriophages 80, 47, 81, 71, 77, and 187 was investigated by using base ratio determinations and deoxyribonucleic acid (DNA)-DNA hybridization. Guanine/cytosine (G/C) content, as determined by thermal denaturation and chromatographic analysis of the purines released by acid hydrolysis of the DNA, was between 31 and 36%. No pattern correlating G/C content with serological or lytic group was discernible. DNA-DNA hybridization studies indicated high degrees of homology (43% or more) among the genomes of phages in the same serological group. Less homology (29% or less) was observed between the genomes of phages belonging to different serological groups. These findings implied a positive correlation between serological and genetic relatedness.
通过碱基比例测定和脱氧核糖核酸(DNA)-DNA杂交,研究了金黄色葡萄球菌分型噬菌体80、47、81、71、77和187之间的遗传相关性。通过热变性和对DNA酸水解释放的嘌呤进行色谱分析测定的鸟嘌呤/胞嘧啶(G/C)含量在31%至36%之间。未发现G/C含量与血清学或裂解组之间存在相关模式。DNA-DNA杂交研究表明,同一血清学组的噬菌体基因组之间具有高度同源性(43%或更高)。属于不同血清学组的噬菌体基因组之间观察到的同源性较低(29%或更低)。这些发现暗示血清学与遗传相关性之间存在正相关。