Stewart G C, Rosenblum E D
J Bacteriol. 1980 Dec;144(3):1200-2. doi: 10.1128/jb.144.3.1200-1202.1980.
The cotransformation frequency of mecC5 with pur-102 using Staphylococcus aureus C5 deoxyribonucleic acid was found to be approximately 45%. However, in cotransduction studies, there was a 15% cotransduction of purine prototrophy and methicillin sensitivity but, in the reciprocal cross, no purine-prototrophic plus Mecr cotransductants were obtained (frequency less than 0.06%). The data support the hypothesis that the mec determinant resides on an inserted deoxyribonucleic acid sequence in S. aureus and that there is no allelic equivalent in sensitive cells.
利用金黄色葡萄球菌C5的脱氧核糖核酸,发现mecC5与pur-102的共转化频率约为45%。然而,在共转导研究中,嘌呤原养型和甲氧西林敏感性的共转导率为15%,但在反向杂交中,未获得嘌呤原养型加Mecr共转导子(频率小于0.06%)。这些数据支持以下假设:mec决定簇位于金黄色葡萄球菌中插入的脱氧核糖核酸序列上,且敏感细胞中不存在等位基因等价物。