Peña C E, Stoner J E, Hatfull G F
Department of Biological Sciences, University of Pittsburgh, Pennsylvania 15260, USA.
J Bacteriol. 1996 Sep;178(18):5533-6. doi: 10.1128/jb.178.18.5533-5536.1996.
Mycobacteriophage L5 integrates into the genome of Mycobacterium smegmatis via site-specific recombination between the phage attP site and the bacterial attB site. These two sites have a 43-bp common core sequence within which strand exchange occurs and which overlaps a tRNAGly gene at attB. We show here that a 29-bp segment of DNA is necessary and sufficient for attB function and identify the positions of strand exchange.
分枝杆菌噬菌体L5通过噬菌体附着点P位点与细菌附着点B位点之间的位点特异性重组整合到耻垢分枝杆菌的基因组中。这两个位点有一个43碱基对的共同核心序列,链交换发生在该序列内,并且该序列在附着点B处与一个甘氨酰tRNA基因重叠。我们在此表明,一段29碱基对的DNA片段对于附着点B的功能是必需且足够的,并确定了链交换的位置。