Odegrip Richard, Nilsson Anders S, Haggård-Ljungquist Elisabeth
Department of Genetics, Microbiology and Toxicology, Stockholm University, S-106 91 Stockholm, Sweden.
J Bacteriol. 2006 Feb;188(4):1643-7. doi: 10.1128/JB.188.4.1643-1647.2006.
The P2-like coliphages are highly similar; the structural genes show at least 96% identity. However, at two loci they have genes believed to be horizontally transferred. We show that the genetic content at the second loci, the TO region, contains six completely different sequences with high AT contents and with different open reading frames. The product of one of them exhibits reverse transcriptase activity and blocks infection of phage T5.
P2样大肠杆菌噬菌体高度相似;其结构基因显示至少96%的同一性。然而,在两个位点它们有被认为是水平转移的基因。我们表明,第二个位点即TO区域的遗传内容包含六个完全不同的序列,具有高AT含量和不同的开放阅读框。其中一个的产物表现出逆转录酶活性并阻断噬菌体T5的感染。