Gregory Matthew A, Till Rob, Smith Margaret C M
Institute of Genetics, University of Nottingham, Queens Medical Centre, Nottingham NG7 2UH, United Kingdom.
J Bacteriol. 2003 Sep;185(17):5320-3. doi: 10.1128/JB.185.17.5320-5323.2003.
Despite extensive similarities between the genomes of the Streptomyces temperate phages phiC31 and phiBT1, the attP-int loci are poorly conserved. Here we demonstrate that phiBT1 integrates into a different attachment site than phiC31. phiBT1 attB lies within SCO4848 encoding a 79-amino-acid putative integral membrane protein. Integration vectors based on phiBT1 integrase were shown to have a broad host range and are fully compatible with those based on the phiC31 attP-int locus.
尽管链霉菌温和噬菌体phiC31和phiBT1的基因组之间存在广泛的相似性,但attP-int位点的保守性较差。在这里,我们证明phiBT1整合到与phiC31不同的附着位点。phiBT1 attB位于编码一种79个氨基酸的假定整合膜蛋白的SCO4848内。基于phiBT1整合酶的整合载体显示具有广泛的宿主范围,并且与基于phiC31 attP-int位点的载体完全兼容。