M. Matsuura et al., A GENE ESSENTIAL FOR THE SITE-SPECIFIC EXCISION OF ACTINOPHAGE R4 PROPHAGE GENOME FROM THE CHROMOSOME OF A LYSOGEN, Journal of General and Applied Microbiology, 41(1), 1995, pp. 53-61
An open reading frame (ORF469) was found near the attP core site of th
e actinophage R4 which encoded a 469-amino acid polypeptide. A gene di
sruption experiment suggested that the ORF469 gene was essential for s
ite-specific excision of the prophage R4 genome from its host chromoso
me. The predicted amino acid sequence of the protein showed a similari
ty to a resolvase of Tn2501 and SpoIVCA of Bacillus subtilis.