title: DNA analysis of temperate bacteriophage Aa(phi)23 isolated from actinobacillus actinomycetemcomitans.
abstract: The DNA of the temperate bacteriophage Aaphi23 isolated from the oral bacterium Actinobacillus actinomycetemcomitans was examined structurally both in the phage head and in the prophage. The DNA in phage particles comprises 44 kb linear molecules with a terminal redundancy of 1.6 kb, which represent circular permutations. Thus, DNA is packaged into phage heads by the headful mechanism. The Aaphi23 prophage is integrated into the host chromosome.
authors.affiliation: Institute of Preventive Dentistry and Oral Microbiology, Dental Center, University of Basel, Switzerland.
authors.forename: K
authors.initials: K
authors.lastname: Willi
authors.forename: J
authors.initials: J
authors.lastname: Meyer
mesh_terms: D016976:Aggregatibacter actinomycetemcomitans / Q000821:virology*; D001435:Bacteriophages / Q000235:genetics*; D004279:DNA, Viral / Q000032:analysis* / Q000648:ultrastructure; D016521:Electrophoresis, Gel, Pulsed-Field; D008854:Microscopy, Electron
chemical_list: D004279:DNA, Viral