title: Whole genome sequencing of a novel temperate bacteriophage of P. aeruginosa: evidence of tRNA gene mediating integration of the phage genome into the host bacterial chromosome.
abstract: Whole genome sequencing of a novel Pseudomonas aeruginosa temperate bacteriophage PaP3 has been completed. The genome contains 45 503 bp with GC content of 52.1%, without more than 100 bp sequence hitting homologue in all sequenced phage genomes. A total of 256 open reading frames (ORFs) are found in the genome, and 71 ORFs are predicated as coding sequence (CDS). All 71 CDS are divided into the two opposite direction groups, and both groups meet at the bidirectional terminator site locating the near middle of the genome. The genome is dsDNA with 5'-protruded cohesive ends and cohesive sequence is 'GCCGGCCCCTTTCCGCGTTA' (20 mer). There are four tRNA genes (tRNA(Asn), tRNA(Asp), tRNA(Tyr) and tRNA(Pro)) clustering at the 5'-terminal of the genome. Analysis of integration site of PaP3 in the host bacterial genome confirmed that the core sequence of (GGTCGTAGGTTCGAATCCTAC-21mer) locates at tRNA(Pro) gene within the attP region and at tRNA(Lys) gene in the attB region. The results indicated that 3'-end of tRNA(Pro) gene of the PaP3 genome is involved in the integration reaction and 5'-end of tRNA(Lys) gene of host bacteria genome is hot spot of the integration.
authors.affiliation: Department of Microbiology, The Third Military Medical University, Chongqing 400038, China.
authors.forename: Yinling
authors.initials: Y
authors.lastname: Tan
authors.forename: Kebin
authors.initials: K
authors.lastname: Zhang
authors.forename: Xiancai
authors.initials: X
authors.lastname: Rao
authors.forename: Xiaolin
authors.initials: X
authors.lastname: Jin
authors.forename: Jianjun
authors.initials: J
authors.lastname: Huang
authors.forename: Junmin
authors.initials: J
authors.lastname: Zhu
authors.forename: Zhijin
authors.initials: Z
authors.lastname: Chen
authors.forename: Xiaomei
authors.initials: X
authors.lastname: Hu
authors.forename: Xiaodong
authors.initials: X
authors.lastname: Shen
authors.forename: Lin
authors.initials: L
authors.lastname: Wang
authors.forename: Fuquan
authors.initials: F
authors.lastname: Hu
mesh_terms: D002876:Chromosomes, Bacterial / Q000502:physiology*; D004269:DNA, Bacterial; D016679:Genome, Viral / Q000502:physiology*; D017105:Pseudomonas Phages / Q000235:genetics*; D011550:Pseudomonas aeruginosa / Q000235:genetics*; D012343:RNA, Transfer / Q000502:physiology*; D017422:Sequence Analysis, DNA; D016662:Virus Integration / Q000502:physiology*
chemical_list: D004269:DNA, Bacterial; D012343:RNA, Transfer