Comparative analysis of the genomes of the temperate bacteriophages φ11, φ12 and φ13 of Staphylococcus aureus 8325

被引:125
作者
Iandolo, JJ
Worrell, V
Groicher, KH
Qian, YD
Tian, RY
Kenton, S
Dorman, A
Ji, HG
Lin, SP
Loh, P
Qi, SL
Zhu, H
Roe, BA
机构
[1] Univ Oklahoma, Hlth Sci Ctr, Dept Microbiol & Immunol, Oklahoma City, OK 73190 USA
[2] Univ Oklahoma, Dept Chem & Biochem, Norman, OK 73019 USA
关键词
DNA; genome annotation; sequencing;
D O I
10.1016/S0378-1119(02)00481-X
中图分类号
Q3 [遗传学];
学科分类号
071007 ; 090102 ;
摘要
The genomes of the three temperate bacteriophages contained in the chromosome of Staphylococcus aureus 8325 have been extracted from the sequence database and analyzed. phi 11, phi 12 and phi 13 are members of the same lytic group but different serogroups and consequently co-habitate the same host cell. Their genomes are approximately 42 kb to 45kb and contain about 90 ORFs of at least 50 codons. Of these, about 50 have similarities to known genes or to genes of other staphylococcal phages. Each of the phages clusters within a homology group that share large regions of sequence identity while intergroup homology is comparatively low. The arrangement of genes on the chromosomes of the three phages is similar and consistent with current modular theory of phage gene organization. The replicated genomes appear to be packaged by different mechanisms. Phage phi11 and phi 12 have been found to contain sequences consistent with pac-site phages while phi13 has sequences consistent with cos-site phages, The attB site for phi11 is located in an intergenic region of the S. aureus chromosome while 12 and phi13 integrate into specific genes. The phi12 att-site is within an unknown gene, but the phi13 att-site is within the beta-toxin gene. In contrast to the other two phages, phi13 also introduces the staphylokinase gene (sak) and a second gene related to expression of fib. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:109 / 118
页数:10
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