Abstract:
:Exfoliative toxin A (ETA)-coding temperate bacteriophages are leading contributors to the toxic phenotype of impetigo strains of Staphylococcus aureus. Two distinct eta gene-positive bacteriophages isolated from S. aureus strains which recently caused massive outbreaks of pemphigus neonatorum in Czech maternity hospitals were characterized. The phages, designated ϕB166 and ϕB236, were able to transfer the eta gene into a prophageless S. aureus strain which afterwards converted into an ETA producer. Complete phage genome sequences were determined, and a comparative analysis of five designed genomic regions revealed major variances between them. They differed in the genome size, number of open reading frames, genome architecture, and virion protein patterns. Their high mutual sequence similarity was detected only in the terminal regions of the genome. When compared with the so far described eta phage genomes, noticeable differences were found. Thus, both phages represent two new lineages of as yet not characterized bacteriophages of the Siphoviridae family having impact on pathogenicity of impetigo strains of S. aureus.
journal_name
Virus Genesjournal_title
Virus genesauthors
Botka T,Růžičková V,Konečná H,Pantůček R,Rychlík I,Zdráhal Z,Petráš P,Doškař Jdoi
10.1007/s11262-015-1223-8subject
Has Abstractpub_date
2015-08-01 00:00:00pages
122-31issue
1eissn
0920-8569issn
1572-994Xjournal_volume
51pub_type
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