Publication details
Genome analysis of polyvalent staphylococcal bacteriophage 812
| Authors | |
|---|---|
| Year of publication | 2002 |
| Type | Article in Periodical |
| Magazine / Source | Scripta medica (Brno) |
| MU Faculty or unit | |
| Citation | |
| Field | Genetics and molecular biology |
| Keywords | Bacteriophage; Staphylococcus; DNA; Bacteriophage Therapy; Endolysin Gene; Genome Mapping |
| Description | The phage 812 is a polyvalent virulent bacteriophage belonging to the family Myoviridae. It shows strong lytic activity on a broad host range of Staphylococcus aureus subsp.aureus strains as well as on some other staphylococcal species.The phage 812 is closely related to staphylococcal phages U16,SK311 and SK131 classified with the phage species Twort. The object of our study is the analysis of genome regions exhibiting chromosome rearrangements (insertions,deletions and inversions)in the host-range mutants of the phage 812.This analysis should contribute to the explanation of molecular mechanisms leading to the host range changes.Part of this study is focused on identification and characterization of genes and sequences of the phage 812 presumably relating to the host range changes. We determined the nucleotide sequence of a 913 bp insertion identified in the restriction fragment PstI-O of the host-range mutant 812b. The putative gene coding for the major capsid protein of the phage 812 has been found.This protein shows 65 %identity with the major capsid protein of the phage A511 growing on Listeria monocytogenes strains. Hybridization probe prepared from the intron sequences of phage Twort does not hybridize with the phage 812 DNA,nor with that of its host-range mutants,which indicates absence of the introns in these phages. |
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