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rdf:type |
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lifeskim:mentions |
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pubmed:issue |
24
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pubmed:dateCreated |
2005-12-2
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pubmed:databankReference |
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pubmed:abstractText |
Bacteriophage K1F specifically infects Escherichia coli strains that produce the K1 polysaccharide capsule. Like several other K1 capsule-specific phages, K1F encodes an endo-neuraminidase (endosialidase) that is part of the tail structure which allows the phage to recognize and degrade the polysaccharide capsule. The complete nucleotide sequence of the K1F genome reveals that it is closely related to bacteriophage T7 in both genome organization and sequence similarity. The most striking difference between the two phages is that K1F encodes the endosialidase in the analogous position to the T7 tail fiber gene. This is in contrast with bacteriophage K1-5, another K1-specific phage, which encodes a very similar endosialidase which is part of a tail gene "module" at the end of the phage genome. It appears that diverse phages have acquired endosialidase genes by horizontal gene transfer and that these genes or gene products have adapted to different genome and virion architectures.
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pubmed:commentsCorrections |
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http://linkedlifedata.com/resource/pubmed/commentcorrection/16321955-9135118
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pubmed:language |
eng
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pubmed:journal |
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pubmed:citationSubset |
IM
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pubmed:chemical |
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pubmed:status |
MEDLINE
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pubmed:month |
Dec
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pubmed:issn |
0021-9193
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pubmed:author |
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pubmed:issnType |
Print
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pubmed:volume |
187
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
8499-503
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pubmed:dateRevised |
2009-11-18
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pubmed:meshHeading |
pubmed-meshheading:16321955-Bacteriophage T7,
pubmed-meshheading:16321955-Base Sequence,
pubmed-meshheading:16321955-Coliphages,
pubmed-meshheading:16321955-Escherichia coli,
pubmed-meshheading:16321955-Evolution, Molecular,
pubmed-meshheading:16321955-Gene Transfer, Horizontal,
pubmed-meshheading:16321955-Genome, Viral,
pubmed-meshheading:16321955-Molecular Sequence Data,
pubmed-meshheading:16321955-Neuraminidase,
pubmed-meshheading:16321955-Podoviridae,
pubmed-meshheading:16321955-Sequence Analysis, DNA,
pubmed-meshheading:16321955-Sequence Homology,
pubmed-meshheading:16321955-Synteny,
pubmed-meshheading:16321955-Virus Replication
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pubmed:year |
2005
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pubmed:articleTitle |
The genome of bacteriophage K1F, a T7-like phage that has acquired the ability to replicate on K1 strains of Escherichia coli.
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pubmed:affiliation |
National Institutes of Mental Health, National Institutes of Health, Building 49, Room B1B20, 9000 Rockville Pike, Bethesda, MD 20892, USA. dscholl@usa.net
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pubmed:publicationType |
Journal Article,
Research Support, N.I.H., Intramural
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