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Erschienen in: Archives of Virology 9/2013

01.09.2013 | Original Article

The genome of VP3, a T7-like phage used for the typing of Vibrio cholerae

verfasst von: Wei Li, Jingyun Zhang, Zehua Chen, Qian Zhang, Li Zhang, Pengcheng Du, Chen Chen, Biao Kan

Erschienen in: Archives of Virology | Ausgabe 9/2013

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Abstract

The bacteriophage VP3 is used in a phage-biotyping scheme as one of the typing phages of Vibrio cholerae O1 biotype El Tor strains. Here, we have sequenced and analyzed its genome. The genome consists of 39,481 bp with an overall G + C content of 42.6 %. Fifty-two open reading frames (ORFs) were predicted. Within the genome, 17 highly conserved phage promoters and 6 rho-independent terminators were predicted. When assessed with Rluc as a reporter gene, 12 of 16 cloned VP3 promoters showed activity in the host strain V. cholerae biotype El Tor. Based on the temporal expression pattern detected using reverse transcription PCR (RT-PCR), VP3 ORFs can be classed into four groups, arranged according to their order in the VP3 genome. Terminators T1 and T6 are presumed to work efficiently. Sequencing of the typing phage VP3 of V. cholerae reveals its evolutionary subdivisions from the members of T7-like phages of Escherichia coli. Knowledge of VP3 expands the known host range of T7-like phages and will promote understanding the different infection mechanisms used by members of this genus.
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Metadaten
Titel
The genome of VP3, a T7-like phage used for the typing of Vibrio cholerae
verfasst von
Wei Li
Jingyun Zhang
Zehua Chen
Qian Zhang
Li Zhang
Pengcheng Du
Chen Chen
Biao Kan
Publikationsdatum
01.09.2013
Verlag
Springer Vienna
Erschienen in
Archives of Virology / Ausgabe 9/2013
Print ISSN: 0304-8608
Elektronische ISSN: 1432-8798
DOI
https://doi.org/10.1007/s00705-013-1676-9

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Seit 2022 gehört die medbee GmbH zum Springer Medizin Verlag

Notfall-TEP der Hüfte ist auch bei 90-Jährigen machbar

26.04.2024 Hüft-TEP Nachrichten

Ob bei einer Notfalloperation nach Schenkelhalsfraktur eine Hemiarthroplastik oder eine totale Endoprothese (TEP) eingebaut wird, sollte nicht allein vom Alter der Patientinnen und Patienten abhängen. Auch über 90-Jährige können von der TEP profitieren.

Niedriger diastolischer Blutdruck erhöht Risiko für schwere kardiovaskuläre Komplikationen

25.04.2024 Hypotonie Nachrichten

Wenn unter einer medikamentösen Hochdrucktherapie der diastolische Blutdruck in den Keller geht, steigt das Risiko für schwere kardiovaskuläre Ereignisse: Darauf deutet eine Sekundäranalyse der SPRINT-Studie hin.

Bei schweren Reaktionen auf Insektenstiche empfiehlt sich eine spezifische Immuntherapie

Insektenstiche sind bei Erwachsenen die häufigsten Auslöser einer Anaphylaxie. Einen wirksamen Schutz vor schweren anaphylaktischen Reaktionen bietet die allergenspezifische Immuntherapie. Jedoch kommt sie noch viel zu selten zum Einsatz.

Therapiestart mit Blutdrucksenkern erhöht Frakturrisiko

25.04.2024 Hypertonie Nachrichten

Beginnen ältere Männer im Pflegeheim eine Antihypertensiva-Therapie, dann ist die Frakturrate in den folgenden 30 Tagen mehr als verdoppelt. Besonders häufig stürzen Demenzkranke und Männer, die erstmals Blutdrucksenker nehmen. Dafür spricht eine Analyse unter US-Veteranen.

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