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Topic: Siphoviridae

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In the News (Wed 21 Aug 19)

  IngentaConnect Similarly Organized Lysogeny Modules in Temperate Siphoviridae fr...   (Site not responding. Last check: 2007-10-22)
Temperate Siphoviridae from an evolutionarily related branch of low GC content gram-positive bacteria share a common genetic organization of lysogeny-related genes and the predicted proteins are linked by many sequence similarities.
In all known temperate Siphoviridae from low GC content gram-positive bacteria the lysogeny module is flanked by the lysis module and the DNA replication module.
With a larger database of phage sequences it might be possible to establish a genomics-based phage taxonomy and to retrace the evolutionary history of selected phage modules or individual phage genes.
www.ingentaconnect.com /content/ap/vy/1999/00000263/00000002/art09959   (296 words)

 IngentaConnect The Structural Gene Module in Streptococcus thermophilus Bacterio...   (Site not responding. Last check: 2007-10-22)
The structural gene cluster and the lysis module from lytic group II Streptococcus thermophilus bacteriophage phiSfi11 was compared to the corresponding region from other Siphoviridae.
Sequence similarity was only found between phiSfi11 and Siphoviridae from gram-positive hosts and correlated with the evolutionary distance between the bacterial hosts.
Our data are compatible with the hypothesis that the structural gene operon from Siphoviridae of the low G+C group of gram-positive bacteria is derived from a common ancestor.
www.ingentaconnect.com /content/ap/vy/1998/00000246/00000001/art09190   (334 words)

 Structural characterization of the terminases from some siphoviridae - En el viento
Research project at the YSBL, York, GB Structural characterization of the terminases from some siphoviridae
They belong to the siphoviridae family, characterised by having a long, non-contractile tail.
Structural characterization of the terminases from some siphoviridae
www.pangea.org /mol/spip.php?article3   (313 words)

 The Dilemma of Phage Taxonomy Illustrated by Comparative Genomics of Sfi21-Like Siphoviridae in Lactic Acid Bacteria -- ...   (Site not responding. Last check: 2007-10-22)
The ORFs are color coded according to their predicted function deduced from a set of criteria consisting of either their database matches, the synteny argument with phage lambda (18), protein analysis (38), transcription analysis (55), or a mixture of these criteria.
Committee on Taxonomy in Virology (ICTV)-accepted genus in Siphoviridae
The virulent phages are given with the late structural genes at the right and the early nonstructural genes at the left.
jb.asm.org /cgi/content/full/184/21/6026   (6259 words)

 Water Science and Technology 35:11-12 (1997) 129-132 - J. Lasobras et al. - Relationship between the morphology of ...
fragilis in both wastewater and samples with persistent pollution were in all cases members of the Siphoviridae group with flexible tails.
coli CN13, 91% of the phages belonged to the Myoviridae family and a 6% to the Siphoviridae family.
In contrast, in persistent pollution samples, an increase of Siphoviridae phages was observed (up to 26.4%).
www.iwaponline.com /wst/03511/wst035110129.htm   (227 words)

 Bacteriophage Diversity in the North Sea -- Wichels et al. 64 (11): 4128 -- Applied and Environmental Microbiology   (Site not responding. Last check: 2007-10-22)
(D) Siphoviridae, morphotype 2: knoblike appendages on the head and tail with a hook at the end (phage 11 68c).
Similarly, the seven bacteriophages belonging to the Siphoviridae were subdivided into three different morphotypes.
Almost all of the phages isolated near Helgoland had morphological structures that have been described previously (16).
aem.asm.org /cgi/content/full/64/11/4128   (3529 words)

 Marine Microbiology Group - Research - Viromics
Lytic phages infective for marine Synechococcus are easily isolated from seawater, and many of these have been shown to be Myoviridae although some Siphoviridae and Podoviridae have also been isolated.
We have been interested in lysogeny in Synechococcus because of the observation of seasonal variation in natural populations of Synechococcus in Tampa Bay (McDaniel et al, 2002).
In addition to the common lytic cyanophages we have demonstrated lysogeny based on prophage induction in natural populations of Synechococcus in both Tampa Bay and the Gulf of Mexico (McDaniel et al, 2002, McDaniel and Paul, 2005).
www.marine.usf.edu /microbiology/viromics-lysogeny-synechococcus.shtml   (740 words)

 Inter Research » DAO » v29 » n2 » p145-149   (Site not responding. Last check: 2007-10-22)
A virulent bacteriophage, designated PLgY, was detected from cultures of Lactococcus garvieae (formerly Enterococcus seriolicida) isolated from diseased yellowtail Seriola quinqueradiata.
The phage had an isometric head measuring 50 to 60 nm, a thin flexible tail of 7 × 140-180 nm, and the genome consisting of double stranded DNA, indicating that PLgY is a member of the family Siphoviridae.
This site will look much better in a browser that supports web standards, but is accessible to any browser and/or Internet device.
www.int-res.com /abstracts/dao/v29/n2/p145-149   (243 words)

 Prophage Genomics -- Canchaya et al. 67 (2): 238 -- Microbiology and Molecular Biology Reviews   (Site not responding. Last check: 2007-10-22)
Alignment of the gene maps from bacteriophages belonging to a postulated lambda-supergroup of Siphoviridae.
Siphoviridae were revealed by the dot plot: prophages phiMu50B-phi11
The first group is represented by lambda-like Siphoviridae.
mmbr.asm.org /cgi/content/full/67/2/238   (8716 words)

 ASM Division M: Bacteriophage Lambda
Another scheme of classification denotes all phages in the set including lambda that can recombine with one another to yield infectious progeny as "lambdoid phages" (3).
The phages classified this way are all dsDNA phages but not all are Siphoviridae.
As far as is known, all lambdoid phages are of temperate phage lineage, though some of the known examples are defective for lysogeny.
www.asm.org /division/m/fax/LamFax.html   (785 words)

 78F-8 Characterization of Leuconostoc fallax bacteriophages isolated from industrial sauerkraut fermentation   (Site not responding. Last check: 2007-10-22)
Morphologically, three phages with isometric heads and long noncontractile tails were assigned to the Siphoviridae family.
The major capsid proteins detected by electrophoresis were distinct in each family, with either 50, 33 and 24 kDa proteins or 30 and 25 kDa proteins for Siphoviridae phages, and 63 and 53 kDa proteins for Myoviridae phages.
RFLP analysis of Myoviridae phage R03 showed that its DNA was over 70 kb in length.
ift.confex.com /ift/2000/techprogram/paper_4178.htm   (314 words)

 Differential Effect of Tetrazolium Dyes upon Bacteriophage Plaque Assay Titers -- Hurst et al. 60 (9): 3462 -- Applied ...   (Site not responding. Last check: 2007-10-22)
Podoviridae (P22), and Siphoviridae (Denver, T1, and VD13).
Each of the members of the Podoviridae and Siphoviridae families
Podoviridae or Siphoviridae plaque assay titers when members
aem.asm.org /cgi/content/abstract/60/9/3462   (216 words)

 Comparative Genomics of Streptococcus thermophilus Phage Species Supports a Modular Evolution Theory -- Lucchini et al. ...
We propose to renounce the attribution of Siphoviridae
Two groups of bacteriophages infecting Streptococcus thermophilus can be distinguished on the basis of mode of packaging and genetic determinants for major structural proteins.
The structural gene module in Streptococcus thermophilus bacteriophage phi Sfi11 shows a hierarchy of relatedness to Siphoviridae from a wide range of bacterial hosts.
jvi.asm.org /cgi/content/full/73/10/8647   (5271 words)

 Sequence analysis of the lactococcal bacteriophage bIL170: insights into structural proteins and HNH endonucleases in ...   (Site not responding. Last check: 2007-10-22)
supergroup of Siphoviridae, to which the lactococcal phages
Brussow, H. and Desiere, F. Comparative phage genomics and the evolution of Siphoviridae: insights from dairy phages.
Lucchini, S., Desiere, F. and Brussow, H. The structural gene module in Streptococcus thermophilus bacteriophage phi Sfi11 shows a hierarchy of relatedness to Siphoviridae from a wide range of bacterial hosts.
mic.sgmjournals.org /cgi/content/full/148/4/985   (8161 words)

 Identification of an Inducible Bacteriophage in a Virulent Strain of Streptococcus suis Serotype 2 -- Harel et al. 71 ...   (Site not responding. Last check: 2007-10-22)
The phage, named Ss1, has a long noncontractile tail
of approximately 150 nm and is therefore a member of the Siphoviridae
Phage Ss1 has a small isometric nucleocapsid approximately
iai.asm.org /cgi/content/full/71/10/6104   (2563 words)

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