Sandbox Reserved 717: Difference between revisions

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[[Image:T4_schema.jpg|thumb|right|Schematic representation of bacteriophage T4]]

Bacteriophage T4 belongs to the Myoviridae family and the Caudovirales order because of its complex tail structure with a high number of proteins involved. It infects Escherichia coli bacteria. It is consisting of three parts : a DNA-containing head, a doubles-tubed tail with a contractile outer tail-sheath and a baseplate with short ~~and long~~ tail fibers.

Bacteriophage T4 belongs to the Myoviridae family and the Caudovirales order because of its complex tail structure with a high number of proteins involved. It infects Escherichia coli bacteria. It is consisting of three parts : a DNA-containing head, a doubles-tubed tail with a contractile outer tail-sheath and a baseplate with long and short tail fibers.

Each bacteriophage T4 baseplate is composed of at least 16 different gene products, also called gp which are oligomeric proteins. These gene products can be divided in to groups: the six long and the six short tail fibers (on the schematic representation, they are not all shown). They form a multiprotein machine which plays an important role at the first stage of a phage infection. It is essential for the host cell recognition, the attachment of the bacteriophage and the sheath contraction allowing viral DNA ejection.

Each bacteriophage T4 '''baseplate''' is composed of at least 16 different gene products, also called gp which are oligomeric proteins. These gene products can be divided in to groups: the six long and the '''six short tail fibers''' (on the schematic representation, they are not all shown). They form a multiprotein machine which plays an important role at the first stage of a phage infection. It is essential for the host cell recognition, the attachment of the bacteriophage and the sheath contraction allowing viral DNA ejection.

== '''Adsorption and penetration phases''' ==

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 [[Image:T4_schema.jpg|thumb|right|Schematic representation of bacteriophage T4]]
-Bacteriophage T4 belongs to the Myoviridae family and the Caudovirales order because of its complex tail structure with a high number of proteins involved. It infects Escherichia coli bacteria. It is consisting of three parts : a DNA-containing head, a doubles-tubed tail with a contractile outer tail-sheath and a baseplate with short and long tail fibers.
+Bacteriophage T4 belongs to the Myoviridae family and the Caudovirales order because of its complex tail structure with a high number of proteins involved. It infects Escherichia coli bacteria. It is consisting of three parts : a DNA-containing head, a doubles-tubed tail with a contractile outer tail-sheath and a baseplate with long and short tail fibers.
-Each bacteriophage T4 baseplate is composed of at least 16 different gene products, also called gp which are oligomeric proteins. These gene products can be divided in to groups: the six long and the six short tail fibers (on the schematic representation, they are not all shown). They form a multiprotein machine which plays an important role at the first stage of a phage infection. It is essential for the host cell recognition, the attachment of the bacteriophage and the sheath contraction allowing viral DNA ejection.
+Each bacteriophage T4 '''baseplate''' is composed of at least 16 different gene products, also called gp which are oligomeric proteins. These gene products can be divided in to groups: the six long and the '''six short tail fibers''' (on the schematic representation, they are not all shown). They form a multiprotein machine which plays an important role at the first stage of a phage infection. It is essential for the host cell recognition, the attachment of the bacteriophage and the sheath contraction allowing viral DNA ejection.
 == '''Adsorption and penetration phases''' ==