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In a 1945 study by Demerec and Fano, [4] T7 was used to describe one of the seven phage types (T1 to T7) that grow lytically on Escherichia coli. [5] Although all seven phages were numbered arbitrarily, phages with odd numbers, or T-odd phages, were later discovered to share morphological and biochemical features that distinguish them from T-even phages. [6]
T7 phage group was renamed to T7-like phages in the sixth report in 1995. In 1998, the whole family was moved into the newly created order Caudovirales , and the genus was renamed again in the seventh report in 1999 to T7-like viruses . 2009 saw the genus moved into the newly created subfamily Autographivirinae , and it was renamed again in ...
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Once this has occurred, the prohead undergoes maturation by cleavage of capsid subunits to form an icosahedral phage head with 5-fold symmetry. After the head maturation, the tail is joined in one of two ways: Either the tail is constructed separately, and joined with the connector, or the tail is constructed directly onto the phage head.
Podoviridae was a family of bacteriophage in the order Caudovirales often associated with T-7 like phages. [1] The family and order Caudovirales have now been abolished, with the term podovirus now used to refer to the morphology of viruses in this former family. [2]