Escherichia virus T5
Bacteriophage T5 is a tailed virus within the family Demerecviridae. This bacteriophage specifically infects E. coli bacterial cells and follows a lytic life cycle.
Structure and genome
The T5 virion includes a 90 nanometer icosahedral capsid and a 160 nanometer-long flexible, non-contractile tail.The capsid contains the phage's 121,750 base pair, double-stranded DNA genome which is predicted to encode about 162 proteins. The genome has a unique sequence of 111,613 bp with two identical large direct terminal repetitions of 10,139 bp. When the genome sequence was published in 2005, only 61 of the 168 encoded proteins had been assigned functions based on homology to known sequences. More than half of all genes were predicted ORFs lacking similarity to any known proteins.