Function ID: phi:0000174 Function name: capsid tail Function description: Component of the tailed phages i.e. the Caudovirales, which have a double stranded DNA genome. The tail can be short (Podoviridae), long and non-contractile (Siphoviridae) or long and contractile (Myoviridae). The tail is the channel through which the phage genome is injected into the host bacterial cell.