Infection stage of virus

T2 bacteriophage attaches to the cell wall of E. coli bacteria. The virus attaches to the receptive spot of the bacterium by tactile fibers. Then the tangential fibers contract. The base plate of the virus comes into contact with the cell wall of the bacteria. An enzyme called lysozyme is released from the tail of the virus. Lysozyme dissolves mucopeptides in the bacterial cell wall. As a result, a fine pore or duct is formed. This process is called drilling. Virus DNA enters the bacterial cell through pores or tubules. But the capsid coat remains outside.

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