Tuesday, April 14, 2009

Alkylating agents

Like base analogs, alkylating agents induce mispairings between bases.
Alkylating agents, such as the chemical weapon mustard gas, add chemical
groups to the existing bases that make up DNA. As a consequence, the
altered bases pair with the wrong complement, thus introducing the mutation.
Surprisingly, alkylating agents are often used to fight cancer as part
of chemotherapy; therapeutic versions of alkylating agents may inhibit
cancer growth by interfering with the replication of DNA in rapidly dividing
cancer cells.

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