Tuesday, April 14, 2009

Base-excision repairs:

Base-excisions and nucleotide-excisions (check
out the next bullet) work in much the same way. Base-excisions occur
when an unwanted base (such as uracil; see the section “Spontaneous
chemical changes” earlier in this chapter) is found. Specialized enzymes
recognize the damage, and the base is snipped out and replaced with
the correct one.

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