Palindromes

A palindrome is a sequence of letters and/or words, that reads the same forwards and backwards.

"able was I ere I saw elba" is a palindrome.

Palindromes also occur in DNA.

There are two types.

1. Palindromes that occur on opposite strands of the same section of DNA helix.

5' GGCC 3'
3' CCGG 5'

This type of palindrome serves as the target for most restriction enzymes.

The graphic shows the palindromic sequences "seen" by five restriction enzymes (named in blue) commonly used in recombinant DNA work. [Discussion]


2. Inverted Repeats

In these cases, two different segments of the double helix read the same but in opposite directions.

5' AGAACAnnnTGTTCT 3'
3' TCTTGTnnnACAAGA 5'

Inverted repeats are commonly found in

Welcome&Next Search

27 February 2011