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Inverted repeat
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===Example of an inverted repeat=== [[File:Inverted-Repeat.gif|thumb|500px|left|The 5 base-pair sequence on the left is "repeated" and "inverted" to form sequence on the right.]] Beginning with this initial sequence:<br /> {{color|blue|5'-TTACG-3'}} The complement created by base pairing is:<br /> {{color|green|3'-AATGC-5'}} The reverse complement is:<br /> {{color|green|5'-CGTAA-3'}} And, the inverted repeat sequence is:<br /> {{color|blue|5'---TTACGnnnnnn}}{{color|green|CGTAA---3'}} "nnnnnn" represents any number of intervening nucleotides. {{Clear}} <!-- ===Direct repeat vs. inverted repeat=== A well-defined direct repeat is that which has a duplicated sequence as follows:<ref name=Bissler>{{cite journal|last=Bissler|first=JJ|title=DNA inverted repeats and human disease.|journal=Frontiers in Bioscience|date=Mar 27, 1998|volume=3|pages=d408-18|pmid=9516381|doi=10.2741/a284}}</ref> :::{{color|blue|5´ '''ACATACA'''ACATACA 3´}} :::{{color|green|3´ '''TGTATGT'''TGTATGT 5´}} The nucleotide sequence written in bold characters signifies the repeated sequence.<ref name=Bissler>{{cite journal}}</ref> Linguistically, a typical direct repeat is comparable to saying "bye-bye".<ref name=Bissler>{{cite journal}}</ref> There is similarity between direct and inverted repeat, or else a palindrome, with the exception of the second half of the inverted repeat positioned in the complementary strand as follows:<ref name=Bissler>{{cite journal}}</ref> :::{{color|blue|5´ '''ACATACG'''CGTATGT 3´}} :::{{color|green|3´ TGTATGC'''GCATACA''' 5´}} The last repeats suggest that palindromes can be related linguistically to a string of characters that reads the same in both directions, such as "level". In all, repeated sequence without the [[complementarity (molecular biology)|reverse complement]] and without inversion, is a [[direct repeat]].<ref name=Ussery2008 /> Based on the same initial sequence discussed above in the section titled "understanding inverted repeats", a direct repeat would be: {{color|blue|5' TTACGnnnnnnTTACG 3'}} -->
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