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Inverted repeat

 
Sci-Tech Dictionary: inverted repeats
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(in′vərd·əd ri′pēts)

(genetics) Two copies of the same nucleotide sequence oriented in opposite directions on the same molecule. Also known as IR sequences.

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Veterinary Dictionary: inverted repeat
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Blocks of nucleotide sequence that are present in more than one copy, but in a reverse order, such as ABCDE and E,D,C,B,A,; they may be terminal or internal. Called also indirect repeat. See also palindrome.

Wikipedia: Inverted repeat
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An inverted repeat (or IR) is a sequence of nucleotides that is the reversed complement of another sequence further downstream.[1]

For example, 5'---GACTGC....GCAGTC---3'. When no nucleotides intervene between the sequence and its downstream complement, it is called a palindrome. Inverted repeats define the boundaries in transposons. Inverted repeats also indicate regions capable of self-complementary base pairing (regions within a single sequence which can base pair with each other).

Contents

Examples

  • original: 5'-GACTGC-3'
  • complement: 3'-CTGACG-5' (base pairing)
  • reverse complement: 5'-GCAGTC-3'

See also

References

  1. ^ Ussery, David W.; Wassenaar, Trudy; Borini, Stefano (2008-12-22). "Word Frequencies, Repeats, and Repeat-related Structures in Bacterial Genomes". Computing for Comparative Microbial Genomics: Bioinformatics for Microbiologists. Computational Biology. 8 (1 ed.). Springer. p. 133–144. ISBN 978-1-84800-254-8. 

External links

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v • d • e
Genetics: repeated sequence
Tandem repeats
Interspersed repeats
LINE1, LINE2
DNA transposon
MER1, MER2, Mariners
Genomic island

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Sci-Tech Dictionary. McGraw-Hill Dictionary of Scientific and Technical Terms. Copyright © 2003, 1994, 1989, 1984, 1978, 1976, 1974 by McGraw-Hill Companies, Inc. All rights reserved.  Read more
Veterinary Dictionary. Saunders Comprehensive Veterinary Dictionary 3rd Edition. Copyright © 2007 by D.C. Blood, V.P. Studdert and C.C. Gay, Elsevier. All rights reserved.  Read more
Wikipedia. This article is licensed under the Creative Commons Attribution/Share-Alike License. It uses material from the Wikipedia article "Inverted repeat".  Read more