Helicase

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A helicase is an [[Enzyme|enzyme]] which aids the unwinding of the [[Double_helix|double helix]] during [[DNA replication|DNA replication]], thus exposing the bases so they can be copied. In order to drive the unwinding of the double strand, a helicase hydrolyzes [[ATP|ATP]]. This is due to the fact that splitting the strands requires breaking of the [[Hydrogen bonds|hydrogen bonds]] between the DNA bases.  
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A helicase is an [[Enzyme|enzyme]] which aids the unwinding of the [[Double helix|double helix]] during [[DNA replication|DNA replication]], thus exposing the bases so they can be copied. In order to drive the unwinding of the double strand, a helicase hydrolyzes [[ATP|ATP]]. This is due to the fact that splitting the strands requires breaking of the [[Hydrogen bonds|hydrogen bonds]] between the DNA bases.  
  
There are usually several different types of helicases which are specialised for different roles such as [[DNA repair|repair]], [[DNA replication|replication]], transcription termination, RNA splicing, and RNA editing&nbsp;and [[DNA recombination|recombination]]&nbsp;<ref>Genetics-Analysis of genes and genomes p.204</ref>&nbsp;<ref>Hartl D. and Jones E. (2009) Genetics: Analysis of Genes and Genomes, 7th edition, Sudbury: Jones and Bartlett Publishers.</ref><ref>Voet, D. and Voet, J.G. (2011) Biochemistry, 4th Edition: 1184, New Jersey: John and Sons, Inc</ref>. There are [[DNA|DNA]] and [[RNA|RNA]] helicases.  
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There are usually several different types of helicases which are specialised for different roles such as [[DNA repair|repair]], [[DNA replication|replication]], transcription termination, RNA splicing, and RNA editing&nbsp;and [[DNA recombination|recombination]]<ref>Genetics-Analysis of genes and genomes p.204</ref>&nbsp;<ref>Hartl D. and Jones E. (2009) Genetics: Analysis of Genes and Genomes, 7th edition, Sudbury: Jones and Bartlett Publishers.</ref><ref>Voet, D. and Voet, J.G. (2011) Biochemistry, 4th Edition: 1184, New Jersey: John and Sons, Inc</ref>. There are [[DNA|DNA]] and [[RNA|RNA]] helicases.  
  
 
=== References<br>  ===
 
=== References<br>  ===
  
 
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Revision as of 13:42, 16 November 2018

A helicase is an enzyme which aids the unwinding of the double helix during DNA replication, thus exposing the bases so they can be copied. In order to drive the unwinding of the double strand, a helicase hydrolyzes ATP. This is due to the fact that splitting the strands requires breaking of the hydrogen bonds between the DNA bases.

There are usually several different types of helicases which are specialised for different roles such as repair, replication, transcription termination, RNA splicing, and RNA editing and recombination[1] [2][3]. There are DNA and RNA helicases.

References

  1. Genetics-Analysis of genes and genomes p.204
  2. Hartl D. and Jones E. (2009) Genetics: Analysis of Genes and Genomes, 7th edition, Sudbury: Jones and Bartlett Publishers.
  3. Voet, D. and Voet, J.G. (2011) Biochemistry, 4th Edition: 1184, New Jersey: John and Sons, Inc
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