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Primase
(Redirected from DNA primase)
DNA primase is form of RNA polymerase and a product of the dnaG gene . Primase binds to the DNA helicase forming a complex called the primosome. Primase is activated by DNA helicase where it then synthesizes a short RNA primer approximately 11 ±1 nucleotides long, to which new nucleotides can be added by DNA polymerase. Primase is of key importance in DNA replication because no known DNA polymerases can initiate the synthesis of a DNA strand.
A primer is a short RNA segment that is complementary to a DNA segment, and is necessary to begin DNA replication.
Types
Last updated: 05-21-2005 21:19:26
10-26-2009 08:16:03
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The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details