Replication fork

From The School of Biomedical Sciences Wiki
Revision as of 23:48, 3 December 2015 by 150082158 (Talk | contribs)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search

The Replication Fork is the site from which DNA is synthesised. As the new strands are formed from the parental strand as it unwinds, it forms a fork shape [1]. At a replication fork, both strands are synthesised in a 5' to 3' direction. The leading strand is synthesised continuously, whereas the lagging strand is synthesised in short pieces called Okazaki fragments[2].

The replication fork is asymmetrical because the DNA is replicated by Semiconservative_replication using DNA_polymerase. At the replication fork, Y shaped structure, DNA of both new daughter strands are formed. This is made possible by a multienzyme complex which contains DNA polymerase. [3]

Reference

  1. Berg J., Tymoczko J and Stryer L. (2012) Biochemistry, 7th edition, New York: WH Freeman.fckLRPage 853
  2. Stryer, Biochemistry 5th Edition, 760
  3. Bruce Alberts et al. Molecular Biology of the Cell, 5th edition, 2008, Garland Science, New York. Chapter 5 : DNA replication, Repair, and Recombination, page 266




Personal tools
Namespaces
Variants
Actions
Navigation
Toolbox