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Updated: Aug 8, 2026
07:06
Principles of Site-Specific Recombinase (SSR) Technology
Published on: May 29, 2008
Mechanisms of site-specific recombination
Nigel D F Grindley1, Katrine L Whiteson, Phoebe A Rice
1Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, Connecticut 06520-8114, USA. nigel.grindley@yale.edu
Annual Review of Biochemistry
|June 8, 2006
Summary
Site-specific recombination, essential for DNA integration, excision, and inversion, involves two main enzyme families: tyrosine and serine recombinases. These families utilize distinct mechanisms for DNA manipulation, with recent studies clarifying their processes.
Area of Science:
- Molecular Biology
- Genetics
- Biochemistry
Background:
- Site-specific recombination facilitates DNA segment manipulation without DNA synthesis.
- Recombinases, crucial for this process, are categorized into tyrosine and serine families.
- These families differ in their DNA breakage and reunion mechanisms.
Purpose of the Study:
- To elucidate the distinct mechanisms of tyrosine and serine recombinases.
- To understand the regulatory strategies employed in natural site-specific recombination systems.
- To highlight recent structural and biochemical insights into these recombinases.
Main Methods:
- Review of structural and biochemical studies.
- Comparative analysis of tyrosine and serine recombinase mechanisms.
- Examination of regulatory mechanisms in natural recombination systems.
Main Results:
- Tyrosine recombinases form Holliday junctions via paired single-strand breaks.
- Serine recombinases perform a full DNA cut before strand exchange and religation.
- Natural systems exhibit regulatory control favoring specific recombination outcomes like deletion or inversion.
Conclusions:
- Site-specific recombination is a fundamental biological process mediated by two distinct recombinase families.
- Understanding these mechanisms and their regulation is key to harnessing their potential.
- Recent research provides detailed insights into the molecular workings of these enzymes.
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