Homing endonucleases: DNA scissors on a mission
Citations Over TimeTop 10% of 2012 papers
Abstract
Buried within the genomes of many microorganisms are genetic elements that encode rare-cutting homing endonucleases that assist in the mobility of the elements that encode them, such as the self-splicing group I and II introns and in some cases inteins. There are several different families of homing endonucleases and their ability to initiate and target specific sequences for lateral transfers makes them attractive reagents for gene targeting. Homing endonucleases have been applied in promoting DNA modification or genome editing such as gene repair or "gene knockouts". This review examines the categories of homing endonucleases that have been described so far and their possible applications to biotechnology. Strategies to engineer homing endonucleases to alter target site specificities will also be addressed. Alternatives to homing endonucleases such as zinc finger nucleases, transcription activator-like effector nucleases, triplex forming oligonucleotide nucleases, and targetrons are also briefly discussed.
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