LAHEDES: the LAGLIDADG homing endonuclease database and engineering server

Area of Science:

• Molecular Biology
• Biotechnology
• Bioinformatics

Background:

• LAGLIDADG homing endonucleases (LHEs), or meganucleases, are enzymes used for gene targeting.
• Modifying LHE DNA specificity is crucial for targeting specific genomic sequences.
• A growing number of characterized LHEs facilitate gene targeting selection.

Purpose of the Study:

• To introduce LAHEDES, a comprehensive database and engineering server for LHEs.
• To provide a tool for identifying potential genomic targets for various LHEs.
• To assist researchers in engineering LHEs for specific DNA sequences.

Main Methods:

• Development of an online archive of LHEs with validated DNA cleavage specificities and binding interactions.
• Implementation of a webserver for identifying DNA sequences targetable by LHEs.
• Inclusion of four scoring algorithms and user-defined LHE scaffold selection.
• Provision of information on amino acid clusters for LHE engineering.

Main Results:

• LAHEDES offers an accessible platform for LHE information and target identification.
• The server facilitates the selection of appropriate LHEs for gene targeting.
• It guides engineering efforts by highlighting key amino acid regions.

Conclusions:

• LAHEDES enhances the application of LHEs in gene targeting by providing a centralized resource.
• The tool simplifies the process of identifying and engineering LHEs for specific genomic sites.
• LAHEDES is freely available at http://homingendonuclease.net to support research.