REBASE - restriction enzymes and methylases.

REBASE is a comprehensive database of information about restriction enzymes and their associated methylases, including their recognition and cleavage sites and their commercial availability. Also included is a listing of homing endonucleases. Information from REBASE is available via monthly electronic mailings as well as via anonymous ftp and through the World Wide Web. The REBASE web site, http://www. neb.com/rebase , is where we maintain a web page for every enzyme, reference and supplier. Additionally, there is a search facility, help and NEWS pages, and a complete description of our various services. Specialized files are available that can be used directly by many software packages.