Hello, Clint.
The contents of the Restriction Enzymes track are not in a table that can be downloaded, but are rather calculated on the fly. There is still a way to obtain the information you are looking for though, which is addressed in the following previously-answered mailing list questions:
https://groups.google.com/a/soe.ucsc.edu/d/msg/genome/eIdmqUljb3Q/rwjDlTIWZjoJ
https://groups.google.com/a/soe.ucsc.edu/d/msg/genome/eIdmqUljb3Q/rwjDlTIWZjoJ
https://groups.google.com/a/soe.ucsc.edu/d/msg/genome/-fL_E7ZKbAU/gLhlHM48m0kJ
Note that the links to our old mailing list archives do not point properly to their new Google equivalents, so I have provided the appropriate Google links for you. In the future, if you search the Google group and find one of those old links, the old links do at least contain the month and year of the original post which makes it a bit easier to find the right post in the Google group.
Please contact us again at gen...@soe.ucsc.edu if you have any further questions. All messages sent to that address are archived on a publicly-accessible Google Groups forum. If your question includes sensitive data, you may send it instead to genom...@soe.ucsc.edu.
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Steve Heitner
UCSC Genome Bioinformatics Group
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