RSAT - Help about purge-sequence

Program developed by Stefan Kurtz (
Web interface by


Mask redundant fragments in a sequence. This perl script is no more than a wrapper to facilitate this specific usage for two programs developed by Stefan Kurtz : mkvtree and vmatch.

When a fragment is duplicated, the first ocurrence is conserved and the second masked (or optionally deleted).

By default, the program also searches similarities between the direct and reverse complement strand.

This web interface is no more than a wrapper around two programs (mkvtree and vmatch) developed by Stefan Kurtz.