[iten]

What proportion of bases in your query were ambiguous? If it was a fairly low percentage (~10-20%?), I think you could probably get away with using LASTZ, treating all ambiguous bases as completely ambiguous (--ambiguous=iupac), then write a short script to go through the alignments afterward and filter out ones that don't have a reference base that matches the IUPAC character in the query.

But that's the lazy approach :) Good article.

[keithwhor]

Thanks. :)

Sometimes reinventing a wheel (or at the very least a spoke or two) can be fun and provide some neat results.