How to find a query that you can find with FASTA but not with BLAST and vice versa?

问题

I need to find a sequence or sequences that should give results (hits) in Fasta but not in Blast, or vice versa.

And I am kinda lost.

What should I look for while searching this sequence(s)?

回答1:

When you say find a sequence by BLAST or FASTA I assume you mean find a hit in the database?

I think FASTA might be better at finding alignments between dissimilar sequences than BLAST but BLAST is better at aligning similar sequences.

来源：https://stackoverflow.com/questions/26491285/how-to-find-a-query-that-you-can-find-with-fasta-but-not-with-blast-and-vice-ver