dna, dna_sm and dna_rm which one should I use to form a blast database?

[arkilis]

I saw there are a couple of files on the ensembl ftp website:

ftp://ftp.ensembl.org/pub/release-76...lanoleuca/dna/

* 'dna' - unmasked genomic DNA sequences.

* 'dna_rm' - masked genomic DNA. Interspersed repeats and low
complexity regions are detected with the RepeatMasker tool and masked
by replacing repeats with 'N's.

* 'dna_sm' - soft-masked genomic DNA. All repeats and low complexity regions
have been replaced with lowercased versions of their nucleic base

Still don't know which file should I downloaded to format a blast database? Thanks!

[GenoMax]

What are you going to do using the blast database you create?

[arkilis]

What are you going to do using the blast database you create?

Just normal blast, might want to know which species belongs to for those samples I already sequenced.

Thanks for your reply.

[GenoMax]

Get the unmasked DNA for a normal blast.