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Filtering blastx by taxonomy ID

If I am locally running a blastx against the nr database I downloaded, is it possible to specifiy only hits to mammals (taxid = 40674), for example? My blast run is taking quite a long time and I am hoping that it might speed it up if I filter for the taxonomy I am interested in. Or is this something which needs to be done when I am formatting the database?

Sorry if this question is a bit obvious, but I struggle with the wording on the NCBI website. Thanks.

blast genome software error
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written by 4galaxy77 4galaxy77

I don't think it is possible to limit BLAST database output to a specific taxonomy ID. Maybe you can look into DIAMOND instead of running BLASTX as it's much faster than BLASTX.

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written by Sej Modha Sej Modha

If you use outfmt 6 or 7 you could try including the staxid column and filter by that.

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written by cschu181 cschu181

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