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  • kalani
    Junior Member
    • May 2021
    • 1

    New to MALT

    Hey there!

    I'm new to using MALT and I'm confused about the mapping files. I think I want to use accession to taxonomy (-a2taxonomy) but I don't know where I should get that mapping file or how I know if it's compatible with my version of the database I'm using (for example NCBI's nt).

    I’ve found megan-nucl-Jan2021.db.zip at:

    as well as nucl_gb.accession2taxid.gz at:
    ftp://ftp.ncbi.nlm.nih.gov/pub/taxon...cession2taxid/
    However all the examples of malt-build I’ve seen have a .bin extension for the mapping file, so I’m not sure if these would work.

    I also noticed that the MALT manual says "The options -tre and -map are used to access the NCBI taxonomy, which is needed to perform a taxonomic analysis of the reads as they are aligned." in reference to the -tre $MALT/data/ncbi.tre.gz -map$MALT/data/ncbi.tre.gz options in the example, what are these files and where can I get them?

    Thanks in advance for any help!

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