How to extract reads that match k-mer profiles from a collection of sequences?
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5.5 years ago
O.rka ▴ 710

Let's say you had 10 draft-genome assemblies from different sources with 100 contigs all together from a particular genus.

Are there any tools that allow you to use this "database" of assemblies to then grab any reads that have even a remotely similar k-mer usage to the "database"?

I know about kneaddata but that is mapping to a very specific reference sequence, I'm looking for a way to extract reads that have similar k-mer usage.

Is there a tool that I can use to do this?

sequencing • 2.0k views
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You can use mash (https://genomebiology.biomedcentral.com/articles/10.1186/s13059-016-0997-x ), sourmash ( https://sourmash.readthedocs.io/en/latest/ ) or bbsketch.sh from BBMap suite (https://sourceforge.net/projects/bbmap/ ) can help you with the classification but I am not sure if they have functionality to extract those reads.

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5.5 years ago
GenoMax 141k

cookiecutter (https://github.com/ad3002/Cookiecutter ) seems to do what you need. You will need to test and ascertain.

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Is that more for extract adapters or can it be extended to entire genome k-mer profiles?

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