K-mer coverage of metgenomic data, what is the uper limit of K?

K-mer coverage of metgenomic data, what is the uper limit of K?

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It is my understanding that k-mer coverage with regards to sequencing data is simply the distribution of k-mers across the raw sequencing reads and have nothing to do with coverage of the resulting assembly?

To that end, what is the normal upper limit of a k-mer coverage search and how to you pick what k-mer to search at? I assume the physical limit is simply k-mer = read length?

Lastly, what are the major benefits of doing this? I can understand why one would look at coverage of the actual assembly to identify any low coverage regions but what does a distribution of k-mers tell us about the raw data?


metagenomic


coverage

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