BugSeq 16S: NanoCLUST with improved consensus sequence classification
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NanoCLUST has enabled species-level taxonomic classification from noisy nanopore 16S sequencing data for BugSeq’s users and the broader nanopore sequencing community. We noticed a high misclassification rate of NanoCLUST-derived consensus 16S sequences due to its use of BLAST top hit taxonomy assignment. We replaced the consensus sequence classifier of NanoCLUST with QIIME2’s VSEARCH-based classifier to enable greater accuracy.
We use mock microbial community and clinical 16S sequencing data to show that this replacement results in significantly improved nanopore 16S accuracy (over 5% recall and 19% precision), and make this new tool (BugSeq 16S) freely available for academic use at BugSeq.com/free.